[Bug middle-end/33631] [4.1/4.2/4.3 Regression] auto structure not initialized correctly

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2008-02-04 17:12 -------
Really reduced testcase, the key is that pthread_mutex_t is a union:

typedef union
{
  int __lock;
} pthread_mutex_t;

extern void abort (void);

int main(int c, char **v)
{
    struct { int c; pthread_mutex_t m; } r = { .m = 0 };
    if (r.c != 0)
      abort ();
    return 0;
}

in practice the testcase doesn't abort because the stack is zeroed anyway.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33631