about summary refs log tree commit diff
diff options
context:
space:
mode:
authorEsteban Kuber <esteban@kuber.com.ar>2021-12-16 02:14:17 +0000
committerEsteban Kuber <esteban@kuber.com.ar>2022-03-08 00:18:24 +0000
commit2383858f34989f7c6c87da857bd038f5ce0a66b0 (patch)
treefae94544bea7a6888068b41bb51c1983aeceb813
parent02a3830f245d84672db133208c73756eb8778964 (diff)
downloadrust-2383858f34989f7c6c87da857bd038f5ce0a66b0.tar.gz
rust-2383858f34989f7c6c87da857bd038f5ce0a66b0.zip
When finding a match expr with a single arm that requires more, suggest it
Given

```rust
match Some(42) {
    Some(0) => {}
}
```

suggest

```rust
match Some(42) {
    Some(0) => {}
    None | Some(_) => todo!(),
}
```
-rw-r--r--compiler/rustc_mir_build/src/thir/pattern/check_match.rs15
-rw-r--r--src/test/ui/closures/2229_closure_analysis/match/issue-88331.stderr12
-rw-r--r--src/test/ui/closures/2229_closure_analysis/match/non-exhaustive-match.stderr5
-rw-r--r--src/test/ui/error-codes/E0004.stderr6
-rw-r--r--src/test/ui/feature-gates/feature-gate-precise_pointer_size_matching.stderr12
-rw-r--r--src/test/ui/half-open-range-patterns/half-open-range-pats-exhaustive-fail.stderr408
-rw-r--r--src/test/ui/match/match_non_exhaustive.stderr5
-rw-r--r--src/test/ui/or-patterns/exhaustiveness-non-exhaustive.stderr18
-rw-r--r--src/test/ui/or-patterns/issue-69875-should-have-been-expanded-earlier-non-exhaustive.stderr6
-rw-r--r--src/test/ui/pattern/usefulness/doc-hidden-non-exhaustive.stderr6
-rw-r--r--src/test/ui/pattern/usefulness/empty-match.exhaustive_patterns.stderr48
-rw-r--r--src/test/ui/pattern/usefulness/empty-match.normal.stderr48
-rw-r--r--src/test/ui/pattern/usefulness/floats.stderr6
-rw-r--r--src/test/ui/pattern/usefulness/integer-ranges/exhaustiveness.stderr60
-rw-r--r--src/test/ui/pattern/usefulness/integer-ranges/pointer-sized-int.deny.stderr60
-rw-r--r--src/test/ui/pattern/usefulness/integer-ranges/precise_pointer_matching-message.stderr12
-rw-r--r--src/test/ui/pattern/usefulness/issue-30240.stderr6
-rw-r--r--src/test/ui/pattern/usefulness/issue-35609.stderr42
-rw-r--r--src/test/ui/pattern/usefulness/issue-3601.stderr6
-rw-r--r--src/test/ui/pattern/usefulness/issue-40221.stderr6
-rw-r--r--src/test/ui/pattern/usefulness/issue-50900.stderr6
-rw-r--r--src/test/ui/pattern/usefulness/match-byte-array-patterns-2.stderr12
-rw-r--r--src/test/ui/pattern/usefulness/match-non-exhaustive.stderr10
-rw-r--r--src/test/ui/pattern/usefulness/non-exhaustive-defined-here.stderr24
-rw-r--r--src/test/ui/pattern/usefulness/non-exhaustive-match.stderr29
-rw-r--r--src/test/ui/pattern/usefulness/non-exhaustive-pattern-witness.stderr18
-rw-r--r--src/test/ui/pattern/usefulness/slice-patterns-exhaustiveness.stderr42
-rw-r--r--src/test/ui/pattern/usefulness/stable-gated-patterns.stderr6
-rw-r--r--src/test/ui/pattern/usefulness/type_polymorphic_byte_str_literals.stderr6
-rw-r--r--src/test/ui/rfc-2005-default-binding-mode/slice.stderr6
-rw-r--r--src/test/ui/uninhabited/uninhabited-matches-feature-gated.stderr18
31 files changed, 805 insertions, 159 deletions
diff --git a/compiler/rustc_mir_build/src/thir/pattern/check_match.rs b/compiler/rustc_mir_build/src/thir/pattern/check_match.rs
index cb057e428c4..f1c2ec08c3c 100644
--- a/compiler/rustc_mir_build/src/thir/pattern/check_match.rs
+++ b/compiler/rustc_mir_build/src/thir/pattern/check_match.rs
@@ -589,6 +589,21 @@ fn non_exhaustive_match<'p, 'tcx>(
                 ),
             ));
         }
+        [only] => {
+            let pre_indentation = if let (Some(snippet), true) = (
+                sm.indentation_before(only.span),
+                sm.is_multiline(sp.shrink_to_hi().with_hi(only.span.lo())),
+            ) {
+                format!("\n{}", snippet)
+            } else {
+                " ".to_string()
+            };
+            let comma = if matches!(only.body.kind, hir::ExprKind::Block(..)) { "" } else { "," };
+            suggestion = Some((
+                only.span.shrink_to_hi(),
+                format!("{}{}{} => todo!()", comma, pre_indentation, pattern),
+            ));
+        }
         _ => {}
     }
 
diff --git a/src/test/ui/closures/2229_closure_analysis/match/issue-88331.stderr b/src/test/ui/closures/2229_closure_analysis/match/issue-88331.stderr
index feb371d4ed6..5e66d1318fb 100644
--- a/src/test/ui/closures/2229_closure_analysis/match/issue-88331.stderr
+++ b/src/test/ui/closures/2229_closure_analysis/match/issue-88331.stderr
@@ -8,7 +8,11 @@ LL |     move |i| match msg_type {
    |                    ^^^^^^^^ patterns `Opcode(0_u8)` and `Opcode(2_u8..=u8::MAX)` not covered
    |
    = note: the matched value is of type `Opcode`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         Opcode::OP1 => unimplemented!(),
+LL ~         Opcode(0_u8) | Opcode(2_u8..=u8::MAX) => todo!(),
+   |
 
 error[E0004]: non-exhaustive patterns: `Opcode2(Opcode(0_u8))` and `Opcode2(Opcode(2_u8..=u8::MAX))` not covered
   --> $DIR/issue-88331.rs:27:20
@@ -20,7 +24,11 @@ LL |     move |i| match msg_type {
    |                    ^^^^^^^^ patterns `Opcode2(Opcode(0_u8))` and `Opcode2(Opcode(2_u8..=u8::MAX))` not covered
    |
    = note: the matched value is of type `Opcode2`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         Opcode2::OP2=> unimplemented!(),
+LL ~         Opcode2(Opcode(0_u8)) | Opcode2(Opcode(2_u8..=u8::MAX)) => todo!(),
+   |
 
 error: aborting due to 2 previous errors
 
diff --git a/src/test/ui/closures/2229_closure_analysis/match/non-exhaustive-match.stderr b/src/test/ui/closures/2229_closure_analysis/match/non-exhaustive-match.stderr
index 7d21dfe1aad..4e5fdbc3d5f 100644
--- a/src/test/ui/closures/2229_closure_analysis/match/non-exhaustive-match.stderr
+++ b/src/test/ui/closures/2229_closure_analysis/match/non-exhaustive-match.stderr
@@ -11,7 +11,10 @@ LL |     let _b = || { match l1 { L1::A => () } };
    |                         ^^ pattern `B` not covered
    |
    = note: the matched value is of type `L1`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL |     let _b = || { match l1 { L1::A => (), B => todo!() } };
+   |                                         ++++++++++++++
 
