make this test case 64bit test. It fails due to 
'int' vs. 'long' issue with i386.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162125 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/warn-bad-function-cast.c b/test/Sema/warn-bad-function-cast.c
index 1928e2a..41a3f78 100644
--- a/test/Sema/warn-bad-function-cast.c
+++ b/test/Sema/warn-bad-function-cast.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 %s -fsyntax-only -Wno-unused-value -Wbad-function-cast -verify
+// RUN: %clang_cc1 %s -fsyntax-only -Wno-unused-value -Wbad-function-cast -triple x86_64-unknown-unknown -verify
 // rdar://9103192
 
 void vf(void);