[Bug middle-end/77964] [7 Regression] Linux kernel firmware loader miscompiled

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77964

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
You don't need it for both.
  struct builtin_fw *b_fw = __start_builtin_fw;
  asm ("" : "+r" (b_fw));
  for (; b_fw != __end_builtin_fw; b_fw++) {
should be enough.  And indeed, without that it is undefined behavior.