1  /* PR rtl-optimization/44404
       2     foo() used to be miscompiled on ARM due to a bug in auto-inc-dec.c,
       3     which resulted in "strb r1, [r1], #-36".  */
       4  
       5  /* { dg-do run } */
       6  /* { dg-options "-O2 -fno-unroll-loops" } */
       7  
       8  extern char *strcpy (char *, const char *);
       9  extern int strcmp (const char*, const char*);
      10  extern void abort (void);
      11  
      12  char buf[128];
      13  
      14  void __attribute__((noinline))
      15  bar (int a, const char *p)
      16  {
      17    if (strcmp (p, "0123456789abcdefghijklmnopqrstuvwxyz") != 0)
      18      abort ();
      19  }
      20  
      21  void __attribute__((noinline))
      22  foo (int a)
      23  {
      24    if (a)
      25      bar (0, buf);
      26    strcpy (buf, "0123456789abcdefghijklmnopqrstuvwxyz");
      27    bar (0, buf);
      28  }
      29  
      30  int
      31  main (void)
      32  {
      33    foo (0);
      34    return 0;
      35  }