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Fix ICE in check_must_not_suspend_ty()

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This commit is contained in:
Fabian Wolff 2021-12-05 22:24:34 +01:00
parent 772d51f887
commit a8daff2724
3 changed files with 75 additions and 9 deletions
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24
compiler/rustc_typeck/src/check/generator_interior.rs
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@ -536,22 +536,28 @@ pub fn check_must_not_suspend_ty<'tcx>(
}
has_emitted
}
ty::Tuple(ref tys) => {
ty::Tuple(_) => {
let mut has_emitted = false;
let spans = if let Some(hir::ExprKind::Tup(comps)) = data.expr.map(|e| &e.kind) {
debug_assert_eq!(comps.len(), tys.len());
comps.iter().map(|e| e.span).collect()
} else {
vec![]
let comps = match data.expr.map(|e| &e.kind) {
Some(hir::ExprKind::Tup(comps)) => {
debug_assert_eq!(comps.len(), ty.tuple_fields().count());
Some(comps)
}
_ => None,
};
for (i, ty) in tys.iter().map(|k| k.expect_ty()).enumerate() {
for (i, ty) in ty.tuple_fields().enumerate() {
let descr_post = &format!(" in tuple element {}", i);
let span = *spans.get(i).unwrap_or(&data.source_span);
let span = comps.and_then(|c| c.get(i)).map(|e| e.span).unwrap_or(data.source_span);
if check_must_not_suspend_ty(
fcx,
ty,
hir_id,
SuspendCheckData { descr_post, source_span: span, ..data },
SuspendCheckData {
descr_post,
expr: comps.and_then(|comps| comps.get(i)),
source_span: span,
..data
},
) {
has_emitted = true;
}