1diff --git third_party/blink/renderer/platform/heap/thread_local.h third_party/blink/renderer/platform/heap/thread_local.h 2index 84ef4350bd96d..dbd5b0b73ebb2 100644 3--- third_party/blink/renderer/platform/heap/thread_local.h 4+++ third_party/blink/renderer/platform/heap/thread_local.h 5@@ -36,7 +36,7 @@ 6 #if BLINK_HEAP_HIDE_THREAD_LOCAL_IN_LIBRARY 7 #define BLINK_HEAP_THREAD_LOCAL_MODEL "local-dynamic" 8 #else 9-#if defined(OS_WIN) 10+#if defined(OS_WIN) || (defined(OS_POSIX) && !defined(OS_MAC)) 11 #define BLINK_HEAP_THREAD_LOCAL_MODEL "initial-exec" 12 #elif defined(OS_ANDROID) 13 #define BLINK_HEAP_THREAD_LOCAL_MODEL "local-dynamic" 14