 error[E0004]: non-exhaustive patterns: type `E1` is non-empty
   --> $DIR/non-exhaustive-match.rs:37:25
diff --git a/src/test/ui/error-codes/E0004.stderr b/src/test/ui/error-codes/E0004.stderr
index 96f80aeb40c..67f6abdbc54 100644
--- a/src/test/ui/error-codes/E0004.stderr
+++ b/src/test/ui/error-codes/E0004.stderr
@@ -12,7 +12,11 @@ LL |       match x {
    |             ^ pattern `HastaLaVistaBaby` not covered
    |
    = note: the matched value is of type `Terminator`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         Terminator::TalkToMyHand => {}
+LL +         HastaLaVistaBaby => todo!()
+   |
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/feature-gates/feature-gate-precise_pointer_size_matching.stderr b/src/test/ui/feature-gates/feature-gate-precise_pointer_size_matching.stderr
index 560e8f3460b..945afffee37 100644
--- a/src/test/ui/feature-gates/feature-gate-precise_pointer_size_matching.stderr
+++ b/src/test/ui/feature-gates/feature-gate-precise_pointer_size_matching.stderr
@@ -7,7 +7,11 @@ LL |     match 0usize {
    = note: the matched value is of type `usize`
    = note: `usize` does not have a fixed maximum value, so a wildcard `_` is necessary to match exhaustively
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `usize` matching
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         0..=usize::MAX => {}
+LL +         _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/feature-gate-precise_pointer_size_matching.rs:10:11
@@ -18,7 +22,11 @@ LL |     match 0isize {
    = note: the matched value is of type `isize`
    = note: `isize` does not have a fixed maximum value, so a wildcard `_` is necessary to match exhaustively
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `isize` matching
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         isize::MIN..=isize::MAX => {}
+LL +         _ => todo!()
+   |
 
