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Auto merge of #117297 - clubby789:fn-trait-missing-paren, r=TaKO8Ki
Give a better diagnostic for missing parens in Fn* bounds Fixes #108109 It would be nice to try and recover here, but I'm not sure it's worth the effort, especially as the bounds on the recovered function would be incorrect.
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Original file line number | Diff line number | Diff line change |
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@@ -194,6 +194,9 @@ symbols! { | |
Error, | ||
File, | ||
FileType, | ||
Fn, | ||
FnMut, | ||
FnOnce, | ||
FormatSpec, | ||
Formatter, | ||
From, | ||
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8 changes: 8 additions & 0 deletions
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tests/ui/parser/issues/issue-108109-fn-trait-missing-paren.fixed
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@@ -0,0 +1,8 @@ | ||
// run-rustfix | ||
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pub fn func<F>() where F: FnOnce() -> () {} | ||
//~^ ERROR expected one of | ||
//~| NOTE expected one of | ||
//~| NOTE `Fn` bounds require arguments in parentheses | ||
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fn main() {} |
8 changes: 8 additions & 0 deletions
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tests/ui/parser/issues/issue-108109-fn-trait-missing-paren.rs
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// run-rustfix | ||
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pub fn func<F>() where F: FnOnce -> () {} | ||
//~^ ERROR expected one of | ||
//~| NOTE expected one of | ||
//~| NOTE `Fn` bounds require arguments in parentheses | ||
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fn main() {} |
11 changes: 11 additions & 0 deletions
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tests/ui/parser/issues/issue-108109-fn-trait-missing-paren.stderr
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error: expected one of `(`, `+`, `,`, `::`, `<`, or `{`, found `->` | ||
--> $DIR/issue-108109-fn-trait-missing-paren.rs:3:34 | ||
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LL | pub fn func<F>() where F: FnOnce -> () {} | ||
| -------^^ expected one of `(`, `+`, `,`, `::`, `<`, or `{` | ||
| | | | ||
| | help: try adding parentheses | ||
| `Fn` bounds require arguments in parentheses | ||
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error: aborting due to previous error | ||
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