gcc-4.9/gcc/testsuite/gcc.target/powerpc/ppc64-abi-warn-2.c


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/* { dg-do compile { target { powerpc*-*-linux* && lp64 } } } */

struct test
  {
    long a __attribute__((aligned (16)));
  };

void test (struct test a) /* { dg-message "note: the ABI of passing aggregates with 16-byte alignment will change" } */
{
}