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Tweak duplicate matcher binding error

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This commit is contained in:
Esteban Küber 2019-11-25 12:34:56 -08:00
parent 1eeed17c9e
commit 3893d16341
2 changed files with 14 additions and 29 deletions
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3
src/libsyntax_expand/mbe/macro_check.rs
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@ -269,7 +269,8 @@ fn check_binders(
// for nested macro definitions.
sess.span_diagnostic
.struct_span_err(span, "duplicate matcher binding")
.span_note(prev_info.span, "previous declaration was here")
.span_label(span, "duplicate binding")
.span_label(prev_info.span, "previous binding")
.emit();
*valid = false;
} else {

40
src/test/ui/macros/macro-multiple-matcher-bindings.stderr
View File

@ -2,49 +2,33 @@ error: duplicate matcher binding
--> $DIR/macro-multiple-matcher-bindings.rs:7:16
|
LL | ($a:ident, $a:ident) => {};
| ^^^^^^^^
|
note: previous declaration was here
--> $DIR/macro-multiple-matcher-bindings.rs:7:6
|
LL | ($a:ident, $a:ident) => {};
| ^^^^^^^^
| -------- ^^^^^^^^ duplicate binding
| |
| previous binding
error: duplicate matcher binding
--> $DIR/macro-multiple-matcher-bindings.rs:8:16
|
LL | ($a:ident, $a:path) => {};
| ^^^^^^^
|
note: previous declaration was here
--> $DIR/macro-multiple-matcher-bindings.rs:8:6
|
LL | ($a:ident, $a:path) => {};
| ^^^^^^^^
| -------- ^^^^^^^ duplicate binding
| |
| previous binding
error: duplicate matcher binding
--> $DIR/macro-multiple-matcher-bindings.rs:17:18
|
LL | ($a:ident, $($a:ident),*) => {};
| ^^^^^^^^
|
note: previous declaration was here
--> $DIR/macro-multiple-matcher-bindings.rs:17:6
|
LL | ($a:ident, $($a:ident),*) => {};
| ^^^^^^^^
| -------- ^^^^^^^^ duplicate binding
| |
| previous binding
error: duplicate matcher binding
--> $DIR/macro-multiple-matcher-bindings.rs:18:25
|
LL | ($($a:ident)+ # $($($a:path),+);*) => {};
| ^^^^^^^
|
note: previous declaration was here
--> $DIR/macro-multiple-matcher-bindings.rs:18:8
|
LL | ($($a:ident)+ # $($($a:path),+);*) => {};
| ^^^^^^^^
| -------- ^^^^^^^ duplicate binding
| |
| previous binding
error: aborting due to 4 previous errors