 error: aborting due to 2 previous errors
 
diff --git a/src/test/ui/half-open-range-patterns/half-open-range-pats-exhaustive-fail.stderr b/src/test/ui/half-open-range-patterns/half-open-range-pats-exhaustive-fail.stderr
index 1edd63c116f..1cf267cf99a 100644
--- a/src/test/ui/half-open-range-patterns/half-open-range-pats-exhaustive-fail.stderr
+++ b/src/test/ui/half-open-range-patterns/half-open-range-pats-exhaustive-fail.stderr
@@ -5,7 +5,11 @@ LL |     m!(0f32, f32::NEG_INFINITY..);
    |        ^^^^ pattern `_` not covered
    |
    = note: the matched value is of type `f32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         _ => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:17:8
@@ -14,7 +18,11 @@ LL |     m!(0f32, ..f32::INFINITY);
    |        ^^^^ pattern `_` not covered
    |
    = note: the matched value is of type `f32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         _ => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `'\u{10ffff}'` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:26:8
@@ -23,7 +31,11 @@ LL |     m!('a', ..core::char::MAX);
    |        ^^^ pattern `'\u{10ffff}'` not covered
    |
    = note: the matched value is of type `char`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         '\u{10ffff}' => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `'\u{10fffe}'..='\u{10ffff}'` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:27:8
@@ -32,7 +44,11 @@ LL |     m!('a', ..ALMOST_MAX);
    |        ^^^ pattern `'\u{10fffe}'..='\u{10ffff}'` not covered
    |
    = note: the matched value is of type `char`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         '\u{10fffe}'..='\u{10ffff}' => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `'\u{0}'` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:28:8
@@ -41,7 +57,11 @@ LL |     m!('a', ALMOST_MIN..);
    |        ^^^ pattern `'\u{0}'` not covered
    |
    = note: the matched value is of type `char`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         '\u{0}' => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `'\u{10ffff}'` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:29:8
@@ -50,7 +70,11 @@ LL |     m!('a', ..=ALMOST_MAX);
    |        ^^^ pattern `'\u{10ffff}'` not covered
    |
    = note: the matched value is of type `char`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         '\u{10ffff}' => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `'b'` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:30:8
@@ -59,7 +83,11 @@ LL |     m!('a', ..=VAL | VAL_2..);
    |        ^^^ pattern `'b'` not covered
    |
    = note: the matched value is of type `char`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         'b' => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `'b'` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:31:8
@@ -68,7 +96,11 @@ LL |     m!('a', ..VAL_1 | VAL_2..);
    |        ^^^ pattern `'b'` not covered
    |
    = note: the matched value is of type `char`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         'b' => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `u8::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:41:12
@@ -77,7 +109,11 @@ LL |         m!(0, ..u8::MAX);
    |            ^ pattern `u8::MAX` not covered
    |
    = note: the matched value is of type `u8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         u8::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `254_u8..=u8::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:42:12
@@ -86,7 +122,11 @@ LL |         m!(0, ..ALMOST_MAX);
    |            ^ pattern `254_u8..=u8::MAX` not covered
    |
    = note: the matched value is of type `u8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         254_u8..=u8::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `0_u8` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:43:12
@@ -95,7 +135,11 @@ LL |         m!(0, ALMOST_MIN..);
    |            ^ pattern `0_u8` not covered
    |
    = note: the matched value is of type `u8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         0_u8 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `u8::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:44:12
@@ -104,7 +148,11 @@ LL |         m!(0, ..=ALMOST_MAX);
    |            ^ pattern `u8::MAX` not covered
    |
    = note: the matched value is of type `u8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         u8::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_u8` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:45:12
@@ -113,7 +161,11 @@ LL |         m!(0, ..=VAL | VAL_2..);
    |            ^ pattern `43_u8` not covered
    |
    = note: the matched value is of type `u8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_u8 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_u8` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:46:12
@@ -122,7 +174,11 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    |            ^ pattern `43_u8` not covered
    |
    = note: the matched value is of type `u8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_u8 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `u16::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:54:12
@@ -131,7 +187,11 @@ LL |         m!(0, ..u16::MAX);
    |            ^ pattern `u16::MAX` not covered
    |
    = note: the matched value is of type `u16`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         u16::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `65534_u16..=u16::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:55:12
@@ -140,7 +200,11 @@ LL |         m!(0, ..ALMOST_MAX);
    |            ^ pattern `65534_u16..=u16::MAX` not covered
    |
    = note: the matched value is of type `u16`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         65534_u16..=u16::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `0_u16` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:56:12
@@ -149,7 +213,11 @@ LL |         m!(0, ALMOST_MIN..);
    |            ^ pattern `0_u16` not covered
    |
    = note: the matched value is of type `u16`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         0_u16 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `u16::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:57:12
@@ -158,7 +226,11 @@ LL |         m!(0, ..=ALMOST_MAX);
    |            ^ pattern `u16::MAX` not covered
    |
    = note: the matched value is of type `u16`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         u16::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_u16` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:58:12
@@ -167,7 +239,11 @@ LL |         m!(0, ..=VAL | VAL_2..);
    |            ^ pattern `43_u16` not covered
    |
    = note: the matched value is of type `u16`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_u16 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_u16` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:59:12
@@ -176,7 +252,11 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    |            ^ pattern `43_u16` not covered
    |
    = note: the matched value is of type `u16`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_u16 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `u32::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:67:12
@@ -185,7 +265,11 @@ LL |         m!(0, ..u32::MAX);
    |            ^ pattern `u32::MAX` not covered
    |
    = note: the matched value is of type `u32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         u32::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `4294967294_u32..=u32::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:68:12
@@ -194,7 +278,11 @@ LL |         m!(0, ..ALMOST_MAX);
    |            ^ pattern `4294967294_u32..=u32::MAX` not covered
    |
    = note: the matched value is of type `u32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         4294967294_u32..=u32::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `0_u32` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:69:12
@@ -203,7 +291,11 @@ LL |         m!(0, ALMOST_MIN..);
    |            ^ pattern `0_u32` not covered
    |
    = note: the matched value is of type `u32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         0_u32 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `u32::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:70:12
@@ -212,7 +304,11 @@ LL |         m!(0, ..=ALMOST_MAX);
    |            ^ pattern `u32::MAX` not covered
    |
    = note: the matched value is of type `u32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         u32::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_u32` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:71:12
@@ -221,7 +317,11 @@ LL |         m!(0, ..=VAL | VAL_2..);
    |            ^ pattern `43_u32` not covered
    |
    = note: the matched value is of type `u32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_u32 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_u32` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:72:12
@@ -230,7 +330,11 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    |            ^ pattern `43_u32` not covered
    |
    = note: the matched value is of type `u32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_u32 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `u64::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:80:12
@@ -239,7 +343,11 @@ LL |         m!(0, ..u64::MAX);
    |            ^ pattern `u64::MAX` not covered
    |
    = note: the matched value is of type `u64`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         u64::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `18446744073709551614_u64..=u64::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:81:12
@@ -248,7 +356,11 @@ LL |         m!(0, ..ALMOST_MAX);
    |            ^ pattern `18446744073709551614_u64..=u64::MAX` not covered
    |
    = note: the matched value is of type `u64`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         18446744073709551614_u64..=u64::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `0_u64` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:82:12
@@ -257,7 +369,11 @@ LL |         m!(0, ALMOST_MIN..);
    |            ^ pattern `0_u64` not covered
    |
    = note: the matched value is of type `u64`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         0_u64 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `u64::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:83:12
@@ -266,7 +382,11 @@ LL |         m!(0, ..=ALMOST_MAX);
    |            ^ pattern `u64::MAX` not covered
    |
    = note: the matched value is of type `u64`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         u64::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_u64` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:84:12
@@ -275,7 +395,11 @@ LL |         m!(0, ..=VAL | VAL_2..);
    |            ^ pattern `43_u64` not covered
    |
    = note: the matched value is of type `u64`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_u64 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_u64` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:85:12
@@ -284,7 +408,11 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    |            ^ pattern `43_u64` not covered
    |
    = note: the matched value is of type `u64`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_u64 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `u128::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:93:12
@@ -293,7 +421,11 @@ LL |         m!(0, ..u128::MAX);
    |            ^ pattern `u128::MAX` not covered
    |
    = note: the matched value is of type `u128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         u128::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `340282366920938463463374607431768211454_u128..=u128::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:94:12
@@ -302,7 +434,11 @@ LL |         m!(0, ..ALMOST_MAX);
    |            ^ pattern `340282366920938463463374607431768211454_u128..=u128::MAX` not covered
    |
    = note: the matched value is of type `u128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         340282366920938463463374607431768211454_u128..=u128::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `0_u128` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:95:12
@@ -311,7 +447,11 @@ LL |         m!(0, ALMOST_MIN..);
    |            ^ pattern `0_u128` not covered
    |
    = note: the matched value is of type `u128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         0_u128 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `u128::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:96:12
@@ -320,7 +460,11 @@ LL |         m!(0, ..=ALMOST_MAX);
    |            ^ pattern `u128::MAX` not covered
    |
    = note: the matched value is of type `u128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         u128::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_u128` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:97:12
@@ -329,7 +473,11 @@ LL |         m!(0, ..=VAL | VAL_2..);
    |            ^ pattern `43_u128` not covered
    |
    = note: the matched value is of type `u128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_u128 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_u128` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:98:12
@@ -338,7 +486,11 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    |            ^ pattern `43_u128` not covered
    |
    = note: the matched value is of type `u128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_u128 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i8::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:109:12
@@ -347,7 +499,11 @@ LL |         m!(0, ..i8::MAX);
    |            ^ pattern `i8::MAX` not covered
    |
    = note: the matched value is of type `i8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i8::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `126_i8..=i8::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:110:12
@@ -356,7 +512,11 @@ LL |         m!(0, ..ALMOST_MAX);
    |            ^ pattern `126_i8..=i8::MAX` not covered
    |
    = note: the matched value is of type `i8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         126_i8..=i8::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i8::MIN` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:111:12
@@ -365,7 +525,11 @@ LL |         m!(0, ALMOST_MIN..);
    |            ^ pattern `i8::MIN` not covered
    |
    = note: the matched value is of type `i8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i8::MIN => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i8::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:112:12
@@ -374,7 +538,11 @@ LL |         m!(0, ..=ALMOST_MAX);
    |            ^ pattern `i8::MAX` not covered
    |
    = note: the matched value is of type `i8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i8::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_i8` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:113:12
@@ -383,7 +551,11 @@ LL |         m!(0, ..=VAL | VAL_2..);
    |            ^ pattern `43_i8` not covered
    |
    = note: the matched value is of type `i8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_i8 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_i8` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:114:12
@@ -392,7 +564,11 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    |            ^ pattern `43_i8` not covered
    |
    = note: the matched value is of type `i8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_i8 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i16::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:122:12
@@ -401,7 +577,11 @@ LL |         m!(0, ..i16::MAX);
    |            ^ pattern `i16::MAX` not covered
    |
    = note: the matched value is of type `i16`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i16::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `32766_i16..=i16::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:123:12
@@ -410,7 +590,11 @@ LL |         m!(0, ..ALMOST_MAX);
    |            ^ pattern `32766_i16..=i16::MAX` not covered
    |
    = note: the matched value is of type `i16`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         32766_i16..=i16::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i16::MIN` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:124:12
@@ -419,7 +603,11 @@ LL |         m!(0, ALMOST_MIN..);
    |            ^ pattern `i16::MIN` not covered
    |
    = note: the matched value is of type `i16`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i16::MIN => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i16::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:125:12
@@ -428,7 +616,11 @@ LL |         m!(0, ..=ALMOST_MAX);
    |            ^ pattern `i16::MAX` not covered
    |
    = note: the matched value is of type `i16`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i16::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_i16` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:126:12
@@ -437,7 +629,11 @@ LL |         m!(0, ..=VAL | VAL_2..);
    |            ^ pattern `43_i16` not covered
    |
    = note: the matched value is of type `i16`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_i16 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_i16` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:127:12
@@ -446,7 +642,11 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    |            ^ pattern `43_i16` not covered
    |
    = note: the matched value is of type `i16`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_i16 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i32::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:135:12
@@ -455,7 +655,11 @@ LL |         m!(0, ..i32::MAX);
    |            ^ pattern `i32::MAX` not covered
    |
    = note: the matched value is of type `i32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i32::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `2147483646_i32..=i32::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:136:12
@@ -464,7 +668,11 @@ LL |         m!(0, ..ALMOST_MAX);
    |            ^ pattern `2147483646_i32..=i32::MAX` not covered
    |
    = note: the matched value is of type `i32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         2147483646_i32..=i32::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i32::MIN` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:137:12
@@ -473,7 +681,11 @@ LL |         m!(0, ALMOST_MIN..);
    |            ^ pattern `i32::MIN` not covered
    |
    = note: the matched value is of type `i32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i32::MIN => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i32::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:138:12
@@ -482,7 +694,11 @@ LL |         m!(0, ..=ALMOST_MAX);
    |            ^ pattern `i32::MAX` not covered
    |
    = note: the matched value is of type `i32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i32::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_i32` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:139:12
@@ -491,7 +707,11 @@ LL |         m!(0, ..=VAL | VAL_2..);
    |            ^ pattern `43_i32` not covered
    |
    = note: the matched value is of type `i32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_i32 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_i32` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:140:12
@@ -500,7 +720,11 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    |            ^ pattern `43_i32` not covered
    |
    = note: the matched value is of type `i32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_i32 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i64::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:148:12
@@ -509,7 +733,11 @@ LL |         m!(0, ..i64::MAX);
    |            ^ pattern `i64::MAX` not covered
    |
    = note: the matched value is of type `i64`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i64::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `9223372036854775806_i64..=i64::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:149:12
@@ -518,7 +746,11 @@ LL |         m!(0, ..ALMOST_MAX);
    |            ^ pattern `9223372036854775806_i64..=i64::MAX` not covered
    |
    = note: the matched value is of type `i64`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         9223372036854775806_i64..=i64::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i64::MIN` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:150:12
@@ -527,7 +759,11 @@ LL |         m!(0, ALMOST_MIN..);
    |            ^ pattern `i64::MIN` not covered
    |
    = note: the matched value is of type `i64`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i64::MIN => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i64::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:151:12
@@ -536,7 +772,11 @@ LL |         m!(0, ..=ALMOST_MAX);
    |            ^ pattern `i64::MAX` not covered
    |
    = note: the matched value is of type `i64`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i64::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_i64` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:152:12
@@ -545,7 +785,11 @@ LL |         m!(0, ..=VAL | VAL_2..);
    |            ^ pattern `43_i64` not covered
    |
    = note: the matched value is of type `i64`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_i64 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_i64` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:153:12
@@ -554,7 +798,11 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    |            ^ pattern `43_i64` not covered
    |
    = note: the matched value is of type `i64`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_i64 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i128::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:161:12
@@ -563,7 +811,11 @@ LL |         m!(0, ..i128::MAX);
    |            ^ pattern `i128::MAX` not covered
    |
    = note: the matched value is of type `i128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i128::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `170141183460469231731687303715884105726_i128..=i128::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:162:12
@@ -572,7 +824,11 @@ LL |         m!(0, ..ALMOST_MAX);
    |            ^ pattern `170141183460469231731687303715884105726_i128..=i128::MAX` not covered
    |
    = note: the matched value is of type `i128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         170141183460469231731687303715884105726_i128..=i128::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i128::MIN` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:163:12
@@ -581,7 +837,11 @@ LL |         m!(0, ALMOST_MIN..);
    |            ^ pattern `i128::MIN` not covered
    |
    = note: the matched value is of type `i128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i128::MIN => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i128::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:164:12
@@ -590,7 +850,11 @@ LL |         m!(0, ..=ALMOST_MAX);
    |            ^ pattern `i128::MAX` not covered
    |
    = note: the matched value is of type `i128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i128::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_i128` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:165:12
@@ -599,7 +863,11 @@ LL |         m!(0, ..=VAL | VAL_2..);
    |            ^ pattern `43_i128` not covered
    |
    = note: the matched value is of type `i128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_i128 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `43_i128` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:166:12
@@ -608,7 +876,11 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    |            ^ pattern `43_i128` not covered
    |
    = note: the matched value is of type `i128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         43_i128 => todo!() }
+   |
 
