1 files changed, 10 insertions, 0 deletions
diff --git a/deps/v8/src/common/ptr-compr-inl.h b/deps/v8/src/common/ptr-compr-inl.h
index 75ea2e069fc..18989303198 100644
--- a/deps/v8/src/common/ptr-compr-inl.h
+++ b/deps/v8/src/common/ptr-compr-inl.h
@@ -8,6 +8,7 @@
 #include "include/v8-internal.h"
 #include "src/common/ptr-compr.h"
 #include "src/execution/isolate.h"
+#include "src/execution/off-thread-isolate-inl.h"
 
 namespace v8 {
 namespace internal {
@@ -36,6 +37,15 @@ V8_INLINE Address GetIsolateRoot(const Isolate* isolate) {
   return isolate_root;
 }
 
+V8_INLINE Address GetIsolateRoot(const OffThreadIsolate* isolate) {
+  Address isolate_root = isolate->isolate_root();
+#ifdef V8_COMPRESS_POINTERS
+  isolate_root = reinterpret_cast<Address>(V8_ASSUME_ALIGNED(
+      reinterpret_cast<void*>(isolate_root), kPtrComprIsolateRootAlignment));
+#endif
+  return isolate_root;
+}
+
 // Decompresses smi value.
 V8_INLINE Address DecompressTaggedSigned(Tagged_t raw_value) {
   // For runtime code the upper 32-bits of the Smi value do not matter.