shell_crash.patch

diff --git a/src/third_party/v8/src/spaces.h b/src/third_party/v8/src/spaces.h
index 6602c89..d7a79c6 100644
--- a/src/third_party/v8/src/spaces.h
+++ b/src/third_party/v8/src/spaces.h
@@ -321,7 +321,8 @@ class MemoryChunk {
   Space* owner() const {
     if ((reinterpret_cast<intptr_t>(owner_) & kFailureTagMask) ==
         kFailureTag) {
-      return reinterpret_cast<Space*>(owner_ - kFailureTag);
+      return reinterpret_cast<Space*>(reinterpret_cast<intptr_t>(owner_) -
+                                      kFailureTag);
     } else {
       return NULL;
     }