From: John Wiegley <jwiegley@gmail.com>
Date: Wed, 27 Jun 2012 03:49:35 +0000 (-0500)
Subject: alloc.c (mark_memory): Do not check with -faddress-sanitizer when
X-Git-Tag: emacs-24.2.90~1199^2~330
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=ed6b35106553c615b210a12b51a7ebb57aaa82e4;p=emacs.git

alloc.c (mark_memory): Do not check with -faddress-sanitizer when
building with Clang.
---

diff --git a/src/ChangeLog b/src/ChangeLog
index 9b412fd01e3..d0e226db5dd 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2012-06-26  John Wiegley  <johnw@newartisans.com>
+
+	* alloc.c (mark_memory): Do not check with -faddress-sanitizer
+	when building with Clang.
+
 2012-06-26  Stefan Monnier  <monnier@iro.umontreal.ca>
 
 	* eval.c (Fapply): Allow calling it with a single argument.
diff --git a/src/alloc.c b/src/alloc.c
index 7f9574d43d1..e1fd479699a 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -4621,6 +4621,12 @@ mark_maybe_pointer (void *p)
 
 static void
 mark_memory (void *start, void *end)
+#ifdef __clang__
+  /* Do not allow -faddress-sanitizer to check this function, since it
+     crosses the function stack boundary, and thus would yield many
+     false positives. */
+  __attribute__((no_address_safety_analysis))
+#endif
 {
   void **pp;
   int i;