formatted docs stderr | method-output-diff-issue-127263.rs

Author: Kivooeo

tests/ui/mismatched_types/fn-pointer-mismatch-diagnostics.rs

@@ -1,7 +1,15 @@
+//! This test checks that when there's a type mismatch between a function item and
+//! a function pointer, the error message focuses on the actual type difference
+//! (return types, argument types) rather than the confusing "pointer vs item" distinction.
+//!
+//! See https://github.com/rust-lang/rust/issues/127263
+
 fn bar() {}
+
 fn foo(x: i32) -> u32 {
     0
 }
+
 fn main() {
     let b: fn() -> u32 = bar; //~ ERROR mismatched types [E0308]
     let f: fn(i32) = foo; //~ ERROR mismatched types [E0308]

tests/ui/mismatched_types/fn-pointer-mismatch-diagnostics.stderr

@@ -1,5 +1,5 @@
 error[E0308]: mismatched types
-  --> $DIR/method-output-diff-issue-127263.rs:6:26
+  --> $DIR/fn-pointer-mismatch-diagnostics.rs:14:26
    |
 LL |     let b: fn() -> u32 = bar;
    |            -----------   ^^^ expected fn pointer, found fn item
@@ -10,7 +10,7 @@ LL |     let b: fn() -> u32 = bar;
                  found fn item `fn() -> () {bar}`
 
 error[E0308]: mismatched types
-  --> $DIR/method-output-diff-issue-127263.rs:7:22
+  --> $DIR/fn-pointer-mismatch-diagnostics.rs:15:22
    |
 LL |     let f: fn(i32) = foo;
    |            -------   ^^^ expected fn pointer, found fn item