 error: aborting due to 68 previous errors
 
diff --git a/src/test/ui/match/match_non_exhaustive.stderr b/src/test/ui/match/match_non_exhaustive.stderr
index 3ae922fb9da..24e37d0851a 100644
--- a/src/test/ui/match/match_non_exhaustive.stderr
+++ b/src/test/ui/match/match_non_exhaustive.stderr
@@ -11,7 +11,10 @@ LL |     match l { L::A => () };
    |           ^ pattern `B` not covered
    |
    = note: the matched value is of type `L`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL |     match l { L::A => (), B => todo!() };
+   |                         ++++++++++++++
 
 error[E0004]: non-exhaustive patterns: type `E1` is non-empty
   --> $DIR/match_non_exhaustive.rs:28:11
diff --git a/src/test/ui/or-patterns/exhaustiveness-non-exhaustive.stderr b/src/test/ui/or-patterns/exhaustiveness-non-exhaustive.stderr
index 3e9180b0e6e..c99a6fd2533 100644
--- a/src/test/ui/or-patterns/exhaustiveness-non-exhaustive.stderr
+++ b/src/test/ui/or-patterns/exhaustiveness-non-exhaustive.stderr
@@ -5,7 +5,11 @@ LL |     match (0u8, 0u8) {
    |           ^^^^^^^^^^ pattern `(2_u8..=u8::MAX, _)` not covered
    |
    = note: the matched value is of type `(u8, u8)`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         (0 | 1, 2 | 3) => {}
+LL +         (2_u8..=u8::MAX, _) => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `((4_u8..=u8::MAX))` not covered
   --> $DIR/exhaustiveness-non-exhaustive.rs:9:11
@@ -14,7 +18,11 @@ LL |     match ((0u8,),) {
    |           ^^^^^^^^^ pattern `((4_u8..=u8::MAX))` not covered
    |
    = note: the matched value is of type `((u8,),)`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         ((0 | 1,) | (2 | 3,),) => {}
+LL +         ((4_u8..=u8::MAX)) => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `(Some(2_u8..=u8::MAX))` not covered
   --> $DIR/exhaustiveness-non-exhaustive.rs:13:11
@@ -23,7 +31,11 @@ LL |     match (Some(0u8),) {
    |           ^^^^^^^^^^^^ pattern `(Some(2_u8..=u8::MAX))` not covered
    |
    = note: the matched value is of type `(Option<u8>,)`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         (None | Some(0 | 1),) => {}
+LL +         (Some(2_u8..=u8::MAX)) => todo!()
+   |
 
 error: aborting due to 3 previous errors
 
diff --git a/src/test/ui/or-patterns/issue-69875-should-have-been-expanded-earlier-non-exhaustive.stderr b/src/test/ui/or-patterns/issue-69875-should-have-been-expanded-earlier-non-exhaustive.stderr
index 0d03b0e8277..c38e3088d2e 100644
--- a/src/test/ui/or-patterns/issue-69875-should-have-been-expanded-earlier-non-exhaustive.stderr
+++ b/src/test/ui/or-patterns/issue-69875-should-have-been-expanded-earlier-non-exhaustive.stderr
@@ -19,7 +19,11 @@ LL |     match 0 {
    |           ^ patterns `i32::MIN..=-1_i32` and `3_i32..=i32::MAX` not covered
    |
    = note: the matched value is of type `i32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         0 | (1 | 2) => {}
+LL +         i32::MIN..=-1_i32 | 3_i32..=i32::MAX => todo!()
+   |
 
 error: aborting due to 2 previous errors
 
diff --git a/src/test/ui/pattern/usefulness/doc-hidden-non-exhaustive.stderr b/src/test/ui/pattern/usefulness/doc-hidden-non-exhaustive.stderr
index 2acaf3401b6..a93d6bd57b6 100644
--- a/src/test/ui/pattern/usefulness/doc-hidden-non-exhaustive.stderr
+++ b/src/test/ui/pattern/usefulness/doc-hidden-non-exhaustive.stderr
@@ -33,7 +33,11 @@ LL |     B,
    |     - not covered
    |
    = note: the matched value is of type `Foo`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         Foo::A => {}
+LL +         B | _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `Some(B)` and `Some(_)` not covered
   --> $DIR/doc-hidden-non-exhaustive.rs:25:11
diff --git a/src/test/ui/pattern/usefulness/empty-match.exhaustive_patterns.stderr b/src/test/ui/pattern/usefulness/empty-match.exhaustive_patterns.stderr
index 59e126d8937..7235ef3fd90 100644
--- a/src/test/ui/pattern/usefulness/empty-match.exhaustive_patterns.stderr
+++ b/src/test/ui/pattern/usefulness/empty-match.exhaustive_patterns.stderr
@@ -155,7 +155,11 @@ LL |     match_guarded_arm!(0u8);
    |                        ^^^ pattern `_` not covered
    |
    = note: the matched value is of type `u8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `NonEmptyStruct1` not covered
   --> $DIR/empty-match.rs:88:24
@@ -167,7 +171,11 @@ LL |     match_guarded_arm!(NonEmptyStruct1);
    |                        ^^^^^^^^^^^^^^^ pattern `NonEmptyStruct1` not covered
    |
    = note: the matched value is of type `NonEmptyStruct1`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             NonEmptyStruct1 => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `NonEmptyStruct2(_)` not covered
   --> $DIR/empty-match.rs:89:24
@@ -179,7 +187,11 @@ LL |     match_guarded_arm!(NonEmptyStruct2(true));
    |                        ^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyStruct2(_)` not covered
    |
    = note: the matched value is of type `NonEmptyStruct2`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             NonEmptyStruct2(_) => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `NonEmptyUnion1 { .. }` not covered
   --> $DIR/empty-match.rs:90:24
@@ -193,7 +205,11 @@ LL |       match_guarded_arm!((NonEmptyUnion1 { foo: () }));
    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyUnion1 { .. }` not covered
    |
    = note: the matched value is of type `NonEmptyUnion1`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             NonEmptyUnion1 { .. } => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `NonEmptyUnion2 { .. }` not covered
   --> $DIR/empty-match.rs:91:24
@@ -208,7 +224,11 @@ LL |       match_guarded_arm!((NonEmptyUnion2 { foo: () }));
    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyUnion2 { .. }` not covered
    |
    = note: the matched value is of type `NonEmptyUnion2`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             NonEmptyUnion2 { .. } => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `Foo(_)` not covered
   --> $DIR/empty-match.rs:92:24
@@ -223,7 +243,11 @@ LL |       match_guarded_arm!(NonEmptyEnum1::Foo(true));
    |                          ^^^^^^^^^^^^^^^^^^^^^^^^ pattern `Foo(_)` not covered
    |
    = note: the matched value is of type `NonEmptyEnum1`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             Foo(_) => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `Foo(_)` and `Bar` not covered
   --> $DIR/empty-match.rs:93:24
@@ -240,7 +264,11 @@ LL |       match_guarded_arm!(NonEmptyEnum2::Foo(true));
    |                          ^^^^^^^^^^^^^^^^^^^^^^^^ patterns `Foo(_)` and `Bar` not covered
    |
    = note: the matched value is of type `NonEmptyEnum2`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             Foo(_) | Bar => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `V1`, `V2`, `V3` and 2 more not covered
   --> $DIR/empty-match.rs:94:24
@@ -254,7 +282,11 @@ LL |       match_guarded_arm!(NonEmptyEnum5::V1);
    |                          ^^^^^^^^^^^^^^^^^ patterns `V1`, `V2`, `V3` and 2 more not covered
    |
    = note: the matched value is of type `NonEmptyEnum5`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             _ => todo!()
+   |
 
