Auto merge of #98307 - matthiaskrgr:rollup-rb3huha, r=matthiaskrgr

Rollup of 4 pull requests

Successful merges:

 - #98235 (Drop magic value 3 from code)
 - #98267 (Don't omit comma when suggesting wildcard arm after macro expr)
 - #98276 (Mention formatting macros when encountering `ArgumentV1` method in const)
 - #98296 (Add a link to the unstable book page on Generator doc comment)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

9 files changed, 309 insertions, 261 deletions

diff --git a/src/test/ui/consts/const-eval/format.rs b/src/test/ui/consts/const-eval/format.rs
new file mode 100644
index 00000000000..e43633da3cc
--- /dev/null
+++ b/src/test/ui/consts/const-eval/format.rs
@@ -0,0 +1,21 @@
+const fn failure() {
+    panic!("{:?}", 0);
+    //~^ ERROR cannot call non-const formatting macro in constant functions
+    //~| ERROR erroneous constant used
+    //~| ERROR erroneous constant used
+    //~| WARN this was previously accepted by the compiler
+    //~| WARN this was previously accepted by the compiler
+}
+
+const fn print() {
+    println!("{:?}", 0);
+    //~^ ERROR cannot call non-const formatting macro in constant functions
+    //~| ERROR `Arguments::<'a>::new_v1` is not yet stable as a const fn
+    //~| ERROR cannot call non-const fn `_print` in constant functions
+    //~| ERROR erroneous constant used
+    //~| ERROR erroneous constant used
+    //~| WARN this was previously accepted by the compiler
+    //~| WARN this was previously accepted by the compiler
+}
+
+fn main() {}
diff --git a/src/test/ui/consts/const-eval/format.stderr b/src/test/ui/consts/const-eval/format.stderr
new file mode 100644
index 00000000000..44f436ae4e3
--- /dev/null
+++ b/src/test/ui/consts/const-eval/format.stderr
@@ -0,0 +1,78 @@
+error[E0015]: cannot call non-const formatting macro in constant functions
+  --> $DIR/format.rs:2:20
+   |
+LL |     panic!("{:?}", 0);
+   |                    ^
+   |
+   = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
+   = note: this error originates in the macro `$crate::const_format_args` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0015]: cannot call non-const formatting macro in constant functions
+  --> $DIR/format.rs:11:22
+   |
+LL |     println!("{:?}", 0);
+   |                      ^
+   |
+   = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
+   = note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: `Arguments::<'a>::new_v1` is not yet stable as a const fn
+  --> $DIR/format.rs:11:5
+   |
+LL |     println!("{:?}", 0);
+   |     ^^^^^^^^^^^^^^^^^^^
+   |
+   = help: add `#![feature(const_fmt_arguments_new)]` to the crate attributes to enable
+   = note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0015]: cannot call non-const fn `_print` in constant functions
+  --> $DIR/format.rs:11:5
+   |
+LL |     println!("{:?}", 0);
+   |     ^^^^^^^^^^^^^^^^^^^
+   |
+   = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
+   = note: this error originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: erroneous constant used
+  --> $DIR/format.rs:2:12
+   |
+LL |     panic!("{:?}", 0);
+   |            ^^^^^^ referenced constant has errors
+   |
+   = note: `#[deny(const_err)]` on by default
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+
+error: erroneous constant used
+  --> $DIR/format.rs:2:20
+   |
+LL |     panic!("{:?}", 0);
+   |                    ^ referenced constant has errors
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   = note: this error originates in the macro `$crate::const_format_args` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: erroneous constant used
+  --> $DIR/format.rs:11:14
+   |
+LL |     println!("{:?}", 0);
+   |              ^^^^^^ referenced constant has errors
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+
+error: erroneous constant used
+  --> $DIR/format.rs:11:22
+   |
+LL |     println!("{:?}", 0);
+   |                      ^ referenced constant has errors
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
+   = note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 8 previous errors
+
+For more information about this error, try `rustc --explain E0015`.
