diff options
| -rw-r--r-- | compiler/rustc_mir_build/messages.ftl | 3 | ||||
| -rw-r--r-- | compiler/rustc_mir_build/src/errors.rs | 4 | ||||
| -rw-r--r-- | compiler/rustc_mir_build/src/thir/pattern/check_match.rs | 3 |
3 files changed, 9 insertions, 1 deletions
diff --git a/compiler/rustc_mir_build/messages.ftl b/compiler/rustc_mir_build/messages.ftl index cb265cf2c6a..98156840dd8 100644 --- a/compiler/rustc_mir_build/messages.ftl +++ b/compiler/rustc_mir_build/messages.ftl @@ -214,6 +214,9 @@ mir_build_mutation_of_layout_constrained_field_requires_unsafe_unsafe_op_in_unsa mir_build_non_const_path = runtime values cannot be referenced in patterns +mir_build_non_exhaustive_match_all_arms_guarded = + match arms with guards don't count towards exhaustivity + mir_build_non_exhaustive_omitted_pattern = some variants are not matched explicitly .help = ensure that all variants are matched explicitly by adding the suggested match arms .note = the matched value is of type `{$scrut_ty}` and the `non_exhaustive_omitted_patterns` attribute was found diff --git a/compiler/rustc_mir_build/src/errors.rs b/compiler/rustc_mir_build/src/errors.rs index 7c0df201bc2..df00cc75cc7 100644 --- a/compiler/rustc_mir_build/src/errors.rs +++ b/compiler/rustc_mir_build/src/errors.rs @@ -432,6 +432,10 @@ impl<'a> IntoDiagnostic<'a> for NonExhaustivePatternsTypeNotEmpty<'_, '_, '_> { } } +#[derive(Subdiagnostic)] +#[note(mir_build_non_exhaustive_match_all_arms_guarded)] +pub struct NonExhaustiveMatchAllArmsGuarded; + #[derive(Diagnostic)] #[diag(mir_build_static_in_pattern, code = "E0158")] pub struct StaticInPattern { diff --git a/compiler/rustc_mir_build/src/thir/pattern/check_match.rs b/compiler/rustc_mir_build/src/thir/pattern/check_match.rs index ff0dcdd2d1b..73d8f456dc3 100644 --- a/compiler/rustc_mir_build/src/thir/pattern/check_match.rs +++ b/compiler/rustc_mir_build/src/thir/pattern/check_match.rs @@ -833,7 +833,8 @@ fn non_exhaustive_match<'p, 'tcx>( let all_arms_have_guards = arms.iter().all(|arm_id| thir[*arm_id].guard.is_some()); if !is_empty_match && all_arms_have_guards { - err.note("match arms with guards don't count towards exhaustivity"); + err.subdiagnostic(NonExhaustiveMatchAllArmsGuarded); + // err.note(NonExhaustiveMatchAllArmsGuarded); } if let Some((span, sugg)) = suggestion { err.span_suggestion_verbose(span, msg, sugg, Applicability::HasPlaceholders); |