[tsan] Skip malloc/free interceptors when we're inside symbolizer on OS X

[kubamracek]

Summary

Symbolizers can call malloc/realloc/free/..., which we don't want to intercept. This is already implemented on Linux, let's do it for OS X as well.

compiler-rt/trunk/lib/tsan/rtl/tsan_malloc_mac.cc

 #define COMMON_MALLOC_ENTER()
 #define COMMON_MALLOC_SANITIZER_INITIALIZED (cur_thread()->is_inited)
 #define COMMON_MALLOC_FORCE_LOCK()
 #define COMMON_MALLOC_FORCE_UNLOCK()
 #define COMMON_MALLOC_MEMALIGN(alignment, size) \
   void *p =                                     \
       user_alloc(cur_thread(), StackTrace::GetCurrentPc(), size, alignment)
 #define COMMON_MALLOC_MALLOC(size)      \
+  if (cur_thread()->in_symbolizer)      \
+    return REAL(malloc)(size);          \
   SCOPED_INTERCEPTOR_RAW(malloc, size); \
   void *p = user_alloc(thr, pc, size)
-#define COMMON_MALLOC_REALLOC(ptr, size) \
+#define COMMON_MALLOC_REALLOC(ptr, size)      \
+  if (cur_thread()->in_symbolizer)            \
+    return REAL(realloc)(ptr, size);          \
   SCOPED_INTERCEPTOR_RAW(realloc, ptr, size); \
-  void *p = user_realloc(thr, pc, ptr, size);
-#define COMMON_MALLOC_CALLOC(count, size) \
+  void *p = user_realloc(thr, pc, ptr, size)
+#define COMMON_MALLOC_CALLOC(count, size)      \
+  if (cur_thread()->in_symbolizer)             \
+    return REAL(calloc)(count, size);          \
   SCOPED_INTERCEPTOR_RAW(calloc, size, count); \
-  void *p = user_calloc(thr, pc, size, count);
-#define COMMON_MALLOC_VALLOC(size) \
-  SCOPED_INTERCEPTOR_RAW(valloc, size); \
-  void *p = user_alloc(thr, pc, size, GetPageSizeCached());
-#define COMMON_MALLOC_FREE(ptr) \
+  void *p = user_calloc(thr, pc, size, count)
+#define COMMON_MALLOC_VALLOC(size)                          \
+  if (cur_thread()->in_symbolizer)                          \
+    return REAL(valloc)(size);                              \
+  SCOPED_INTERCEPTOR_RAW(valloc, size);                     \
+  void *p = user_alloc(thr, pc, size, GetPageSizeCached())
+#define COMMON_MALLOC_FREE(ptr)      \
+  if (cur_thread()->in_symbolizer)   \
+    return REAL(free)(ptr);          \
   SCOPED_INTERCEPTOR_RAW(free, ptr); \
-  user_free(thr, pc, ptr);
+  user_free(thr, pc, ptr)
 #define COMMON_MALLOC_SIZE(ptr) \
   uptr size = user_alloc_usable_size(ptr);
 #define COMMON_MALLOC_FILL_STATS(zone, stats)
 #define COMMON_MALLOC_REPORT_UNKNOWN_REALLOC(ptr, zone_ptr, zone_name) \
   (void)zone_name; \
   Report("mz_realloc(%p) -- attempting to realloc unallocated memory.\n", ptr);
 #define COMMON_MALLOC_IGNORE_INVALID_FREE false
 #define COMMON_MALLOC_REPORT_FREE_UNALLOCATED(ptr, zone_ptr, zone_name) \
   (void)zone_name; \
   Report("free_common(%p) -- attempting to free unallocated memory.\n", ptr);
 #define COMMON_MALLOC_NAMESPACE __tsan
 
 #include "sanitizer_common/sanitizer_malloc_mac.inc"
 
 #endif