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Correctly gate the parsing of match arms without body

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Nadrieril
2023-12-12 13:33:39 +01:00
parent 21cce21d8c
commit e274372689
9 changed files with 227 additions and 26 deletions
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7
compiler/rustc_ast_lowering/src/expr.rs
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@@ -581,8 +581,11 @@ impl<'hir> LoweringContext<'_, 'hir> {
} else {
// Either `body.is_none()` or `is_never_pattern` here.
if !is_never_pattern {
let suggestion = span.shrink_to_hi();
self.tcx.sess.emit_err(MatchArmWithNoBody { span, suggestion });
if self.tcx.features().never_patterns {
// If the feature is off we already emitted the error after parsing.
let suggestion = span.shrink_to_hi();
self.tcx.sess.emit_err(MatchArmWithNoBody { span, suggestion });
}
} else if let Some(body) = &arm.body {
self.tcx.sess.emit_err(NeverPatternWithBody { span: body.span });
guard = None;