 error: aborting due to 22 previous errors
 
diff --git a/src/test/ui/pattern/usefulness/empty-match.normal.stderr b/src/test/ui/pattern/usefulness/empty-match.normal.stderr
index 59e126d8937..7235ef3fd90 100644
--- a/src/test/ui/pattern/usefulness/empty-match.normal.stderr
+++ b/src/test/ui/pattern/usefulness/empty-match.normal.stderr
@@ -155,7 +155,11 @@ LL |     match_guarded_arm!(0u8);
    |                        ^^^ pattern `_` not covered
    |
    = note: the matched value is of type `u8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `NonEmptyStruct1` not covered
   --> $DIR/empty-match.rs:88:24
@@ -167,7 +171,11 @@ LL |     match_guarded_arm!(NonEmptyStruct1);
    |                        ^^^^^^^^^^^^^^^ pattern `NonEmptyStruct1` not covered
    |
    = note: the matched value is of type `NonEmptyStruct1`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             NonEmptyStruct1 => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `NonEmptyStruct2(_)` not covered
   --> $DIR/empty-match.rs:89:24
@@ -179,7 +187,11 @@ LL |     match_guarded_arm!(NonEmptyStruct2(true));
    |                        ^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyStruct2(_)` not covered
    |
    = note: the matched value is of type `NonEmptyStruct2`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             NonEmptyStruct2(_) => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `NonEmptyUnion1 { .. }` not covered
   --> $DIR/empty-match.rs:90:24
@@ -193,7 +205,11 @@ LL |       match_guarded_arm!((NonEmptyUnion1 { foo: () }));
    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyUnion1 { .. }` not covered
    |
    = note: the matched value is of type `NonEmptyUnion1`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             NonEmptyUnion1 { .. } => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `NonEmptyUnion2 { .. }` not covered
   --> $DIR/empty-match.rs:91:24
@@ -208,7 +224,11 @@ LL |       match_guarded_arm!((NonEmptyUnion2 { foo: () }));
    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pattern `NonEmptyUnion2 { .. }` not covered
    |
    = note: the matched value is of type `NonEmptyUnion2`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             NonEmptyUnion2 { .. } => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `Foo(_)` not covered
   --> $DIR/empty-match.rs:92:24
@@ -223,7 +243,11 @@ LL |       match_guarded_arm!(NonEmptyEnum1::Foo(true));
    |                          ^^^^^^^^^^^^^^^^^^^^^^^^ pattern `Foo(_)` not covered
    |
    = note: the matched value is of type `NonEmptyEnum1`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             Foo(_) => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `Foo(_)` and `Bar` not covered
   --> $DIR/empty-match.rs:93:24
@@ -240,7 +264,11 @@ LL |       match_guarded_arm!(NonEmptyEnum2::Foo(true));
    |                          ^^^^^^^^^^^^^^^^^^^^^^^^ patterns `Foo(_)` and `Bar` not covered
    |
    = note: the matched value is of type `NonEmptyEnum2`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             Foo(_) | Bar => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `V1`, `V2`, `V3` and 2 more not covered
   --> $DIR/empty-match.rs:94:24
@@ -254,7 +282,11 @@ LL |       match_guarded_arm!(NonEmptyEnum5::V1);
    |                          ^^^^^^^^^^^^^^^^^ patterns `V1`, `V2`, `V3` and 2 more not covered
    |
    = note: the matched value is of type `NonEmptyEnum5`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             _ if false => {}
+LL +             _ => todo!()
+   |
 
 error: aborting due to 22 previous errors
 
diff --git a/src/test/ui/pattern/usefulness/floats.stderr b/src/test/ui/pattern/usefulness/floats.stderr
index a2ffdf82205..bbeac5959f0 100644
--- a/src/test/ui/pattern/usefulness/floats.stderr
+++ b/src/test/ui/pattern/usefulness/floats.stderr
@@ -5,7 +5,11 @@ LL |     match 0.0 {
    |           ^^^ pattern `_` not covered
    |
    = note: the matched value is of type `f64`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~       0.0..=1.0 => {}
+LL +       _ => todo!()
+   |
 
 error: unreachable pattern
   --> $DIR/floats.rs:16:7
diff --git a/src/test/ui/pattern/usefulness/integer-ranges/exhaustiveness.stderr b/src/test/ui/pattern/usefulness/integer-ranges/exhaustiveness.stderr
index e1506c96f3d..8734d0f04ac 100644
--- a/src/test/ui/pattern/usefulness/integer-ranges/exhaustiveness.stderr
+++ b/src/test/ui/pattern/usefulness/integer-ranges/exhaustiveness.stderr
@@ -5,7 +5,11 @@ LL |     m!(0u8, 0..255);
    |        ^^^ pattern `u8::MAX` not covered
    |
    = note: the matched value is of type `u8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         u8::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `u8::MAX` not covered
   --> $DIR/exhaustiveness.rs:48:8
@@ -14,7 +18,11 @@ LL |     m!(0u8, 0..=254);
    |        ^^^ pattern `u8::MAX` not covered
    |
    = note: the matched value is of type `u8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         u8::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `0_u8` not covered
   --> $DIR/exhaustiveness.rs:49:8
@@ -23,7 +31,11 @@ LL |     m!(0u8, 1..=255);
    |        ^^^ pattern `0_u8` not covered
    |
    = note: the matched value is of type `u8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         0_u8 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `42_u8` not covered
   --> $DIR/exhaustiveness.rs:50:8
@@ -32,7 +44,11 @@ LL |     m!(0u8, 0..42 | 43..=255);
    |        ^^^ pattern `42_u8` not covered
    |
    = note: the matched value is of type `u8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         42_u8 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i8::MAX` not covered
   --> $DIR/exhaustiveness.rs:51:8
@@ -41,7 +57,11 @@ LL |     m!(0i8, -128..127);
    |        ^^^ pattern `i8::MAX` not covered
    |
    = note: the matched value is of type `i8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i8::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i8::MAX` not covered
   --> $DIR/exhaustiveness.rs:52:8
@@ -50,7 +70,11 @@ LL |     m!(0i8, -128..=126);
    |        ^^^ pattern `i8::MAX` not covered
    |
    = note: the matched value is of type `i8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i8::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `i8::MIN` not covered
   --> $DIR/exhaustiveness.rs:53:8
@@ -59,7 +83,11 @@ LL |     m!(0i8, -127..=127);
    |        ^^^ pattern `i8::MIN` not covered
    |
    = note: the matched value is of type `i8`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         i8::MIN => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `0_i8` not covered
   --> $DIR/exhaustiveness.rs:54:11
@@ -77,7 +105,11 @@ LL |     m!(0u128, 0..=ALMOST_MAX);
    |        ^^^^^ pattern `u128::MAX` not covered
    |
    = note: the matched value is of type `u128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         u128::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `5_u128..=u128::MAX` not covered
   --> $DIR/exhaustiveness.rs:60:8
@@ -86,7 +118,11 @@ LL |     m!(0u128, 0..=4);
    |        ^^^^^ pattern `5_u128..=u128::MAX` not covered
    |
    = note: the matched value is of type `u128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         5_u128..=u128::MAX => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `0_u128` not covered
   --> $DIR/exhaustiveness.rs:61:8
@@ -95,7 +131,11 @@ LL |     m!(0u128, 1..=u128::MAX);
    |        ^^^^^ pattern `0_u128` not covered
    |
    = note: the matched value is of type `u128`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         0_u128 => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `(126_u8..=127_u8, false)` not covered
   --> $DIR/exhaustiveness.rs:69:11
diff --git a/src/test/ui/pattern/usefulness/integer-ranges/pointer-sized-int.deny.stderr b/src/test/ui/pattern/usefulness/integer-ranges/pointer-sized-int.deny.stderr
index 0eac0d2a1b4..574c9849dbb 100644
--- a/src/test/ui/pattern/usefulness/integer-ranges/pointer-sized-int.deny.stderr
+++ b/src/test/ui/pattern/usefulness/integer-ranges/pointer-sized-int.deny.stderr
@@ -7,7 +7,11 @@ LL |     match 0usize {
    = note: the matched value is of type `usize`
    = note: `usize` does not have a fixed maximum value, so a wildcard `_` is necessary to match exhaustively
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `usize` matching
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         0 ..= usize::MAX => {}
+LL +         _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/pointer-sized-int.rs:17:11
@@ -18,7 +22,11 @@ LL |     match 0isize {
    = note: the matched value is of type `isize`
    = note: `isize` does not have a fixed maximum value, so a wildcard `_` is necessary to match exhaustively
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `isize` matching
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         isize::MIN ..= isize::MAX => {}
+LL +         _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/pointer-sized-int.rs:22:8
@@ -29,7 +37,11 @@ LL |     m!(0usize, 0..=usize::MAX);
    = note: the matched value is of type `usize`
    = note: `usize` does not have a fixed maximum value, so a wildcard `_` is necessary to match exhaustively
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `usize` matching
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         _ => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/pointer-sized-int.rs:24:8
@@ -40,7 +52,11 @@ LL |     m!(0usize, 0..5 | 5..=usize::MAX);
    = note: the matched value is of type `usize`
    = note: `usize` does not have a fixed maximum value, so a wildcard `_` is necessary to match exhaustively
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `usize` matching
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         _ => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/pointer-sized-int.rs:26:8
@@ -51,7 +67,11 @@ LL |     m!(0usize, 0..usize::MAX | usize::MAX);
    = note: the matched value is of type `usize`
    = note: `usize` does not have a fixed maximum value, so a wildcard `_` is necessary to match exhaustively
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `usize` matching
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         _ => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `(_, _)` not covered
   --> $DIR/pointer-sized-int.rs:28:8
@@ -60,7 +80,11 @@ LL |     m!((0usize, true), (0..5, true) | (5..=usize::MAX, true) | (0..=usize::
    |        ^^^^^^^^^^^^^^ pattern `(_, _)` not covered
    |
    = note: the matched value is of type `(usize, bool)`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         (_, _) => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/pointer-sized-int.rs:31:8
@@ -71,7 +95,11 @@ LL |     m!(0isize, isize::MIN..=isize::MAX);
    = note: the matched value is of type `isize`
    = note: `isize` does not have a fixed maximum value, so a wildcard `_` is necessary to match exhaustively
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `isize` matching
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         _ => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/pointer-sized-int.rs:33:8
@@ -82,7 +110,11 @@ LL |     m!(0isize, isize::MIN..5 | 5..=isize::MAX);
    = note: the matched value is of type `isize`
    = note: `isize` does not have a fixed maximum value, so a wildcard `_` is necessary to match exhaustively
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `isize` matching
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         _ => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/pointer-sized-int.rs:35:8
@@ -93,7 +125,11 @@ LL |     m!(0isize, isize::MIN..isize::MAX | isize::MAX);
    = note: the matched value is of type `isize`
    = note: `isize` does not have a fixed maximum value, so a wildcard `_` is necessary to match exhaustively
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `isize` matching
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         _ => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `(_, _)` not covered
   --> $DIR/pointer-sized-int.rs:37:8
@@ -102,7 +138,11 @@ LL |     m!((0isize, true), (isize::MIN..5, true)
    |        ^^^^^^^^^^^^^^ pattern `(_, _)` not covered
    |
    = note: the matched value is of type `(isize, bool)`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         match $s { $($t)+ => {}
+LL ~         (_, _) => todo!() }
+   |
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/pointer-sized-int.rs:41:11
diff --git a/src/test/ui/pattern/usefulness/integer-ranges/precise_pointer_matching-message.stderr b/src/test/ui/pattern/usefulness/integer-ranges/precise_pointer_matching-message.stderr
index 21fc7cd29b1..efef39c636f 100644
--- a/src/test/ui/pattern/usefulness/integer-ranges/precise_pointer_matching-message.stderr
+++ b/src/test/ui/pattern/usefulness/integer-ranges/precise_pointer_matching-message.stderr
@@ -7,7 +7,11 @@ LL |     match 0usize {
    = note: the matched value is of type `usize`
    = note: `usize` does not have a fixed maximum value, so a wildcard `_` is necessary to match exhaustively
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `usize` matching
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         0..=usize::MAX => {}
+LL +         _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/precise_pointer_matching-message.rs:11:11
@@ -18,7 +22,11 @@ LL |     match 0isize {
    = note: the matched value is of type `isize`
    = note: `isize` does not have a fixed maximum value, so a wildcard `_` is necessary to match exhaustively
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `isize` matching
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         isize::MIN..=isize::MAX => {}
+LL +         _ => todo!()
+   |
 