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 7a2441047b5..d429b4e8eff 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
@@ -7,9 +7,8 @@ LL |     m!(0f32, f32::NEG_INFINITY..);
    = note: the matched value is of type `f32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         _ => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, _ => todo!() }
+   |                                ++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:17:8
@@ -20,9 +19,8 @@ LL |     m!(0f32, ..f32::INFINITY);
    = note: the matched value is of type `f32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         _ => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, _ => todo!() }
+   |                                ++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `'\u{10ffff}'` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:26:8
@@ -33,9 +31,8 @@ LL |     m!('a', ..core::char::MAX);
    = note: the matched value is of type `char`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         '\u{10ffff}' => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, '\u{10ffff}' => todo!() }
+   |                                +++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `'\u{10fffe}'..='\u{10ffff}'` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:27:8
@@ -46,9 +43,8 @@ LL |     m!('a', ..ALMOST_MAX);
    = note: the matched value is of type `char`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         '\u{10fffe}'..='\u{10ffff}' => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, '\u{10fffe}'..='\u{10ffff}' => todo!() }
+   |                                ++++++++++++++++++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `'\0'` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:28:8
@@ -59,9 +55,8 @@ LL |     m!('a', ALMOST_MIN..);
    = note: the matched value is of type `char`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         '\0' => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, '\0' => todo!() }
+   |                                +++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `'\u{10ffff}'` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:29:8
@@ -72,9 +67,8 @@ LL |     m!('a', ..=ALMOST_MAX);
    = note: the matched value is of type `char`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         '\u{10ffff}' => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, '\u{10ffff}' => todo!() }
+   |                                +++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `'b'` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:30:8
@@ -85,9 +79,8 @@ LL |     m!('a', ..=VAL | VAL_2..);
    = note: the matched value is of type `char`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         'b' => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 'b' => todo!() }
+   |                                ++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `'b'` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:31:8
@@ -98,9 +91,8 @@ LL |     m!('a', ..VAL_1 | VAL_2..);
    = note: the matched value is of type `char`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         'b' => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 'b' => todo!() }
+   |                                ++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `u8::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:41:12
@@ -111,9 +103,8 @@ LL |         m!(0, ..u8::MAX);
    = note: the matched value is of type `u8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         u8::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, u8::MAX => todo!() }
+   |                                ++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `254_u8..=u8::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:42:12
@@ -124,9 +115,8 @@ LL |         m!(0, ..ALMOST_MAX);
    = note: the matched value is of type `u8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         254_u8..=u8::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 254_u8..=u8::MAX => todo!() }
+   |                                +++++++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `0_u8` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:43:12
@@ -137,9 +127,8 @@ LL |         m!(0, ALMOST_MIN..);
    = note: the matched value is of type `u8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         0_u8 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 0_u8 => todo!() }
+   |                                +++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `u8::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:44:12
@@ -150,9 +139,8 @@ LL |         m!(0, ..=ALMOST_MAX);
    = note: the matched value is of type `u8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         u8::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, u8::MAX => todo!() }
+   |                                ++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_u8` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:45:12
@@ -163,9 +151,8 @@ LL |         m!(0, ..=VAL | VAL_2..);
    = note: the matched value is of type `u8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_u8 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_u8 => todo!() }
+   |                                ++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_u8` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:46:12
@@ -176,9 +163,8 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    = note: the matched value is of type `u8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_u8 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_u8 => todo!() }
+   |                                ++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `u16::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:54:12
@@ -189,9 +175,8 @@ LL |         m!(0, ..u16::MAX);
    = note: the matched value is of type `u16`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         u16::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, u16::MAX => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `65534_u16..=u16::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:55:12
@@ -202,9 +187,8 @@ LL |         m!(0, ..ALMOST_MAX);
    = note: the matched value is of type `u16`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         65534_u16..=u16::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 65534_u16..=u16::MAX => todo!() }
+   |                                +++++++++++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `0_u16` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:56:12
@@ -215,9 +199,8 @@ LL |         m!(0, ALMOST_MIN..);
    = note: the matched value is of type `u16`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         0_u16 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 0_u16 => todo!() }
+   |                                ++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `u16::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:57:12
