Add testcase for r148375!

llvm-svn: 148378

clang/test/CodeGen/Inputs/stdio.h

@@ -0,0 +1,9 @@
+struct FILE;
+extern int vfprintf(struct FILE *s, const char *format, __builtin_va_list arg);
+extern int vprintf(const char *format, __builtin_va_list arg);
+
+extern __inline __attribute__((gnu_inline,always_inline)) int
+vprintf(const char *x, __builtin_va_list y)
+{
+  return vfprintf (0, 0, 0);
+}

clang/test/CodeGen/builtin-recursive.cc

@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 -nostdsysteminc -nobuiltininc -isystem Inputs -emit-llvm-only %s
+
+// This used to cause a read past the end of a global variable.
+
+#include <stdio.h>
+
+void testcase(void) {
+  vprintf(0, 0);
+}
+