gcc/testsuite/gcc.dg/pr106519.c

/* { dg-do compile } */

int bytestart, bytemem_0_0, modlookup_l_p;

void
modlookup_l() {
  long j;
  while (modlookup_l_p)
    while (bytestart && j && bytemem_0_0)
      j = j + 1;
}