nacl/okcompilers/main.c


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extern int not3(int);
extern int bytes(int);
extern long long shr32(long long);
extern double double5(void);
extern int longbytes(void);
extern int intbytes(void);

int main(int argc,char **argv)
{
  if (intbytes() != sizeof(int)) return 100;
  if (longbytes() != sizeof(long)) return 100;

  if (not3(3)) return 100;

  /* on ppc32, gcc -mpowerpc64 produces SIGILL for >>32 */
  if (!not3(shr32(1))) return 100;

  /* on pentium 1, gcc -march=pentium2 produces SIGILL for (...+7)/8 */
  if (bytes(not3(1)) != 1) return 100;

  /* on pentium 1, gcc -march=prescott produces SIGILL for double comparison */
  if (double5() < 0) return 100;

  return 0;
}