Fix a codegen crash on test/CodeGen/cast.c, reported by Keith.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@44908 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/cast.c b/test/CodeGen/cast.c
new file mode 100644
index 0000000..dfd9bb8
--- /dev/null
+++ b/test/CodeGen/cast.c
@@ -0,0 +1,6 @@
+// RUN: clang %s -emit-llvm
+
+extern void go(const void *p);
+float v[2] = { 0.0, 1.0 };
+void foo(void) { go(v); }
+