[compiler-rt] r348481 - Add new `__sanitizer_mz_default_zone()` API which returns the address of the ASan malloc zone. This API will be used for testing in future patches.

[Dan Liew via llvm-commits]

Author: delcypher
Date: Thu Dec  6 04:39:00 2018
New Revision: 348481

URL: http://llvm.org/viewvc/llvm-project?rev=348481&view=rev
Log:
Add new `__sanitizer_mz_default_zone()` API which returns the address of the ASan malloc zone. This API will be used for testing in future patches.

Summary:
The name of the function is based on `malloc_default_zone()` found
in Darwin's `malloc/malloc.h` header file.

Reviewers: kubamracek, george.karpenkov

Subscribers: #sanitizers, llvm-commits

Differential Revision: https://reviews.llvm.org/D55064

Modified:
    compiler-rt/trunk/lib/sanitizer_common/sanitizer_malloc_mac.inc

Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_malloc_mac.inc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_malloc_mac.inc?rev=348481&r1=348480&r2=348481&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_malloc_mac.inc (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_malloc_mac.inc Thu Dec  6 04:39:00 2018
@@ -265,6 +265,13 @@ void *__sanitizer_mz_memalign(malloc_zon
   return p;
 }
 
+// This public API exists purely for testing purposes.
+extern "C"
+SANITIZER_INTERFACE_ATTRIBUTE
+malloc_zone_t* __sanitizer_mz_default_zone() {
+  return &sanitizer_zone;
+}
+
 // This function is currently unused, and we build with -Werror.
 #if 0
 void __sanitizer_mz_free_definite_size(