@@ -228,9 +211,8 @@ LL |         m!(0, ..=ALMOST_MAX);
    = note: the matched value is of type `u16`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         u16::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, u16::MAX => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_u16` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:58:12
@@ -241,9 +223,8 @@ LL |         m!(0, ..=VAL | VAL_2..);
    = note: the matched value is of type `u16`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_u16 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_u16 => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_u16` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:59:12
@@ -254,9 +235,8 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    = note: the matched value is of type `u16`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_u16 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_u16 => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `u32::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:67:12
@@ -267,9 +247,8 @@ LL |         m!(0, ..u32::MAX);
    = note: the matched value is of type `u32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         u32::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, u32::MAX => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `4294967294_u32..=u32::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:68:12
@@ -280,9 +259,8 @@ LL |         m!(0, ..ALMOST_MAX);
    = note: the matched value is of type `u32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         4294967294_u32..=u32::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 4294967294_u32..=u32::MAX => todo!() }
+   |                                ++++++++++++++++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `0_u32` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:69:12
@@ -293,9 +271,8 @@ LL |         m!(0, ALMOST_MIN..);
    = note: the matched value is of type `u32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         0_u32 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 0_u32 => todo!() }
+   |                                ++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `u32::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:70:12
@@ -306,9 +283,8 @@ LL |         m!(0, ..=ALMOST_MAX);
    = note: the matched value is of type `u32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         u32::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, u32::MAX => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_u32` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:71:12
@@ -319,9 +295,8 @@ LL |         m!(0, ..=VAL | VAL_2..);
    = note: the matched value is of type `u32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_u32 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_u32 => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_u32` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:72:12
@@ -332,9 +307,8 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    = note: the matched value is of type `u32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_u32 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_u32 => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `u64::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:80:12
@@ -345,9 +319,8 @@ LL |         m!(0, ..u64::MAX);
    = note: the matched value is of type `u64`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         u64::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, u64::MAX => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `18446744073709551614_u64..=u64::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:81:12
@@ -358,9 +331,8 @@ LL |         m!(0, ..ALMOST_MAX);
    = note: the matched value is of type `u64`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         18446744073709551614_u64..=u64::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 18446744073709551614_u64..=u64::MAX => todo!() }
+   |                                ++++++++++++++++++++++++++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `0_u64` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:82:12
@@ -371,9 +343,8 @@ LL |         m!(0, ALMOST_MIN..);
    = note: the matched value is of type `u64`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         0_u64 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 0_u64 => todo!() }
+   |                                ++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `u64::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:83:12
@@ -384,9 +355,8 @@ LL |         m!(0, ..=ALMOST_MAX);
    = note: the matched value is of type `u64`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         u64::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, u64::MAX => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_u64` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:84:12
@@ -397,9 +367,8 @@ LL |         m!(0, ..=VAL | VAL_2..);
    = note: the matched value is of type `u64`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_u64 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_u64 => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_u64` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:85:12
@@ -410,9 +379,8 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    = note: the matched value is of type `u64`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_u64 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_u64 => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `u128::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:93:12
@@ -423,9 +391,8 @@ LL |         m!(0, ..u128::MAX);
    = note: the matched value is of type `u128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         u128::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, u128::MAX => todo!() }
+   |                                ++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `340282366920938463463374607431768211454_u128..=u128::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:94:12
@@ -436,9 +403,8 @@ LL |         m!(0, ..ALMOST_MAX);
    = note: the matched value is of type `u128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         340282366920938463463374607431768211454_u128..=u128::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 340282366920938463463374607431768211454_u128..=u128::MAX => todo!() }
+   |                                +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `0_u128` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:95:12
@@ -449,9 +415,8 @@ LL |         m!(0, ALMOST_MIN..);
    = note: the matched value is of type `u128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         0_u128 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 0_u128 => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `u128::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:96:12
