[Bug lto/85248] [6/7/8 Regression] Miscompilation when using error function that returns

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85248

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #1)
> I suspect this is because error is marked as noreturn in the header file and
> not a gcc issue.

No, it's not. It's properly distinguished:

extern void __error_alias (int __status, int __errnum, const char *__format,
...) __asm__ ("" "error")


  __attribute__ ((__format__ (__printf__, 3, 4)));
extern void __error_noreturn (int __status, int __errnum, const char *__format,
...) __asm__ ("" "error")


  __attribute__ ((__noreturn__, __format__ (__printf__, 3, 4)));




extern __inline __attribute__ ((__always_inline__)) __attribute__
((__gnu_inline__)) void
error (int __status, int __errnum, const char *__format, ...)
{
  if (__builtin_constant_p (__status) && __status != 0)
    __error_noreturn (__status, __errnum, __format, __builtin_va_arg_pack ());
  else
    __error_alias (__status, __errnum, __format, __builtin_va_arg_pack ());
}