From 5ea1d0e865e3a15c054233198622b711ed0b5f86 Mon Sep 17 00:00:00 2001
From: Tomasz Miąsko <tomasz.miasko@gmail.com>
Date: Thu, 14 Jan 2021 00:00:00 +0000
Subject: Don't ICE when computing a layout of a generator tainted by errors

---
 compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'compiler/rustc_codegen_llvm/src')

diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
index 36a21b38c03..b9ae7963250 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
@@ -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 {
-- 
cgit 1.4.1-3-g733a5