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Give a more useful location for where a span_bug was delayed 

Before:
```
   = note: delayed at    0: <rustc_errors::HandlerInner>::emit_diagnostic
                        at ./compiler/rustc_errors/src/lib.rs:1335:29
              1: <rustc_errors::Handler>::emit_diagnostic
                        at ./compiler/rustc_errors/src/lib.rs:1124:9
...
```

After:
```
   = note: delayed at compiler/rustc_parse/src/parser/diagnostics.rs:2158:28
              0: <rustc_errors::HandlerInner>::emit_diagnostic
                        at ./compiler/rustc_errors/src/lib.rs:1335:29
              1: <rustc_errors::Handler>::emit_diagnostic
                        at ./compiler/rustc_errors/src/lib.rs:1124:9
```

This both makes the relevant frame easier to find without having to dig
through diagnostic internals, and avoids the weird-looking formatting
for the first frame.
This commit is contained in:
jyn 2023-05-17 23:15:22 -05:00
parent 24c180c438
commit e6a7fdedd7
2 changed files with 2 additions and 1 deletions
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2
compiler/rustc_errors/src/lib.rs
View File

@ -1740,7 +1740,7 @@ impl DelayedDiagnostic {
}
fn decorate(mut self) -> Diagnostic {
self.inner.note(format!("delayed at {}", self.note));
self.inner.note(format!("delayed at {}\n{}", self.inner.emitted_at, self.note));
self.inner
}
}

1
compiler/rustc_parse/src/parser/diagnostics.rs
View File

@ -238,6 +238,7 @@ impl<'a> DerefMut for SnapshotParser<'a> {
impl<'a> Parser<'a> {
#[rustc_lint_diagnostics]
#[track_caller]
pub fn struct_span_err<S: Into<MultiSpan>>(
&self,
sp: S,