Auto merge of #73246 - Dylan-DPC:rollup-xnm531f, r=Dylan-DPC

Rollup of 7 pull requests

Successful merges:

 - #72180 (remove extra space from crate-level doctest names)
 - #73012 (Show `SyntaxContext` in formatted `Span` debug output)
 - #73097 (Try_run must only be used if toolstate is populated)
 - #73169 (Handle assembler warnings properly)
 - #73182 (Track span of function in method calls, and use this in #[track_caller])
 - #73207 (Clean up E0648 explanation)
 - #73230 (Suggest including unused asm arguments in a comment to avoid error)

Failed merges:

r? @ghost

10 files changed, 119 insertions, 34 deletions

diff --git a/src/test/rustdoc-ui/doctest-output.rs b/src/test/rustdoc-ui/doctest-output.rs
new file mode 100644
index 00000000000..f812263c252
--- /dev/null
+++ b/src/test/rustdoc-ui/doctest-output.rs
@@ -0,0 +1,15 @@
+// compile-flags:--test --test-args=--test-threads=1
+// normalize-stdout-test: "src/test/rustdoc-ui" -> "$$DIR"
+// check-pass
+
+//! ```
+//! assert_eq!(1 + 1, 2);
+//! ```
+
+pub mod foo {
+
+    /// ```
+    /// assert_eq!(1 + 1, 2);
+    /// ```
+    pub fn bar() {}
+}
diff --git a/src/test/rustdoc-ui/doctest-output.stdout b/src/test/rustdoc-ui/doctest-output.stdout
new file mode 100644
index 00000000000..9a55bf50196
--- /dev/null
+++ b/src/test/rustdoc-ui/doctest-output.stdout
@@ -0,0 +1,7 @@
+
+running 2 tests
+test $DIR/doctest-output.rs - (line 5) ... ok
+test $DIR/doctest-output.rs - foo::bar (line 11) ... ok
+
+test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
+
diff --git a/src/test/ui-fulldeps/pprust-expr-roundtrip.rs b/src/test/ui-fulldeps/pprust-expr-roundtrip.rs
index cef600bed5f..6da26e6cfbe 100644
--- a/src/test/ui-fulldeps/pprust-expr-roundtrip.rs
+++ b/src/test/ui-fulldeps/pprust-expr-roundtrip.rs
@@ -84,9 +84,9 @@ fn iter_exprs(depth: usize, f: &mut dyn FnMut(P<Expr>)) {
             2 => {
                 let seg = PathSegment::from_ident(Ident::from_str("x"));
                 iter_exprs(depth - 1, &mut |e| g(ExprKind::MethodCall(
-                            seg.clone(), vec![e, make_x()])));
+                            seg.clone(), vec![e, make_x()], DUMMY_SP)));
                 iter_exprs(depth - 1, &mut |e| g(ExprKind::MethodCall(
-                            seg.clone(), vec![make_x(), e])));
+                            seg.clone(), vec![make_x(), e], DUMMY_SP)));
             },
             3..=8 => {
                 let op = Spanned {
diff --git a/src/test/ui/asm/bad-template.rs b/src/test/ui/asm/bad-template.rs
index 0b333eca1ab..21ce8c6236d 100644
--- a/src/test/ui/asm/bad-template.rs
+++ b/src/test/ui/asm/bad-template.rs
@@ -22,5 +22,7 @@ fn main() {
         //~^ ERROR invalid reference to argument at index 0
         asm!("{:foo}", in(reg) foo);
         //~^ ERROR asm template modifier must be a single character
+        asm!("", in(reg) 0, in(reg) 1);
+        //~^ ERROR multiple unused asm arguments
     }
 }
diff --git a/src/test/ui/asm/bad-template.stderr b/src/test/ui/asm/bad-template.stderr
index 2de76ef8241..1aea7467ed0 100644
--- a/src/test/ui/asm/bad-template.stderr
+++ b/src/test/ui/asm/bad-template.stderr
@@ -19,6 +19,8 @@ error: argument never used
    |
 LL |         asm!("{1}", in(reg) foo);
    |                     ^^^^^^^^^^^ argument never used
+   |
+   = help: if this argument is intentionally unused, consider using it in an asm comment: `"/* {0} */"`
 
