8277212: GC accidentally cleans valid megamorphic vtable inline caches

Reviewed-by: eosterlund, pliden, coleenp, thartmann
openjdk · Nov 19, 2021 · 976c2bb · 976c2bb · openjdk-notifier · Nov 19, 2021
1 parent 03f8c0f
commit 976c2bb
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/hotspot/share/code/compiledMethod.cpp b/src/hotspot/share/code/compiledMethod.cpp
@@ -478,6 +478,10 @@ bool CompiledMethod::clean_ic_if_metadata_is_dead(CompiledIC *ic) {
       } else {
         ShouldNotReachHere();
       }
+    } else {
+      // This inline cache is a megamorphic vtable call. Those ICs never hold
+      // any Metadata and should therefore never be cleaned by this function.
+      return true;
     }
   }