bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

Account for union

Browse source
This commit is contained in:
Hirochika Matsumoto 2021-01-30 14:18:50 +09:00
parent 08d31e0f09
commit 2ce2d145c2
4 changed files with 50 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

9
compiler/rustc_infer/src/infer/error_reporting/mod.rs
View file

@ -1842,13 +1842,20 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> {
{
if let ObligationCauseCode::Pattern { span: Some(span), .. } = cause.code {
if let Ok(snippet) = self.tcx.sess.source_map().span_to_snippet(span) {
let suggestion = if expected_def.is_struct() {
format!("{}.{}", snippet, name)
} else if expected_def.is_union() {
format!("unsafe {{ {}.{} }}", snippet, name)
} else {
return;
};
diag.span_suggestion(
span,
&format!(
"you might have meant to use field `{}` of type `{}`",
name, ty
),
format!("{}.{}", snippet, name),
suggestion,
Applicability::MaybeIncorrect,
);
}