[ASan] Retire mac_ignore_invalid_free, remove some dead code.

mac_ignore_invalid_free was helpful when ASan runtime used to intercept
CFAllocator and sometimes corrupted its memory. This behavior had been long
gone, and the flag was unused.
This patch also deletes ReportMacCfReallocUnknown(), which was used by the
CFAllocator realloc() wrapper.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@254722 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 16 deletions

diff --git a/lib/sanitizer_common/sanitizer_malloc_mac.inc b/lib/sanitizer_common/sanitizer_malloc_mac.inc
index 17d3a1349..468696a0d 100644
--- a/lib/sanitizer_common/sanitizer_malloc_mac.inc
+++ b/lib/sanitizer_common/sanitizer_malloc_mac.inc
@@ -184,28 +184,18 @@ void *__sanitizer_mz_valloc(malloc_zone_t *zone, size_t size) {
   return p;
 }
 
-#define GET_ZONE_FOR_PTR(ptr) \
-  malloc_zone_t *zone_ptr = malloc_zone_from_ptr(ptr); \
-  const char *zone_name = (zone_ptr == 0) ? 0 : zone_ptr->zone_name
-
-void ALWAYS_INLINE free_common(void *context, void *ptr) {
-  if (!ptr) return;
-  // FIXME: need to retire this flag.
-  if (!COMMON_MALLOC_IGNORE_INVALID_FREE) {
-    COMMON_MALLOC_FREE(ptr);
-  } else {
-    GET_ZONE_FOR_PTR(ptr);
-    COMMON_MALLOC_REPORT_FREE_UNALLOCATED(ptr, zone_ptr, zone_name);
-  }
-}
-
 // TODO(glider): the allocation callbacks need to be refactored.
 extern "C"
 SANITIZER_INTERFACE_ATTRIBUTE
 void __sanitizer_mz_free(malloc_zone_t *zone, void *ptr) {
-  free_common(zone, ptr);
+  if (!ptr) return;
+  COMMON_MALLOC_FREE(ptr);
 }
 
+#define GET_ZONE_FOR_PTR(ptr) \
+  malloc_zone_t *zone_ptr = malloc_zone_from_ptr(ptr); \
+  const char *zone_name = (zone_ptr == 0) ? 0 : zone_ptr->zone_name
+
 extern "C"
 SANITIZER_INTERFACE_ATTRIBUTE
 void *__sanitizer_mz_realloc(malloc_zone_t *zone, void *ptr, size_t new_size) {