 error: aborting due to 2 previous errors
 
diff --git a/src/test/ui/pattern/usefulness/issue-30240.stderr b/src/test/ui/pattern/usefulness/issue-30240.stderr
index c289b68b4c3..e3c4d3ff785 100644
--- a/src/test/ui/pattern/usefulness/issue-30240.stderr
+++ b/src/test/ui/pattern/usefulness/issue-30240.stderr
@@ -5,7 +5,11 @@ LL |     match "world" {
    |           ^^^^^^^ pattern `&_` not covered
    |
    = note: the matched value is of type `&str`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         "hello" => {}
+LL +         &_ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `&_` not covered
   --> $DIR/issue-30240.rs:6:11
diff --git a/src/test/ui/pattern/usefulness/issue-35609.stderr b/src/test/ui/pattern/usefulness/issue-35609.stderr
index bea11157c63..87ae74c2040 100644
--- a/src/test/ui/pattern/usefulness/issue-35609.stderr
+++ b/src/test/ui/pattern/usefulness/issue-35609.stderr
@@ -5,7 +5,11 @@ LL |     match (A, ()) {
    |           ^^^^^^^ patterns `(B, _)`, `(C, _)`, `(D, _)` and 2 more not covered
    |
    = note: the matched value is of type `(Enum, ())`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         (A, _) => {}
+LL +         _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `(_, B)`, `(_, C)`, `(_, D)` and 2 more not covered
   --> $DIR/issue-35609.rs:14:11
@@ -14,7 +18,11 @@ LL |     match (A, A) {
    |           ^^^^^^ patterns `(_, B)`, `(_, C)`, `(_, D)` and 2 more not covered
    |
    = note: the matched value is of type `(Enum, Enum)`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         (_, A) => {}
+LL +         _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `((B, _), _)`, `((C, _), _)`, `((D, _), _)` and 2 more not covered
   --> $DIR/issue-35609.rs:18:11
@@ -23,7 +31,11 @@ LL |     match ((A, ()), ()) {
    |           ^^^^^^^^^^^^^ patterns `((B, _), _)`, `((C, _), _)`, `((D, _), _)` and 2 more not covered
    |
    = note: the matched value is of type `((Enum, ()), ())`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         ((A, ()), _) => {}
+LL +         _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `((B, _), _)`, `((C, _), _)`, `((D, _), _)` and 2 more not covered
   --> $DIR/issue-35609.rs:22:11
@@ -32,7 +44,11 @@ LL |     match ((A, ()), A) {
    |           ^^^^^^^^^^^^ patterns `((B, _), _)`, `((C, _), _)`, `((D, _), _)` and 2 more not covered
    |
    = note: the matched value is of type `((Enum, ()), Enum)`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         ((A, ()), _) => {}
+LL +         _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `((B, _), _)`, `((C, _), _)`, `((D, _), _)` and 2 more not covered
   --> $DIR/issue-35609.rs:26:11
@@ -41,7 +57,11 @@ LL |     match ((A, ()), ()) {
    |           ^^^^^^^^^^^^^ patterns `((B, _), _)`, `((C, _), _)`, `((D, _), _)` and 2 more not covered
    |
    = note: the matched value is of type `((Enum, ()), ())`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         ((A, _), _) => {}
+LL +         _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `S(B, _)`, `S(C, _)`, `S(D, _)` and 2 more not covered
   --> $DIR/issue-35609.rs:31:11
@@ -53,7 +73,11 @@ LL |     match S(A, ()) {
    |           ^^^^^^^^ patterns `S(B, _)`, `S(C, _)`, `S(D, _)` and 2 more not covered
    |
    = note: the matched value is of type `S`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         S(A, _) => {}
+LL +         _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `Sd { x: B, .. }`, `Sd { x: C, .. }`, `Sd { x: D, .. }` and 2 more not covered
   --> $DIR/issue-35609.rs:35:11
@@ -65,7 +89,11 @@ LL |     match (Sd { x: A, y: () }) {
    |           ^^^^^^^^^^^^^^^^^^^^ patterns `Sd { x: B, .. }`, `Sd { x: C, .. }`, `Sd { x: D, .. }` and 2 more not covered
    |
    = note: the matched value is of type `Sd`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         Sd { x: A, y: _ } => {}
+LL +         _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `Some(B)`, `Some(C)`, `Some(D)` and 2 more not covered
   --> $DIR/issue-35609.rs:39:11
diff --git a/src/test/ui/pattern/usefulness/issue-3601.stderr b/src/test/ui/pattern/usefulness/issue-3601.stderr
index 7224270b613..e69f1dcc253 100644
--- a/src/test/ui/pattern/usefulness/issue-3601.stderr
+++ b/src/test/ui/pattern/usefulness/issue-3601.stderr
@@ -5,7 +5,11 @@ LL |         box NodeKind::Element(ed) => match ed.kind {
    |                                            ^^^^^^^ pattern `box _` not covered
    |
    = note: the matched value is of type `Box<ElementKind>`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~             box ElementKind::HTMLImageElement(ref d) if d.image.is_some() => { true }
+LL +             box _ => todo!()
+   |
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/pattern/usefulness/issue-40221.stderr b/src/test/ui/pattern/usefulness/issue-40221.stderr
index 03d507b5af7..6e450a72d75 100644
--- a/src/test/ui/pattern/usefulness/issue-40221.stderr
+++ b/src/test/ui/pattern/usefulness/issue-40221.stderr
@@ -11,7 +11,11 @@ LL |       match proto {
    |             ^^^^^ pattern `C(QA)` not covered
    |
    = note: the matched value is of type `P`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         P::C(PC::Q) => (),
+LL ~         C(QA) => todo!(),
+   |
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/pattern/usefulness/issue-50900.stderr b/src/test/ui/pattern/usefulness/issue-50900.stderr
index 885e31df1e5..8612607fa8b 100644
--- a/src/test/ui/pattern/usefulness/issue-50900.stderr
+++ b/src/test/ui/pattern/usefulness/issue-50900.stderr
@@ -8,7 +8,11 @@ LL |     match Tag::ExifIFDPointer {
    |           ^^^^^^^^^^^^^^^^^^^ pattern `Tag(Exif, _)` not covered
    |
    = note: the matched value is of type `Tag`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         Tag::ExifIFDPointer => {}
+LL +         Tag(Exif, _) => todo!()
+   |
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/pattern/usefulness/match-byte-array-patterns-2.stderr b/src/test/ui/pattern/usefulness/match-byte-array-patterns-2.stderr
index f89b41bb6d8..4913e6e9c9f 100644
--- a/src/test/ui/pattern/usefulness/match-byte-array-patterns-2.stderr
+++ b/src/test/ui/pattern/usefulness/match-byte-array-patterns-2.stderr
@@ -5,7 +5,11 @@ LL |     match buf {
    |           ^^^ patterns `&[0_u8..=64_u8, _, _, _]` and `&[66_u8..=u8::MAX, _, _, _]` not covered
    |
    = note: the matched value is of type `&[u8; 4]`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         b"AAAA" => {}
+LL +         &[0_u8..=64_u8, _, _, _] | &[66_u8..=u8::MAX, _, _, _] => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `&[]`, `&[_]`, `&[_, _]` and 2 more not covered
   --> $DIR/match-byte-array-patterns-2.rs:10:11
@@ -14,7 +18,11 @@ LL |     match buf {
    |           ^^^ patterns `&[]`, `&[_]`, `&[_, _]` and 2 more not covered
    |
    = note: the matched value is of type `&[u8]`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         b"AAAA" => {}
+LL +         _ => todo!()
+   |
 