 error: there is no argument named `a`
   --> $DIR/bad-template.rs:13:15
@@ -46,6 +48,8 @@ error: named argument never used
    |
 LL |         asm!("{}", a = in(reg) foo);
    |                    ^^^^^^^^^^^^^^^ named argument never used
+   |
+   = help: if this argument is intentionally unused, consider using it in an asm comment: `"/* {a} */"`
 
 error: invalid reference to argument at index 1
   --> $DIR/bad-template.rs:18:15
@@ -60,6 +64,8 @@ error: named argument never used
    |
 LL |         asm!("{1}", a = in(reg) foo);
    |                     ^^^^^^^^^^^^^^^ named argument never used
+   |
+   = help: if this argument is intentionally unused, consider using it in an asm comment: `"/* {a} */"`
 
 error: invalid reference to argument at index 0
   --> $DIR/bad-template.rs:21:15
@@ -82,5 +88,15 @@ error: asm template modifier must be a single character
 LL |         asm!("{:foo}", in(reg) foo);
    |                 ^^^
 
-error: aborting due to 10 previous errors
+error: multiple unused asm arguments
+  --> $DIR/bad-template.rs:25:18
+   |
+LL |         asm!("", in(reg) 0, in(reg) 1);
+   |                  ^^^^^^^^^  ^^^^^^^^^ argument never used
+   |                  |
+   |                  argument never used
+   |
+   = help: if these arguments are intentionally unused, consider using them in an asm comment: `"/* {0} {1} */"`
+
+error: aborting due to 11 previous errors
 
diff --git a/src/test/ui/asm/parse-error.stderr b/src/test/ui/asm/parse-error.stderr
index fa422f56bec..583a1057036 100644
--- a/src/test/ui/asm/parse-error.stderr
+++ b/src/test/ui/asm/parse-error.stderr
@@ -127,6 +127,8 @@ error: argument never used
    |
 LL |         asm!("{a}", a = const foo, a = const bar);
    |                                    ^^^^^^^^^^^^^ argument never used
+   |
+   = help: if this argument is intentionally unused, consider using it in an asm comment: `"/* {1} */"`
 
 error: explicit register arguments cannot have names
   --> $DIR/parse-error.rs:47:18
diff --git a/src/test/ui/asm/srcloc.rs b/src/test/ui/asm/srcloc.rs
index 7af6f620a98..402adc50d5b 100644
--- a/src/test/ui/asm/srcloc.rs
+++ b/src/test/ui/asm/srcloc.rs
@@ -37,5 +37,8 @@ fn main() {
 
         asm!(concat!("invalid", "_", "instruction"));
         //~^ ERROR: invalid instruction mnemonic 'invalid_instruction'
+
+        asm!("movaps %xmm3, (%esi, 2)", options(att_syntax));
+        //~^ WARN: scale factor without index register is ignored
     }
 }
diff --git a/src/test/ui/asm/srcloc.stderr b/src/test/ui/asm/srcloc.stderr
index 57a4fbb9742..d5d12b00481 100644
--- a/src/test/ui/asm/srcloc.stderr
+++ b/src/test/ui/asm/srcloc.stderr
@@ -70,5 +70,17 @@ note: instantiated into assembly here
 LL |     invalid_instruction
    |     ^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 6 previous errors
+warning: scale factor without index register is ignored
+  --> $DIR/srcloc.rs:41:15
+   |
+LL |         asm!("movaps %xmm3, (%esi, 2)", options(att_syntax));
+   |               ^
+   |
+note: instantiated into assembly here
+  --> <inline asm>:1:23
+   |
+LL |     movaps %xmm3, (%esi, 2)
+   |                          ^
+
+error: aborting due to 6 previous errors; 1 warning emitted
 
