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Message-ID: <aEXzb8kiBYXnYBZO@voyager>
Date: Sun, 8 Jun 2025 22:32:47 +0200
From: Markus Wichmann <nullplan@....net>
To: musl@...ts.openwall.com
Cc: Bobby Bingham <koorogi@...rogi.info>
Subject: Re: The `sigpause` function behavior does not fully comply
with the POSIX specification
Am Sun, Jun 08, 2025 at 02:49:32PM -0400 schrieb Rich Felker:
> This would probably call for an interpretation, except that the
> functions were removed from the standard and the standard no longer
> has anything to say about them. So I'm not sure what's best to do.
>
> If the historical precedent in other implementations is for not
> reporting an error here, and applications are expecting that, perhaps
> we should revert the change?
>
> Rich
bionic will also return a sigdelset() failure to the caller, as will
glibc. newlib will not, it just silently ignores the error. dietlibc
does not have sigpause(), at least not that I could find.
So it seems like the most popular libc implementations do indeed return
EINVAL for invalid signals.
Ciao,
Markus
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