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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.target/] [x86_64/] [abi/] [test_varargs.c] - Blame information for rev 328

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Line No. Rev Author Line
1 328 jeremybenn
/* Test variable number of arguments passed to functions. For now this is
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   just a simple test to see if it's working.  */
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#include <stdarg.h>
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#include "defines.h"
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#define ARG_INT     1
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#define ARG_DOUBLE  2
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#define ARG_POINTER 3
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union types
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{
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  int ivalue;
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  double dvalue;
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  void *pvalue;
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};
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struct arg
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{
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  int type;
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  union types value;
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};
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struct arg *arglist;
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/* This tests the argumentlist to see if it matches the format string which
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   is printf-like. Nothing will be printed of course. It can handle ints,
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   doubles and void pointers. The given value will be tested against the
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   values given in arglist.
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   This test only assures that the variable argument passing is working.
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   No attempt is made to see if argument passing is done the right way.
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   Since the ABI doesn't say how it's done, checking this is not really
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   relevant.  */
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void
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my_noprintf (char *format, ...)
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{
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  va_list va_arglist;
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  char *c;
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  int ivalue;
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  double dvalue;
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  void *pvalue;
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  struct arg *argp = arglist;
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  va_start (va_arglist, format);
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  for (c = format; *c; c++)
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    if (*c == '%')
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      {
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        switch (*++c)
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          {
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          case 'd':
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            assert (argp->type == ARG_INT);
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            ivalue = va_arg (va_arglist, int);
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            assert (argp->value.ivalue == ivalue);
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            break;
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          case 'f':
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            assert (argp->type == ARG_DOUBLE);
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            dvalue = va_arg (va_arglist, double);
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            assert (argp->value.dvalue == dvalue);
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            break;
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          case 'p':
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            assert (argp->type == ARG_POINTER);
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            pvalue = va_arg (va_arglist, void *);
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            assert (argp->value.pvalue == pvalue);
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            break;
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          default:
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            abort ();
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          }
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        argp++;
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      }
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}
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int
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main (void)
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{
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#ifdef CHECK_VARARGS
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  struct arg al[5];
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  al[0].type = ARG_INT;
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  al[0].value.ivalue = 256;
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  al[1].type = ARG_DOUBLE;
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  al[1].value.dvalue = 257.0;
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  al[2].type = ARG_POINTER;
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  al[2].value.pvalue = al;
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  al[3].type = ARG_DOUBLE;
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  al[3].value.dvalue = 258.0;
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  al[4].type = ARG_INT;
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  al[4].value.ivalue = 259;
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  arglist = al;
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  my_noprintf("%d%f%p%f%d", 256, 257.0, al, 258.0, 259);
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#endif
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  return 0;
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}

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