diff --git a/src/test/ui/proc-macro/debug/dump-debug-span-debug.stderr b/src/test/ui/proc-macro/debug/dump-debug-span-debug.stderr
index 163a2c9f44c..2c05bdbc492 100644
--- a/src/test/ui/proc-macro/debug/dump-debug-span-debug.stderr
+++ b/src/test/ui/proc-macro/debug/dump-debug-span-debug.stderr
@@ -1,166 +1,166 @@
-TokenStream [Ident { ident: "ident", span: $DIR/dump-debug-span-debug.rs:9:5: 9:10 }, Ident { ident: "r#ident", span: $DIR/dump-debug-span-debug.rs:10:5: 10:12 }, Punct { ch: ',', spacing: Alone, span: $DIR/dump-debug-span-debug.rs:11:5: 11:6 }, Punct { ch: '=', spacing: Joint, span: $DIR/dump-debug-span-debug.rs:12:5: 12:7 }, Punct { ch: '=', spacing: Joint, span: $DIR/dump-debug-span-debug.rs:12:5: 12:7 }, Punct { ch: '>', spacing: Alone, span: $DIR/dump-debug-span-debug.rs:12:7: 12:8 }, Group { delimiter: Parenthesis, stream: TokenStream [], span: $DIR/dump-debug-span-debug.rs:13:5: 13:7 }, Group { delimiter: Bracket, stream: TokenStream [Ident { ident: "_", span: $DIR/dump-debug-span-debug.rs:14:6: 14:7 }], span: $DIR/dump-debug-span-debug.rs:14:5: 14:8 }, Literal { kind: Integer, symbol: "0", suffix: None, span: $DIR/dump-debug-span-debug.rs:17:5: 17:6 }, Literal { kind: Float, symbol: "1.0", suffix: None, span: $DIR/dump-debug-span-debug.rs:18:5: 18:8 }, Literal { kind: Str, symbol: "S", suffix: None, span: $DIR/dump-debug-span-debug.rs:19:5: 19:8 }, Literal { kind: ByteStr, symbol: "B", suffix: None, span: $DIR/dump-debug-span-debug.rs:20:5: 20:9 }, Literal { kind: StrRaw(0), symbol: "R", suffix: None, span: $DIR/dump-debug-span-debug.rs:21:5: 21:9 }, Literal { kind: StrRaw(2), symbol: "R", suffix: None, span: $DIR/dump-debug-span-debug.rs:22:5: 22:13 }, Literal { kind: ByteStrRaw(0), symbol: "BR", suffix: None, span: $DIR/dump-debug-span-debug.rs:23:5: 23:11 }, Literal { kind: ByteStrRaw(2), symbol: "BR", suffix: None, span: $DIR/dump-debug-span-debug.rs:24:5: 24:15 }, Literal { kind: Char, symbol: "C", suffix: None, span: $DIR/dump-debug-span-debug.rs:25:5: 25:8 }, Literal { kind: Byte, symbol: "B", suffix: None, span: $DIR/dump-debug-span-debug.rs:26:5: 26:9 }, Literal { kind: Integer, symbol: "0", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:29:5: 29:7 }, Literal { kind: Float, symbol: "1.0", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:30:5: 30:9 }, Literal { kind: Str, symbol: "S", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:31:5: 31:9 }, Literal { kind: ByteStr, symbol: "B", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:32:5: 32:10 }, Literal { kind: StrRaw(0), symbol: "R", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:33:5: 33:10 }, Literal { kind: StrRaw(2), symbol: "R", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:34:5: 34:14 }, Literal { kind: ByteStrRaw(0), symbol: "BR", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:35:5: 35:12 }, Literal { kind: ByteStrRaw(2), symbol: "BR", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:36:5: 36:16 }, Literal { kind: Char, symbol: "C", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:37:5: 37:9 }, Literal { kind: Byte, symbol: "B", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:38:5: 38:10 }]
