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On Darwin switch from the `VM_MEMORY_ANALYSIS_TOOL` VM tag to 

`VM_MEMORY_SANITIZER`.

It turns out that `VM_MEMORY_ANALYSIS_TOOL` is already reserved for
use by other tools so switch to a tag reserved for use by the Sanitizers.

rdar://problem/41969783

Differential Revision: https://reviews.llvm.org/D49603

llvm-svn: 337579
This commit is contained in:
Dan Liew 2018-07-20 17:07:35 +00:00
parent 70fcd0f481
commit c358e51e9b
1 changed files with 7 additions and 1 deletions
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8
compiler-rt/lib/sanitizer_common/sanitizer_mac.cc
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@ -102,9 +102,15 @@ extern "C" void *__mmap(void *addr, size_t len, int prot, int flags, int fildes,
extern "C" int __munmap(void *, size_t) SANITIZER_WEAK_ATTRIBUTE;
// ---------------------- sanitizer_libc.h
// From <mach/vm_statistics.h>, 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);
}