Index: compiler-rt/lib/sanitizer_common/sanitizer_platform.h
===================================================================
--- compiler-rt/lib/sanitizer_common/sanitizer_platform.h
+++ compiler-rt/lib/sanitizer_common/sanitizer_platform.h
@@ -286,9 +286,10 @@
 #ifndef SANITIZER_CAN_USE_ALLOCATOR64
 #  if (SANITIZER_ANDROID && defined(__aarch64__)) || SANITIZER_FUCHSIA
 #    define SANITIZER_CAN_USE_ALLOCATOR64 1
-#  elif defined(__mips64) || defined(__arm__) || defined(__i386__) || \
-      SANITIZER_RISCV64 || defined(__hexagon__) || \
-      (SANITIZER_APPLE && defined(__aarch64__))
+# elif (SANITIZER_APPLE && defined(__aarch64__)) && !SANITIZER_OSX
+#    define SANITIZER_CAN_USE_ALLOCATOR64 0
+# elif defined(__mips64) || defined(__arm__) || defined(__i386__) || \
+      SANITIZER_RISCV64 || defined(__hexagon__)
 #    define SANITIZER_CAN_USE_ALLOCATOR64 0
 #  else
 #    define SANITIZER_CAN_USE_ALLOCATOR64 (SANITIZER_WORDSIZE == 64)