diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 08458cec445..31a026a2d1a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2013-03-25  Richard Biener  <rguenther@suse.de>
+
+	PR middle-end/56434
+	* calls.c (expand_call): Use MALLOC_ABI_ALIGNMENT to annotate
+	the pointer returned by calls with ECF_MALLOC set.
+
 2013-03-24  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/mmx.md (mov<mode>): Add ?!Ym,r and r,?!Ym alternatives.
diff --git a/gcc/calls.c b/gcc/calls.c
index a585390be5f..cdab8e04617 100644
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -3188,7 +3188,7 @@ expand_call (tree exp, rtx target, int ignore)
 
 	  /* The return value from a malloc-like function is a pointer.  */
 	  if (TREE_CODE (rettype) == POINTER_TYPE)
-	    mark_reg_pointer (temp, BIGGEST_ALIGNMENT);
+	    mark_reg_pointer (temp, MALLOC_ABI_ALIGNMENT);
 
 	  emit_move_insn (temp, valreg);