gcc/testsuite/gcc.target/i386/pr63542-2.c

   1 /* PR target/63542 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -g -dA" } */
   4 /* { dg-additional-options "-fpic" { target fpic } } */
   5
   6 struct B { unsigned long c; unsigned char *d; };
   7 extern struct A { struct B *e[0x400]; } *f[128];
   8 extern void (*bar) (char *p, char *q);
   9
  10 char *
  11 foo (char *p, char *q)
  12 {
  13   struct B *g;
  14   char *b, *l;
  15   unsigned long s;
  16
  17   g = f[((unsigned long) p) >> 22]->e[(((unsigned long) p) >> 12) & 0x3ff];
  18   s = g->c << 2;
  19   int r = ((unsigned long) p) & 0xfff;
  20   int m = g->d[r];
  21   if (m > 0xfd)
  22     {
  23       m = (r >> 2) % (s >> 2);
  24       if ((((unsigned long) p) & ~(unsigned long) 0xfff) != (((unsigned long) q) & ~(unsigned long) 0xfff))
  25         goto fail;
  26     }
  27   b = (char *) ((unsigned long) p & ~(unsigned long) 3);
  28   b -= m << 2;
  29   l = b + s;
  30
  31   if ( q >= l || q < b)
  32     goto fail;
  33   return p;
  34 fail:
  35   (*bar) (p, q);
  36   return p;
  37 }