+TokenStream [Ident { ident: "ident", span: $DIR/dump-debug-span-debug.rs:9:5: 9:10 (#0) }, Ident { ident: "r#ident", span: $DIR/dump-debug-span-debug.rs:10:5: 10:12 (#0) }, Punct { ch: ',', spacing: Alone, span: $DIR/dump-debug-span-debug.rs:11:5: 11:6 (#0) }, Punct { ch: '=', spacing: Joint, span: $DIR/dump-debug-span-debug.rs:12:5: 12:7 (#0) }, Punct { ch: '=', spacing: Joint, span: $DIR/dump-debug-span-debug.rs:12:5: 12:7 (#0) }, Punct { ch: '>', spacing: Alone, span: $DIR/dump-debug-span-debug.rs:12:7: 12:8 (#0) }, Group { delimiter: Parenthesis, stream: TokenStream [], span: $DIR/dump-debug-span-debug.rs:13:5: 13:7 (#0) }, Group { delimiter: Bracket, stream: TokenStream [Ident { ident: "_", span: $DIR/dump-debug-span-debug.rs:14:6: 14:7 (#0) }], span: $DIR/dump-debug-span-debug.rs:14:5: 14:8 (#0) }, Literal { kind: Integer, symbol: "0", suffix: None, span: $DIR/dump-debug-span-debug.rs:17:5: 17:6 (#0) }, Literal { kind: Float, symbol: "1.0", suffix: None, span: $DIR/dump-debug-span-debug.rs:18:5: 18:8 (#0) }, Literal { kind: Str, symbol: "S", suffix: None, span: $DIR/dump-debug-span-debug.rs:19:5: 19:8 (#0) }, Literal { kind: ByteStr, symbol: "B", suffix: None, span: $DIR/dump-debug-span-debug.rs:20:5: 20:9 (#0) }, Literal { kind: StrRaw(0), symbol: "R", suffix: None, span: $DIR/dump-debug-span-debug.rs:21:5: 21:9 (#0) }, Literal { kind: StrRaw(2), symbol: "R", suffix: None, span: $DIR/dump-debug-span-debug.rs:22:5: 22:13 (#0) }, Literal { kind: ByteStrRaw(0), symbol: "BR", suffix: None, span: $DIR/dump-debug-span-debug.rs:23:5: 23:11 (#0) }, Literal { kind: ByteStrRaw(2), symbol: "BR", suffix: None, span: $DIR/dump-debug-span-debug.rs:24:5: 24:15 (#0) }, Literal { kind: Char, symbol: "C", suffix: None, span: $DIR/dump-debug-span-debug.rs:25:5: 25:8 (#0) }, Literal { kind: Byte, symbol: "B", suffix: None, span: $DIR/dump-debug-span-debug.rs:26:5: 26:9 (#0) }, Literal { kind: Integer, symbol: "0", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:29:5: 29:7 (#0) }, Literal { kind: Float, symbol: "1.0", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:30:5: 30:9 (#0) }, Literal { kind: Str, symbol: "S", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:31:5: 31:9 (#0) }, Literal { kind: ByteStr, symbol: "B", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:32:5: 32:10 (#0) }, Literal { kind: StrRaw(0), symbol: "R", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:33:5: 33:10 (#0) }, Literal { kind: StrRaw(2), symbol: "R", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:34:5: 34:14 (#0) }, Literal { kind: ByteStrRaw(0), symbol: "BR", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:35:5: 35:12 (#0) }, Literal { kind: ByteStrRaw(2), symbol: "BR", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:36:5: 36:16 (#0) }, Literal { kind: Char, symbol: "C", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:37:5: 37:9 (#0) }, Literal { kind: Byte, symbol: "B", suffix: Some("q"), span: $DIR/dump-debug-span-debug.rs:38:5: 38:10 (#0) }]
 TokenStream [
     Ident {
         ident: "ident",
-        span: $DIR/dump-debug-span-debug.rs:9:5: 9:10,
+        span: $DIR/dump-debug-span-debug.rs:9:5: 9:10 (#0),
     },
     Ident {
         ident: "r#ident",
-        span: $DIR/dump-debug-span-debug.rs:10:5: 10:12,
+        span: $DIR/dump-debug-span-debug.rs:10:5: 10:12 (#0),
     },
     Punct {
         ch: ',',
         spacing: Alone,
