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Message-ID: <CAMdrHjB9ecQas6GD=1S9AGmdXfC3FQGet3YtQXyt8QG3C6T=wQ@mail.gmail.com>
Date: Sun, 8 Jun 2025 16:38:51 +0800
From: Tommy <tommyskypromax@...il.com>
To: musl@...ts.openwall.com
Subject: The `sigpause` function behavior does not fully comply with the POSIX specification
Hello:
I noticed this commit.
-->
https://git.musl-libc.org/cgit/musl/commit/src/signal/sigpause.c?id=06c5e4e832f4796be02c743270fb554f978de02c
This commit changed the behavior of `sigpause`. When I passed an invalid
`sig` value, the `sigdelset` function returned -1 and set the error code to
EINVAL, which caused `sigpause` to return -1 and set the error code to
EINVAL. In the POSIX specification, `sigpause` can only return -1 if it
returns, and set the error code to `EINTR` (see
https://man7.org/linux/man-pages/man3/sigpause.3.html#RETURN_VALUE). Maybe
the current behavior of the `sigpause` function violates the POSIX
specification, so I would like to ask if this is a bug.
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