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Don't ICE when computing a layout of a generator tainted by errors

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This commit is contained in:
Tomasz Miąsko 2021-01-14 00:00:00 +00:00
parent a4f022e109
commit 5ea1d0e865
6 changed files with 50 additions and 8 deletions
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5
compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
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@ -1832,8 +1832,9 @@ impl<'tcx> VariantInfo<'_, 'tcx> {
fn source_info(&self, cx: &CodegenCx<'ll, 'tcx>) -> Option<SourceInfo<'ll>> {
match self {
VariantInfo::Generator { def_id, variant_index, .. } => {
let span =
cx.tcx.generator_layout(*def_id).variant_source_info[*variant_index].span;
let span = cx.tcx.generator_layout(*def_id).unwrap().variant_source_info
[*variant_index]
.span;
if !span.is_dummy() {
let loc = cx.lookup_debug_loc(span.lo());
return Some(SourceInfo {