diff --git a/llvm/lib/Target/README.txt b/llvm/lib/Target/README.txt
--- a/llvm/lib/Target/README.txt
+++ b/llvm/lib/Target/README.txt
@@ -1840,7 +1840,7 @@
 we remove checking in code like
 
   char *p = malloc(strlen(s)+1);
-  __strcpy_chk(p, s, __builtin_objectsize(p, 0));
+  __strcpy_chk(p, s, __builtin_object_size(p, 0));
 
 //===---------------------------------------------------------------------===//