diff --git a/test/CodeGen/merge-attrs.c b/test/CodeGen/merge-attrs.c
index c3349d8..3c1d62a 100644
--- a/test/CodeGen/merge-attrs.c
+++ b/test/CodeGen/merge-attrs.c
@@ -1,12 +1,12 @@
 // RUN: clang %s -emit-llvm -o %t
 
-void *malloc(int size) __attribute__ ((__nothrow__));
+void *malloc(__SIZE_TYPE__ size) __attribute__ ((__nothrow__));
 
 inline static void __zend_malloc() {
     malloc(1);
 }
 
-void *malloc(int size) __attribute__ ((__nothrow__));
+void *malloc(__SIZE_TYPE__ size) __attribute__ ((__nothrow__));
 
 void fontFetch() {
     __zend_malloc(1);