@@ -462,9 +427,8 @@ LL |         m!(0, ..=ALMOST_MAX);
    = note: the matched value is of type `u128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         u128::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, u128::MAX => todo!() }
+   |                                ++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_u128` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:97:12
@@ -475,9 +439,8 @@ LL |         m!(0, ..=VAL | VAL_2..);
    = note: the matched value is of type `u128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_u128 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_u128 => todo!() }
+   |                                ++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_u128` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:98:12
@@ -488,9 +451,8 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    = note: the matched value is of type `u128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_u128 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_u128 => todo!() }
+   |                                ++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i8::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:109:12
@@ -501,9 +463,8 @@ LL |         m!(0, ..i8::MAX);
    = note: the matched value is of type `i8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i8::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i8::MAX => todo!() }
+   |                                ++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `126_i8..=i8::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:110:12
@@ -514,9 +475,8 @@ LL |         m!(0, ..ALMOST_MAX);
    = note: the matched value is of type `i8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         126_i8..=i8::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 126_i8..=i8::MAX => todo!() }
+   |                                +++++++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i8::MIN` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:111:12
@@ -527,9 +487,8 @@ LL |         m!(0, ALMOST_MIN..);
    = note: the matched value is of type `i8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i8::MIN => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i8::MIN => todo!() }
+   |                                ++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i8::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:112:12
@@ -540,9 +499,8 @@ LL |         m!(0, ..=ALMOST_MAX);
    = note: the matched value is of type `i8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i8::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i8::MAX => todo!() }
+   |                                ++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_i8` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:113:12
@@ -553,9 +511,8 @@ LL |         m!(0, ..=VAL | VAL_2..);
    = note: the matched value is of type `i8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_i8 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_i8 => todo!() }
+   |                                ++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_i8` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:114:12
@@ -566,9 +523,8 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    = note: the matched value is of type `i8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_i8 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_i8 => todo!() }
+   |                                ++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i16::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:122:12
@@ -579,9 +535,8 @@ LL |         m!(0, ..i16::MAX);
    = note: the matched value is of type `i16`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i16::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i16::MAX => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `32766_i16..=i16::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:123:12
@@ -592,9 +547,8 @@ LL |         m!(0, ..ALMOST_MAX);
    = note: the matched value is of type `i16`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         32766_i16..=i16::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 32766_i16..=i16::MAX => todo!() }
+   |                                +++++++++++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i16::MIN` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:124:12
@@ -605,9 +559,8 @@ LL |         m!(0, ALMOST_MIN..);
    = note: the matched value is of type `i16`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i16::MIN => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i16::MIN => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i16::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:125:12
@@ -618,9 +571,8 @@ LL |         m!(0, ..=ALMOST_MAX);
    = note: the matched value is of type `i16`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i16::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i16::MAX => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_i16` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:126:12
@@ -631,9 +583,8 @@ LL |         m!(0, ..=VAL | VAL_2..);
    = note: the matched value is of type `i16`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_i16 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_i16 => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_i16` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:127:12
@@ -644,9 +595,8 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    = note: the matched value is of type `i16`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_i16 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_i16 => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i32::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:135:12
@@ -657,9 +607,8 @@ LL |         m!(0, ..i32::MAX);
    = note: the matched value is of type `i32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i32::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i32::MAX => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `2147483646_i32..=i32::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:136:12
@@ -670,9 +619,8 @@ LL |         m!(0, ..ALMOST_MAX);
    = note: the matched value is of type `i32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         2147483646_i32..=i32::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 2147483646_i32..=i32::MAX => todo!() }
+   |                                ++++++++++++++++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i32::MIN` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:137:12
@@ -683,9 +631,8 @@ LL |         m!(0, ALMOST_MIN..);
    = note: the matched value is of type `i32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i32::MIN => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i32::MIN => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i32::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:138:12
