llvm/test/FrontendC/2006-09-25-DebugFilename.c

// RUN: not %llvmgcc -xc %s -S -o /dev/null |& \
// RUN:   grep fluffy | grep 2006-09-25-DebugFilename.c
#include "2006-09-25-DebugFilename.h"
int func1() { return hfunc1(); }
int func2() { fluffy; return hfunc1(); }