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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.c-torture/] [execute/] [20000917-1.c] - Blame information for rev 816

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Line No. Rev Author Line
1 149 jeremybenn
/* This bug exists in gcc-2.95, egcs-1.1.2, gcc-2.7.2 and probably
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   every other version as well.  */
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typedef struct int3 { int a, b, c; } int3;
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int3
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one (void)
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{
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  return (int3) { 1, 1, 1 };
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}
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int3
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zero (void)
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{
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  return (int3) { 0, 0, 0 };
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}
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int
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main (void)
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{
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  int3 a;
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  /* gcc allocates a temporary for the inner expression statement
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     to store the return value of `one'.
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     gcc frees the temporaries for the inner expression statement.
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     gcc realloates the same temporary slot to store the return
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     value of `zero'.
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     gcc expands the call to zero ahead of the expansion of the
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     statement expressions.  The temporary gets the value of `zero'.
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     gcc expands statement expressions and the stale temporary is
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     clobbered with the value of `one'.  The bad value is copied from
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     the temporary into *&a.  */
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  *({ ({ one (); &a; }); }) = zero ();
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  if (a.a && a.b && a.c)
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    abort ();
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  exit (0);
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}

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