@@ -696,9 +643,8 @@ LL |         m!(0, ..=ALMOST_MAX);
    = note: the matched value is of type `i32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i32::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i32::MAX => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_i32` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:139:12
@@ -709,9 +655,8 @@ LL |         m!(0, ..=VAL | VAL_2..);
    = note: the matched value is of type `i32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_i32 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_i32 => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_i32` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:140:12
@@ -722,9 +667,8 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    = note: the matched value is of type `i32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_i32 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_i32 => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i64::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:148:12
@@ -735,9 +679,8 @@ LL |         m!(0, ..i64::MAX);
    = note: the matched value is of type `i64`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i64::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i64::MAX => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `9223372036854775806_i64..=i64::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:149:12
@@ -748,9 +691,8 @@ LL |         m!(0, ..ALMOST_MAX);
    = note: the matched value is of type `i64`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         9223372036854775806_i64..=i64::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 9223372036854775806_i64..=i64::MAX => todo!() }
+   |                                +++++++++++++++++++++++++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i64::MIN` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:150:12
@@ -761,9 +703,8 @@ LL |         m!(0, ALMOST_MIN..);
    = note: the matched value is of type `i64`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i64::MIN => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i64::MIN => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i64::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:151:12
@@ -774,9 +715,8 @@ LL |         m!(0, ..=ALMOST_MAX);
    = note: the matched value is of type `i64`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i64::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i64::MAX => todo!() }
+   |                                +++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_i64` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:152:12
@@ -787,9 +727,8 @@ LL |         m!(0, ..=VAL | VAL_2..);
    = note: the matched value is of type `i64`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_i64 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_i64 => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_i64` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:153:12
@@ -800,9 +739,8 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    = note: the matched value is of type `i64`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_i64 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_i64 => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i128::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:161:12
@@ -813,9 +751,8 @@ LL |         m!(0, ..i128::MAX);
    = note: the matched value is of type `i128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i128::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i128::MAX => todo!() }
+   |                                ++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `170141183460469231731687303715884105726_i128..=i128::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:162:12
@@ -826,9 +763,8 @@ LL |         m!(0, ..ALMOST_MAX);
    = note: the matched value is of type `i128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         170141183460469231731687303715884105726_i128..=i128::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 170141183460469231731687303715884105726_i128..=i128::MAX => todo!() }
+   |                                +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i128::MIN` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:163:12
@@ -839,9 +775,8 @@ LL |         m!(0, ALMOST_MIN..);
    = note: the matched value is of type `i128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i128::MIN => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i128::MIN => todo!() }
+   |                                ++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i128::MAX` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:164:12
@@ -852,9 +787,8 @@ LL |         m!(0, ..=ALMOST_MAX);
    = note: the matched value is of type `i128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i128::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i128::MAX => todo!() }
+   |                                ++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_i128` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:165:12
@@ -865,9 +799,8 @@ LL |         m!(0, ..=VAL | VAL_2..);
    = note: the matched value is of type `i128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_i128 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_i128 => todo!() }
+   |                                ++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `43_i128` not covered
   --> $DIR/half-open-range-pats-exhaustive-fail.rs:166:12
@@ -878,9 +811,8 @@ LL |         m!(0, ..VAL_1 | VAL_2..);
    = note: the matched value is of type `i128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         43_i128 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 43_i128 => todo!() }
+   |                                ++++++++++++++++++++
 
 error: aborting due to 68 previous errors
 
diff --git a/src/test/ui/issue-94866.rs b/src/test/ui/issue-94866.rs
new file mode 100644
index 00000000000..c4203487936
--- /dev/null
+++ b/src/test/ui/issue-94866.rs
@@ -0,0 +1,14 @@
+macro_rules! m {
+    () => {
+        {}
+    };
+}
+
+enum Enum { A, B }
+
+fn main() {
+    match Enum::A {
+    //~^ ERROR non-exhaustive patterns
+    Enum::A => m!()
+    }
+}
diff --git a/src/test/ui/issue-94866.stderr b/src/test/ui/issue-94866.stderr
new file mode 100644
index 00000000000..5477d83f449
--- /dev/null
+++ b/src/test/ui/issue-94866.stderr
@@ -0,0 +1,21 @@
+error[E0004]: non-exhaustive patterns: `B` not covered
+  --> $DIR/issue-94866.rs:10:11
+   |
+LL |     match Enum::A {
+   |           ^^^^^^^ pattern `B` not covered
+   |
+note: `Enum` defined here
+  --> $DIR/issue-94866.rs:7:16
+   |
+LL | enum Enum { A, B }
+   |      ----      ^ not covered
+   = note: the matched value is of type `Enum`
+help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
+   |
+LL ~     Enum::A => m!(),
+LL +     B => todo!()
+   |
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0004`.
