diff options
Diffstat (limited to 'compiler/rustc_errors/src/lib.rs')
| -rw-r--r-- | compiler/rustc_errors/src/lib.rs | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/compiler/rustc_errors/src/lib.rs b/compiler/rustc_errors/src/lib.rs index b747a62b864..665b5d6adec 100644 --- a/compiler/rustc_errors/src/lib.rs +++ b/compiler/rustc_errors/src/lib.rs @@ -1376,16 +1376,16 @@ impl HandlerInner { self.emitted_diagnostic_codes.insert(code.clone()); } - let already_emitted = |this: &mut Self| { + let already_emitted = { let mut hasher = StableHasher::new(); diagnostic.hash(&mut hasher); let diagnostic_hash = hasher.finish(); - !this.emitted_diagnostics.insert(diagnostic_hash) + !self.emitted_diagnostics.insert(diagnostic_hash) }; // Only emit the diagnostic if we've been asked to deduplicate or // haven't already emitted an equivalent diagnostic. - if !(self.flags.deduplicate_diagnostics && already_emitted(self)) { + if !(self.flags.deduplicate_diagnostics && already_emitted) { debug!(?diagnostic); debug!(?self.emitted_diagnostics); let already_emitted_sub = |sub: &mut SubDiagnostic| { @@ -1401,6 +1401,11 @@ impl HandlerInner { }; diagnostic.children.extract_if(already_emitted_sub).for_each(|_| {}); + if already_emitted { + diagnostic.note( + "duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`", + ); + } self.emitter.emit_diagnostic(diagnostic); if diagnostic.is_error() { |