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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.c-torture/] [execute/] [va-arg-21.c] - Blame information for rev 297

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Line No. Rev Author Line
1 297 jeremybenn
/* Copyright (C) 2000  Free Software Foundation.
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   If the argument to va_end() has side effects, test whether side
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   effects from that argument are honored.
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   Written by Kaveh R. Ghazi, 10/31/2000.  */
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifndef __GNUC__
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#define __attribute__(x)
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#endif
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static void __attribute__ ((__format__ (__printf__, 1, 2)))
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doit (const char *s, ...)
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{
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  va_list *ap_array[3], **ap_ptr = ap_array;
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  ap_array[0] = malloc (sizeof(va_list));
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  ap_array[1] = NULL;
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  ap_array[2] = malloc (sizeof(va_list));
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  va_start (*ap_array[0], s);
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  vprintf (s, **ap_ptr);
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  /* Increment the va_list pointer once.  */
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  va_end (**ap_ptr++);
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  /* Increment the va_list pointer a second time.  */
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  ap_ptr++;
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  va_start (*ap_array[2], s);
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  /* If we failed to increment ap_ptr twice, then the parameter passed
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     in here will dereference NULL and should cause a crash.  */
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  vprintf (s, **ap_ptr);
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  va_end (**ap_ptr);
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  /* Just in case, If *ap_ptr is NULL abort anyway.  */
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  if (*ap_ptr == 0)
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    abort();
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}
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int main()
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{
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  doit ("%s", "hello world\n");
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  exit (0);
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}

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