 error: aborting due to 2 previous errors
 
diff --git a/src/test/ui/pattern/usefulness/match-non-exhaustive.stderr b/src/test/ui/pattern/usefulness/match-non-exhaustive.stderr
index 8d693f9cfcc..63fcd2a9638 100644
--- a/src/test/ui/pattern/usefulness/match-non-exhaustive.stderr
+++ b/src/test/ui/pattern/usefulness/match-non-exhaustive.stderr
@@ -5,7 +5,10 @@ LL |     match 0 { 1 => () }
    |           ^ patterns `i32::MIN..=0_i32` and `2_i32..=i32::MAX` not covered
    |
    = note: the matched value is of type `i32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL |     match 0 { 1 => (), i32::MIN..=0_i32 | 2_i32..=i32::MAX => todo!() }
+   |                      ++++++++++++++++++++++++++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/match-non-exhaustive.rs:3:11
@@ -14,7 +17,10 @@ LL |     match 0 { 0 if false => () }
    |           ^ pattern `_` not covered
    |
    = note: the matched value is of type `i32`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL |     match 0 { 0 if false => (), _ => todo!() }
+   |                               ++++++++++++++
 
 error: aborting due to 2 previous errors
 
diff --git a/src/test/ui/pattern/usefulness/non-exhaustive-defined-here.stderr b/src/test/ui/pattern/usefulness/non-exhaustive-defined-here.stderr
index 8f71184223c..275b0d3ec24 100644
--- a/src/test/ui/pattern/usefulness/non-exhaustive-defined-here.stderr
+++ b/src/test/ui/pattern/usefulness/non-exhaustive-defined-here.stderr
@@ -20,7 +20,11 @@ LL |       match e1 {
    |             ^^ patterns `B` and `C` not covered
    |
    = note: the matched value is of type `E`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         E::A => {}
+LL +         B | C => todo!()
+   |
 
 error[E0005]: refutable pattern in local binding: `B` and `C` not covered
   --> $DIR/non-exhaustive-defined-here.rs:36:9
@@ -73,7 +77,11 @@ LL |       match e {
    |             ^ patterns `&B` and `&C` not covered
    |
    = note: the matched value is of type `&E`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         E::A => {}
+LL +         &B | &C => todo!()
+   |
 
 error[E0005]: refutable pattern in local binding: `&B` and `&C` not covered
   --> $DIR/non-exhaustive-defined-here.rs:44:9
@@ -126,7 +134,11 @@ LL |       match e {
    |             ^ patterns `&&mut &B` and `&&mut &C` not covered
    |
    = note: the matched value is of type `&&mut &E`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         E::A => {}
+LL +         &&mut &B | &&mut &C => todo!()
+   |
 
 error[E0005]: refutable pattern in local binding: `&&mut &B` and `&&mut &C` not covered
   --> $DIR/non-exhaustive-defined-here.rs:52:9
@@ -174,7 +186,11 @@ LL |       match e {
    |             ^ pattern `None` not covered
    |
    = note: the matched value is of type `Opt`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         Opt::Some(ref _x) => {}
+LL +         None => todo!()
+   |
 
 error[E0005]: refutable pattern in local binding: `None` not covered
   --> $DIR/non-exhaustive-defined-here.rs:69:9
diff --git a/src/test/ui/pattern/usefulness/non-exhaustive-match.stderr b/src/test/ui/pattern/usefulness/non-exhaustive-match.stderr
index 1728c5f1321..14370915b85 100644
--- a/src/test/ui/pattern/usefulness/non-exhaustive-match.stderr
+++ b/src/test/ui/pattern/usefulness/non-exhaustive-match.stderr
@@ -11,7 +11,10 @@ LL |     match x { T::B => { } }
    |           ^ pattern `A` not covered
    |
    = note: the matched value is of type `T`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL |     match x { T::B => { } A => todo!() }
+   |                           ++++++++++++
 
 error[E0004]: non-exhaustive patterns: `false` not covered
   --> $DIR/non-exhaustive-match.rs:8:11
@@ -20,7 +23,11 @@ LL |     match true {
    |           ^^^^ pattern `false` not covered
    |
    = note: the matched value is of type `bool`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~       true => {}
+LL +       false => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `Some(_)` not covered
   --> $DIR/non-exhaustive-match.rs:11:11
@@ -34,7 +41,11 @@ LL |     Some(#[stable(feature = "rust1", since = "1.0.0")] T),
    |     ---- not covered
    |
    = note: the matched value is of type `Option<i32>`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~       None => {}
+LL +       Some(_) => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `(_, _, i32::MIN..=3_i32)` and `(_, _, 5_i32..=i32::MAX)` not covered
   --> $DIR/non-exhaustive-match.rs:14:11
@@ -43,7 +54,11 @@ LL |     match (2, 3, 4) {
    |           ^^^^^^^^^ patterns `(_, _, i32::MIN..=3_i32)` and `(_, _, 5_i32..=i32::MAX)` not covered
    |
    = note: the matched value is of type `(i32, i32, i32)`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~       (_, _, 4) => {}
+LL +       (_, _, i32::MIN..=3_i32) | (_, _, 5_i32..=i32::MAX) => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `(A, A)` and `(B, B)` not covered
   --> $DIR/non-exhaustive-match.rs:18:11
@@ -67,7 +82,11 @@ LL |     match T::A {
    |           ^^^^ pattern `B` not covered
    |
    = note: the matched value is of type `T`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~       T::A => {}
+LL +       B => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `[]` not covered
   --> $DIR/non-exhaustive-match.rs:33:11
diff --git a/src/test/ui/pattern/usefulness/non-exhaustive-pattern-witness.stderr b/src/test/ui/pattern/usefulness/non-exhaustive-pattern-witness.stderr
index 7b4f9336799..2cf0b320e15 100644
--- a/src/test/ui/pattern/usefulness/non-exhaustive-pattern-witness.stderr
+++ b/src/test/ui/pattern/usefulness/non-exhaustive-pattern-witness.stderr
@@ -46,7 +46,11 @@ LL |       match Direction::North {
    |             ^^^^^^^^^^^^^^^^ patterns `East`, `South` and `West` not covered
    |
    = note: the matched value is of type `Direction`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         Direction::North => (),
+LL +         East | South | West => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `Second`, `Third`, `Fourth` and 8 more not covered
   --> $DIR/non-exhaustive-pattern-witness.rs:46:11
@@ -60,7 +64,11 @@ LL |       match ExcessiveEnum::First {
    |             ^^^^^^^^^^^^^^^^^^^^ patterns `Second`, `Third`, `Fourth` and 8 more not covered
    |
    = note: the matched value is of type `ExcessiveEnum`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         ExcessiveEnum::First => (),
+LL +         _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `CustomRGBA { a: true, .. }` not covered
   --> $DIR/non-exhaustive-pattern-witness.rs:54:11
@@ -95,7 +103,11 @@ LL |     match ((), false) {
    |           ^^^^^^^^^^^ pattern `((), false)` not covered
    |
    = note: the matched value is of type `((), bool)`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         ((), true) => (),
+LL +         ((), false) => todo!()
+   |
 
