clang-tests/gcc-4_2-testsuite/src/gcc.dg/Wpointer-sign-Wall.c

/* This is from PR c/25892.  See Wpointer-sign.c for more details.  */

/* { dg-options "-Wall" } */

void foo(unsigned long* ulp);

void bar(long* lp) {
  foo(lp); /* { dg-warning "differ in signedness" } */
}