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/* PR tree-optimization/51315 */

/* Reported by Jurij Smakov <jurij@wooyd.org> */

typedef unsigned int size_t;

extern void *memcpy (void *__restrict __dest,

       __const void *__restrict __src, size_t __n)

     __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));

extern size_t strlen (__const char *__s)

     __attribute__ ((__nothrow__)) __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));

typedef __INT16_TYPE__ int16_t;

typedef __INT32_TYPE__ int32_t;

extern void abort (void);

int a;

static void __attribute__ ((noinline,noclone))

do_something (int item)

{

  a = item;

}

int

pack_unpack (char *s, char *p)

{

  char *send, *pend;

  char type;

  int integer_size;

  send = s + strlen (s);

  pend = p + strlen (p);

  while (p < pend)

    {

      type = *p++;

      switch (type)

 {

 case 's':

   integer_size = 2;

   goto unpack_integer;

 case 'l':

   integer_size = 4;

   goto unpack_integer;

 unpack_integer:

   switch (integer_size)

     {

     case 2:

       {

  union

  {

    int16_t i;

    char a[sizeof (int16_t)];

  }

  v;

  memcpy (v.a, s, sizeof (int16_t));

  s += sizeof (int16_t);

  do_something (v.i);

       }

       break;

     case 4:

       {

  union

  {

    int32_t i;

    char a[sizeof (int32_t)];

  }

  v;

  memcpy (v.a, s, sizeof (int32_t));

  s += sizeof (int32_t);

  do_something (v.i);

       }

       break;

     }

   break;

 }

    }

  return (int) *s;

}

int

main (void)

{

  int n = pack_unpack ("\200\001\377\376\035\300", "sl");

  if (n != 0)

    abort ();

  return 0;

}