Fix  "strbuf += stufflen;" crash.

llvm-svn: 43365
diff --git a/clang/test/CodeGen/compound.c b/clang/test/CodeGen/compound.c
index 778a5ce..0909565 100644
--- a/clang/test/CodeGen/compound.c
+++ b/clang/test/CodeGen/compound.c
@@ -14,3 +14,7 @@
 short x; 
 void test2(char c) { x += c; }
 
+void foo(char *strbuf) {
+  int stufflen = 4;
+  strbuf += stufflen;
+}