Fix ICE when opaque captures a duplicated/invalid lifetime

1 files changed, 4 insertions, 1 deletions

diff --git a/compiler/rustc_hir_analysis/src/check/wfcheck.rs b/compiler/rustc_hir_analysis/src/check/wfcheck.rs
index 3cddc9642ba..efffb24c81d 100644
--- a/compiler/rustc_hir_analysis/src/check/wfcheck.rs
+++ b/compiler/rustc_hir_analysis/src/check/wfcheck.rs
@@ -2007,7 +2007,10 @@ fn check_variances_for_type_defn<'tcx>(
         }
 
         match hir_param.name {
-            hir::ParamName::Error => {}
+            hir::ParamName::Error(_) => {
+                // Don't report a bivariance error for a lifetime that isn't
+                // even valid to name.
+            }
             _ => {
                 let has_explicit_bounds = explicitly_bounded_params.contains(&parameter);
                 report_bivariance(tcx, hir_param, has_explicit_bounds, item);