diff --git a/src/test/ui/pattern/usefulness/integer-ranges/exhaustiveness.stderr b/src/test/ui/pattern/usefulness/integer-ranges/exhaustiveness.stderr
index fec54e89d63..f30ba05dff9 100644
--- a/src/test/ui/pattern/usefulness/integer-ranges/exhaustiveness.stderr
+++ b/src/test/ui/pattern/usefulness/integer-ranges/exhaustiveness.stderr
@@ -7,9 +7,8 @@ LL |     m!(0u8, 0..255);
    = note: the matched value is of type `u8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         u8::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, u8::MAX => todo!() }
+   |                                ++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `u8::MAX` not covered
   --> $DIR/exhaustiveness.rs:48:8
@@ -20,9 +19,8 @@ LL |     m!(0u8, 0..=254);
    = note: the matched value is of type `u8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         u8::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, u8::MAX => todo!() }
+   |                                ++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `0_u8` not covered
   --> $DIR/exhaustiveness.rs:49:8
@@ -33,9 +31,8 @@ LL |     m!(0u8, 1..=255);
    = note: the matched value is of type `u8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         0_u8 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 0_u8 => todo!() }
+   |                                +++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `42_u8` not covered
   --> $DIR/exhaustiveness.rs:50:8
@@ -46,9 +43,8 @@ LL |     m!(0u8, 0..42 | 43..=255);
    = note: the matched value is of type `u8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         42_u8 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 42_u8 => todo!() }
+   |                                ++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i8::MAX` not covered
   --> $DIR/exhaustiveness.rs:51:8
@@ -59,9 +55,8 @@ LL |     m!(0i8, -128..127);
    = note: the matched value is of type `i8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i8::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i8::MAX => todo!() }
+   |                                ++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i8::MAX` not covered
   --> $DIR/exhaustiveness.rs:52:8
@@ -72,9 +67,8 @@ LL |     m!(0i8, -128..=126);
    = note: the matched value is of type `i8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i8::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i8::MAX => todo!() }
+   |                                ++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `i8::MIN` not covered
   --> $DIR/exhaustiveness.rs:53:8
@@ -85,9 +79,8 @@ LL |     m!(0i8, -127..=127);
    = note: the matched value is of type `i8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         i8::MIN => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, i8::MIN => todo!() }
+   |                                ++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `0_i8` not covered
   --> $DIR/exhaustiveness.rs:54:11
@@ -111,9 +104,8 @@ LL |     m!(0u128, 0..=ALMOST_MAX);
    = note: the matched value is of type `u128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         u128::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, u128::MAX => todo!() }
+   |                                ++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `5_u128..=u128::MAX` not covered
   --> $DIR/exhaustiveness.rs:60:8
@@ -124,9 +116,8 @@ LL |     m!(0u128, 0..=4);
    = note: the matched value is of type `u128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         5_u128..=u128::MAX => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 5_u128..=u128::MAX => todo!() }
+   |                                +++++++++++++++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `0_u128` not covered
   --> $DIR/exhaustiveness.rs:61:8
@@ -137,9 +128,8 @@ LL |     m!(0u128, 1..=u128::MAX);
    = note: the matched value is of type `u128`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         0_u128 => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, 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 fa4146a7ad8..e3eb98ccdcd 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
@@ -39,9 +39,8 @@ LL |     m!(0usize, 0..=usize::MAX);
    = 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 by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         _ => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, _ => todo!() }
