Index: lib/sanitizer_common/sanitizer_mac.cc =================================================================== --- lib/sanitizer_common/sanitizer_mac.cc +++ lib/sanitizer_common/sanitizer_mac.cc @@ -102,9 +102,15 @@ extern "C" int __munmap(void *, size_t) SANITIZER_WEAK_ATTRIBUTE; // ---------------------- sanitizer_libc.h + +// From , but not on older OSs. +#ifndef VM_MEMORY_SANITIZER +#define VM_MEMORY_SANITIZER 99 +#endif + uptr internal_mmap(void *addr, size_t length, int prot, int flags, int fd, u64 offset) { - if (fd == -1) fd = VM_MAKE_TAG(VM_MEMORY_ANALYSIS_TOOL); + if (fd == -1) fd = VM_MAKE_TAG(VM_MEMORY_SANITIZER); if (&__mmap) return (uptr)__mmap(addr, length, prot, flags, fd, offset); return (uptr)mmap(addr, length, prot, flags, fd, offset); }