20050922-2.c

来自「用于进行gcc测试」· C语言 代码 · 共 34 行

/* 20050922-1.c does not trigger the expand_shift rotate bug on sh4-elf, but  
   this does.  */

/* { dg-do run } */
/* { dg-options "-O1 -std=c99" } */

#include <stdlib.h>

#if __INT_MAX__ == 2147483647
typedef unsigned int uint32_t;
#elif __LONG_MAX__ == 2147483647
typedef unsigned long uint32_t;
#else
#error unable to find 32-bit integer type
#endif

#define rotl(x,n)   (((x) << ((int)(n))) | ((x) >> (32 - (int)(n))))

uint32_t
f (uint32_t a, uint32_t b)
{

  b = rotl (a, b & 31);
  return b;
}

int
main ()
{
  if (f(2,31) != 1)
    abort ();
  exit (0);
}