+   |                                ++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/pointer-sized-int.rs:24:8
@@ -54,9 +53,8 @@ LL |     m!(0usize, 0..5 | 5..=usize::MAX);
    = 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 by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         _ => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, _ => todo!() }
+   |                                ++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/pointer-sized-int.rs:26:8
@@ -69,9 +67,8 @@ LL |     m!(0usize, 0..usize::MAX | usize::MAX);
    = 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 by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         _ => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, _ => todo!() }
+   |                                ++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `(_, _)` not covered
   --> $DIR/pointer-sized-int.rs:28:8
@@ -82,9 +79,8 @@ LL |     m!((0usize, true), (0..5, true) | (5..=usize::MAX, true) | (0..=usize::
    = note: the matched value is of type `(usize, bool)`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         (_, _) => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, (_, _) => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/pointer-sized-int.rs:31:8
@@ -97,9 +93,8 @@ LL |     m!(0isize, isize::MIN..=isize::MAX);
    = 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 by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         _ => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, _ => todo!() }
+   |                                ++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/pointer-sized-int.rs:33:8
@@ -112,9 +107,8 @@ LL |     m!(0isize, isize::MIN..5 | 5..=isize::MAX);
    = 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 by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         _ => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, _ => todo!() }
+   |                                ++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/pointer-sized-int.rs:35:8
@@ -127,9 +121,8 @@ LL |     m!(0isize, isize::MIN..isize::MAX | isize::MAX);
    = 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 by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         _ => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, _ => todo!() }
+   |                                ++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `(_, _)` not covered
   --> $DIR/pointer-sized-int.rs:37:8
@@ -140,9 +133,8 @@ LL |     m!((0isize, true), (isize::MIN..5, true)
    = note: the matched value is of type `(isize, bool)`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         match $s { $($t)+ => {}
-LL ~         (_, _) => todo!() }
-   |
+LL |         match $s { $($t)+ => {}, (_, _) => todo!() }
+   |                                +++++++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `_` not covered
   --> $DIR/pointer-sized-int.rs:41:11
diff --git a/src/test/ui/pattern/usefulness/non-exhaustive-match.stderr b/src/test/ui/pattern/usefulness/non-exhaustive-match.stderr
index e7fa6a7814f..89b4e06efda 100644
--- a/src/test/ui/pattern/usefulness/non-exhaustive-match.stderr
+++ b/src/test/ui/pattern/usefulness/non-exhaustive-match.stderr
@@ -12,8 +12,8 @@ LL | enum T { A, B }
    = note: the matched value is of type `T`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL |     match x { T::B => { } A => todo!() }
-   |                           ++++++++++++
+LL |     match x { T::B => { }, A => todo!() }
+   |                          ++++++++++++++
 
 error[E0004]: non-exhaustive patterns: `false` not covered
   --> $DIR/non-exhaustive-match.rs:8:11
diff --git a/src/test/ui/pattern/usefulness/tuple-struct-nonexhaustive.stderr b/src/test/ui/pattern/usefulness/tuple-struct-nonexhaustive.stderr
index fc0430d06fa..e2a65ff8524 100644
--- a/src/test/ui/pattern/usefulness/tuple-struct-nonexhaustive.stderr
+++ b/src/test/ui/pattern/usefulness/tuple-struct-nonexhaustive.stderr
@@ -12,7 +12,7 @@ LL | struct Foo(isize, isize);
    = note: the matched value is of type `Foo`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         Foo(2, b) => println!("{}", b)
+LL ~         Foo(2, b) => println!("{}", b),
 LL +         Foo(_, _) => todo!()
    |