# HG changeset patch
# User Dhiru Kholia <dhiru@openwall.com>
# Date 1380113148 -19800
#      Wed Sep 25 18:15:48 2013 +0530
# Node ID 4303561b4a1ff68c9ed5ea369923cbd07d78bad5
# Parent  35da5d848ffdc68ecf65e5dc60ed1771e66fa3b7
Enable usage of AddressSanitizer in CPython

diff -r 35da5d848ffd -r 4303561b4a1f Objects/obmalloc.c
--- a/Objects/obmalloc.c	Mon Sep 23 23:24:38 2013 +0300
+++ b/Objects/obmalloc.c	Wed Sep 25 18:15:48 2013 +0530
@@ -12,6 +12,24 @@
 static void _PyMem_DebugCheckAddress(char api_id, const void *p);
 #endif
 
+#if defined(__has_feature)  /* Clang */
+ #if __has_feature(address_sanitizer)  /* is ASAN enabled? */
+  #define ATTRIBUTE_NO_ADDRESS_SAFETY_ANALYSIS \
+        __attribute__((no_address_safety_analysis)) \
+        __attribute__ ((noinline))
+ #else
+  #define ATTRIBUTE_NO_ADDRESS_SAFETY_ANALYSIS
+ #endif
+#else
+ #if defined(__SANITIZE_ADDRESS__)  /* GCC 4.8.x, is ASAN enabled? */
+  #define ATTRIBUTE_NO_ADDRESS_SAFETY_ANALYSIS \
+        __attribute__((no_address_safety_analysis)) \
+        __attribute__ ((noinline))
+ #else
+  #define ATTRIBUTE_NO_ADDRESS_SAFETY_ANALYSIS
+ #endif
+#endif
+
 #ifdef WITH_PYMALLOC
 
 #ifdef MS_WINDOWS
@@ -1300,6 +1318,7 @@
 
 /* free */
 
+ATTRIBUTE_NO_ADDRESS_SAFETY_ANALYSIS
 static void
 _PyObject_Free(void *ctx, void *p)
 {
@@ -1528,6 +1547,7 @@
  * return a non-NULL result.
  */
 
+ATTRIBUTE_NO_ADDRESS_SAFETY_ANALYSIS
 static void *
 _PyObject_Realloc(void *ctx, void *p, size_t nbytes)
 {