gcc/testsuite/gcc.dg/torture/pr112736.c

   1 /* { dg-do run { target *-*-linux* *-*-gnu* *-*-uclinux* } } */
   2
   3 #include <sys/mman.h>
   4 #include <unistd.h>
   5
   6 int a, c[3][5];
   7
   8 void __attribute__((noipa))
   9 fn1 (int * __restrict b)
  10 {
  11   int e;
  12   for (a = 2; a >= 0; a--)
  13     for (e = 0; e < 4; e++)
  14       c[a][e] = b[a];
  15 }
  16
  17 int main()
  18 {
  19   long pgsz = sysconf (_SC_PAGESIZE);
  20   void *p = mmap (NULL, pgsz * 2, PROT_READ|PROT_WRITE,
  21                   MAP_ANONYMOUS|MAP_PRIVATE, 0, 0);
  22   if (p == MAP_FAILED)
  23     return 0;
  24   mprotect (p, pgsz, PROT_NONE);
  25   fn1 (p + pgsz);
  26   return 0;
  27 }