[clang/CompileJobCache] Fix UBSan issue

(cherry picked from commit f7cd52a)
cyndyishida · Aug 25, 2023 · eacdc31 · eacdc31
1 parent 1c7f71c
commit eacdc31
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/clang/lib/Frontend/CompileJobCache.cpp b/clang/lib/Frontend/CompileJobCache.cpp
@@ -87,7 +87,8 @@ class ObjectStoreCachingOutputs : public CompileJobCache::CachingOutputs {
                        UseCASBackend),
         ComputedJobNeedsReplay(WriteOutputAsCASID || UseCASBackend),
         MCOutputID(MCOutputID), CAS(std::move(DB)), Cache(std::move(Cache)) {
-    CASOutputs = llvm::makeIntrusiveRefCnt<llvm::cas::CASOutputBackend>(*CAS);
+    if (CAS)
+      CASOutputs = llvm::makeIntrusiveRefCnt<llvm::cas::CASOutputBackend>(*CAS);
   }
 
   Expected<std::optional<int>>