Re: [PATCH v4 0/1] MR2126: ntdll: Print an error if we receive a signal not on the signal stack.

[Jinoh Kang (＠iamahuman)]

Jinoh Kang (@iamahuman) commented about dlls/ntdll/unix/thread.c:
> +/***********************************************************************
> -
> -
>       check_signal_stack
> - */
>
> +void check_signal_stack(void)
> +{
> - stack_t ss;
> -
> - sigaltstack( NULL, &ss );
> - if (!(ss.ss_flags & SS_ONSTACK))
> - {
> -
>    struct sigaction sa;
> -
> -
>    /* if this happened we probably got a signal from a non-wine thread.
> -
>     * regardless of the reason, we can't get access to the TEB (or there
> -
>     * isn't one), so print a message and bail */
> -
>    fprintf( stderr, "wine: received signal not on the signal stack; terminating\n" );

`fprintf` is not async-signal-safe.