-        span: $DIR/dump-debug-span-debug.rs:11:5: 11:6,
+        span: $DIR/dump-debug-span-debug.rs:11:5: 11:6 (#0),
     },
     Punct {
         ch: '=',
         spacing: Joint,
-        span: $DIR/dump-debug-span-debug.rs:12:5: 12:7,
+        span: $DIR/dump-debug-span-debug.rs:12:5: 12:7 (#0),
     },
     Punct {
         ch: '=',
         spacing: Joint,
-        span: $DIR/dump-debug-span-debug.rs:12:5: 12:7,
+        span: $DIR/dump-debug-span-debug.rs:12:5: 12:7 (#0),
     },
     Punct {
         ch: '>',
         spacing: Alone,
-        span: $DIR/dump-debug-span-debug.rs:12:7: 12:8,
+        span: $DIR/dump-debug-span-debug.rs:12:7: 12:8 (#0),
     },
     Group {
         delimiter: Parenthesis,
         stream: TokenStream [],
-        span: $DIR/dump-debug-span-debug.rs:13:5: 13:7,
+        span: $DIR/dump-debug-span-debug.rs:13:5: 13:7 (#0),
     },
     Group {
         delimiter: Bracket,
         stream: TokenStream [
             Ident {
                 ident: "_",
-                span: $DIR/dump-debug-span-debug.rs:14:6: 14:7,
+                span: $DIR/dump-debug-span-debug.rs:14:6: 14:7 (#0),
             },
         ],
-        span: $DIR/dump-debug-span-debug.rs:14:5: 14:8,
+        span: $DIR/dump-debug-span-debug.rs:14:5: 14:8 (#0),
     },
     Literal {
         kind: Integer,
         symbol: "0",
         suffix: None,
-        span: $DIR/dump-debug-span-debug.rs:17:5: 17:6,
+        span: $DIR/dump-debug-span-debug.rs:17:5: 17:6 (#0),
     },
     Literal {
         kind: Float,
         symbol: "1.0",
         suffix: None,
-        span: $DIR/dump-debug-span-debug.rs:18:5: 18:8,
+        span: $DIR/dump-debug-span-debug.rs:18:5: 18:8 (#0),
     },
     Literal {
         kind: Str,
         symbol: "S",
         suffix: None,
-        span: $DIR/dump-debug-span-debug.rs:19:5: 19:8,
+        span: $DIR/dump-debug-span-debug.rs:19:5: 19:8 (#0),
     },
     Literal {
         kind: ByteStr,
         symbol: "B",
         suffix: None,
-        span: $DIR/dump-debug-span-debug.rs:20:5: 20:9,
+        span: $DIR/dump-debug-span-debug.rs:20:5: 20:9 (#0),
     },
     Literal {
         kind: StrRaw(0),
         symbol: "R",
         suffix: None,
-        span: $DIR/dump-debug-span-debug.rs:21:5: 21:9,
+        span: $DIR/dump-debug-span-debug.rs:21:5: 21:9 (#0),
     },
     Literal {
         kind: StrRaw(2),
         symbol: "R",
         suffix: None,
-        span: $DIR/dump-debug-span-debug.rs:22:5: 22:13,
+        span: $DIR/dump-debug-span-debug.rs:22:5: 22:13 (#0),
     },
     Literal {
         kind: ByteStrRaw(0),
         symbol: "BR",
         suffix: None,
-        span: $DIR/dump-debug-span-debug.rs:23:5: 23:11,
+        span: $DIR/dump-debug-span-debug.rs:23:5: 23:11 (#0),
     },
     Literal {
         kind: ByteStrRaw(2),
         symbol: "BR",
         suffix: None,
-        span: $DIR/dump-debug-span-debug.rs:24:5: 24:15,
+        span: $DIR/dump-debug-span-debug.rs:24:5: 24:15 (#0),
     },
     Literal {
         kind: Char,
         symbol: "C",
         suffix: None,
-        span: $DIR/dump-debug-span-debug.rs:25:5: 25:8,
+        span: $DIR/dump-debug-span-debug.rs:25:5: 25:8 (#0),
     },
     Literal {
         kind: Byte,
         symbol: "B",
         suffix: None,