 error: aborting due to 7 previous errors
 
diff --git a/src/test/ui/pattern/usefulness/slice-patterns-exhaustiveness.stderr b/src/test/ui/pattern/usefulness/slice-patterns-exhaustiveness.stderr
index 601e0712ed3..1f6d305b344 100644
--- a/src/test/ui/pattern/usefulness/slice-patterns-exhaustiveness.stderr
+++ b/src/test/ui/pattern/usefulness/slice-patterns-exhaustiveness.stderr
@@ -5,7 +5,11 @@ LL |     match s2 {
    |           ^^ pattern `&[false, _]` not covered
    |
    = note: the matched value is of type `&[bool; 2]`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         [true, .., true] => {}
+LL +         &[false, _] => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `&[false, ..]` not covered
   --> $DIR/slice-patterns-exhaustiveness.rs:12:11
@@ -14,7 +18,11 @@ LL |     match s3 {
    |           ^^ pattern `&[false, ..]` not covered
    |
    = note: the matched value is of type `&[bool; 3]`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         [true, .., true] => {}
+LL +         &[false, ..] => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `&[false, ..]` not covered
   --> $DIR/slice-patterns-exhaustiveness.rs:16:11
@@ -23,7 +31,11 @@ LL |     match s10 {
    |           ^^^ pattern `&[false, ..]` not covered
    |
    = note: the matched value is of type `&[bool; 10]`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         [true, .., true] => {}
+LL +         &[false, ..] => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `&[false, true]` not covered
   --> $DIR/slice-patterns-exhaustiveness.rs:25:11
@@ -59,7 +71,11 @@ LL |     match s {
    |           ^ pattern `&[_, ..]` not covered
    |
    = note: the matched value is of type `&[bool]`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         [] => {}
+LL +         &[_, ..] => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `&[_, _, ..]` not covered
   --> $DIR/slice-patterns-exhaustiveness.rs:46:11
@@ -122,7 +138,11 @@ LL |     match s {
    |           ^ patterns `&[]` and `&[_, _, ..]` not covered
    |
    = note: the matched value is of type `&[bool]`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         &[true] => {}
+LL +         &[] | &[_, _, ..] => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `&[]` and `&[_, _, ..]` not covered
   --> $DIR/slice-patterns-exhaustiveness.rs:89:11
@@ -131,7 +151,11 @@ LL |     match s {
    |           ^ patterns `&[]` and `&[_, _, ..]` not covered
    |
    = note: the matched value is of type `&[bool]`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         CONST => {}
+LL +         &[] | &[_, _, ..] => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `&[]` and `&[_, _, ..]` not covered
   --> $DIR/slice-patterns-exhaustiveness.rs:93:11
@@ -176,7 +200,11 @@ LL |     match s1 {
    |           ^^ pattern `&[false]` not covered
    |
    = note: the matched value is of type `&[bool; 1]`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         CONST1 => {}
+LL +         &[false] => todo!()
+   |
 
 error: aborting due to 20 previous errors
 
diff --git a/src/test/ui/pattern/usefulness/stable-gated-patterns.stderr b/src/test/ui/pattern/usefulness/stable-gated-patterns.stderr
index 994fa6d206e..5897bb4177a 100644
--- a/src/test/ui/pattern/usefulness/stable-gated-patterns.stderr
+++ b/src/test/ui/pattern/usefulness/stable-gated-patterns.stderr
@@ -10,7 +10,11 @@ LL |     Stable2,
    |     ------- not covered
    |
    = note: the matched value is of type `Foo`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         Foo::Stable => {}
+LL +         Stable2 | _ => todo!()
+   |
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/stable-gated-patterns.rs:13:11
diff --git a/src/test/ui/pattern/usefulness/type_polymorphic_byte_str_literals.stderr b/src/test/ui/pattern/usefulness/type_polymorphic_byte_str_literals.stderr
index 5b9dc8e7ffc..b83865d90c7 100644
--- a/src/test/ui/pattern/usefulness/type_polymorphic_byte_str_literals.stderr
+++ b/src/test/ui/pattern/usefulness/type_polymorphic_byte_str_literals.stderr
@@ -5,7 +5,11 @@ LL |     match data {
    |           ^^^^ pattern `&[_, ..]` not covered
    |
    = note: the matched value is of type `&[u8]`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         b"" => 1,
+LL ~         &[_, ..] => todo!(),
+   |
 
 error[E0004]: non-exhaustive patterns: `&[]`, `&[_]`, `&[_, _]` and 1 more not covered
   --> $DIR/type_polymorphic_byte_str_literals.rs:23:11
diff --git a/src/test/ui/rfc-2005-default-binding-mode/slice.stderr b/src/test/ui/rfc-2005-default-binding-mode/slice.stderr
index 5e3dfafee19..df5b2000728 100644
--- a/src/test/ui/rfc-2005-default-binding-mode/slice.stderr
+++ b/src/test/ui/rfc-2005-default-binding-mode/slice.stderr
@@ -5,7 +5,11 @@ LL |     match sl {
    |           ^^ pattern `&[]` not covered
    |
    = note: the matched value is of type `&[u8]`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         [first, remainder @ ..] => {}
+LL ~         &[] => todo!(),
+   |
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/uninhabited/uninhabited-matches-feature-gated.stderr b/src/test/ui/uninhabited/uninhabited-matches-feature-gated.stderr
index 6cdc6999a09..0811753cb0d 100644
--- a/src/test/ui/uninhabited/uninhabited-matches-feature-gated.stderr
+++ b/src/test/ui/uninhabited/uninhabited-matches-feature-gated.stderr
@@ -10,7 +10,11 @@ LL |     Err(#[stable(feature = "rust1", since = "1.0.0")] E),
    |     --- not covered
    |
    = note: the matched value is of type `Result<u32, &Void>`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         Ok(n) => n,
+LL ~         Err(_) => todo!(),
+   |
 
 error[E0004]: non-exhaustive patterns: type `&Void` is non-empty
   --> $DIR/uninhabited-matches-feature-gated.rs:15:19
@@ -65,7 +69,11 @@ LL |     let _ = match x {
    |                   ^ pattern `&[_, ..]` not covered
    |
    = note: the matched value is of type `&[Void]`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         &[] => (),
+LL ~         &[_, ..] => todo!(),
+   |
 
 error[E0004]: non-exhaustive patterns: `Err(_)` not covered
   --> $DIR/uninhabited-matches-feature-gated.rs:32:19
@@ -79,7 +87,11 @@ LL |     Err(#[stable(feature = "rust1", since = "1.0.0")] E),
    |     --- not covered
    |
    = note: the matched value is of type `Result<u32, Void>`
-   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   |
+LL ~         Ok(x) => x,
+LL ~         Err(_) => todo!(),
+   |
 
 error[E0005]: refutable pattern in local binding: `Err(_)` not covered
   --> $DIR/uninhabited-matches-feature-gated.rs:37:9