gcc/testsuite/gcc.dg/pr71280.c

/* PR tree-optimization/71280 */
/* { dg-do compile } */
/* { dg-options "-O2" } */

extern char v[];

int
foo ()
{
  int k = 0;
  typedef char T[64];
  for (int i = 0; i < 64; i++)
    k += (*(T *) &v[0])[i];
  return k;
}