-        span: $DIR/dump-debug-span-debug.rs:26:5: 26:9,
+        span: $DIR/dump-debug-span-debug.rs:26:5: 26:9 (#0),
     },
     Literal {
         kind: Integer,
         symbol: "0",
         suffix: Some("q"),
-        span: $DIR/dump-debug-span-debug.rs:29:5: 29:7,
+        span: $DIR/dump-debug-span-debug.rs:29:5: 29:7 (#0),
     },
     Literal {
         kind: Float,
         symbol: "1.0",
         suffix: Some("q"),
-        span: $DIR/dump-debug-span-debug.rs:30:5: 30:9,
+        span: $DIR/dump-debug-span-debug.rs:30:5: 30:9 (#0),
     },
     Literal {
         kind: Str,
         symbol: "S",
         suffix: Some("q"),
-        span: $DIR/dump-debug-span-debug.rs:31:5: 31:9,
+        span: $DIR/dump-debug-span-debug.rs:31:5: 31:9 (#0),
     },
     Literal {
         kind: ByteStr,
         symbol: "B",
         suffix: Some("q"),
-        span: $DIR/dump-debug-span-debug.rs:32:5: 32:10,
+        span: $DIR/dump-debug-span-debug.rs:32:5: 32:10 (#0),
     },
     Literal {
         kind: StrRaw(0),
         symbol: "R",
         suffix: Some("q"),
-        span: $DIR/dump-debug-span-debug.rs:33:5: 33:10,
+        span: $DIR/dump-debug-span-debug.rs:33:5: 33:10 (#0),
     },
     Literal {
         kind: StrRaw(2),
         symbol: "R",
         suffix: Some("q"),
-        span: $DIR/dump-debug-span-debug.rs:34:5: 34:14,
+        span: $DIR/dump-debug-span-debug.rs:34:5: 34:14 (#0),
     },
     Literal {
         kind: ByteStrRaw(0),
         symbol: "BR",
         suffix: Some("q"),
-        span: $DIR/dump-debug-span-debug.rs:35:5: 35:12,
+        span: $DIR/dump-debug-span-debug.rs:35:5: 35:12 (#0),
     },
     Literal {
         kind: ByteStrRaw(2),
         symbol: "BR",
         suffix: Some("q"),
-        span: $DIR/dump-debug-span-debug.rs:36:5: 36:16,
+        span: $DIR/dump-debug-span-debug.rs:36:5: 36:16 (#0),
     },
     Literal {
         kind: Char,
         symbol: "C",
         suffix: Some("q"),
-        span: $DIR/dump-debug-span-debug.rs:37:5: 37:9,
+        span: $DIR/dump-debug-span-debug.rs:37:5: 37:9 (#0),
     },
     Literal {
         kind: Byte,
         symbol: "B",
         suffix: Some("q"),
-        span: $DIR/dump-debug-span-debug.rs:38:5: 38:10,
+        span: $DIR/dump-debug-span-debug.rs:38:5: 38:10 (#0),
     },
 ]
diff --git a/src/test/ui/rfc-2091-track-caller/call-chain.rs b/src/test/ui/rfc-2091-track-caller/call-chain.rs
new file mode 100644
index 00000000000..3f1c8f7abe8
--- /dev/null
+++ b/src/test/ui/rfc-2091-track-caller/call-chain.rs
@@ -0,0 +1,28 @@
+// run-pass
+
+#![feature(track_caller)]
+
+use std::panic::Location;
+
+struct Foo;
+
+impl Foo {
+    #[track_caller]
+    fn check_loc(&self, line: u32, col: u32) -> &Self {
+        let loc = Location::caller();
+        assert_eq!(loc.file(), file!(), "file mismatch");
+        assert_eq!(loc.line(), line, "line mismatch");
+        assert_eq!(loc.column(), col, "column mismatch");
+        self
+    }
+}
+
+fn main() {
+    // Tests that when `Location::caller` is used in a method chain,
+    // it points to the start of the correct call (the first character after the dot)
+    // instead of to the very first expression in the chain
+    let foo = Foo;
+    foo.
+        check_loc(line!(), 9).check_loc(line!(), 31)
+        .check_loc(line!(), 10);
+}