Bug#906917: sem_timedwait could always block and returns ETIMEOUT but decrements the value on i686 architecture

To: Андрей Доценко <cnconlinux@gmail.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>, 906917@bugs.debian.org
Subject: Bug#906917: sem_timedwait could always block and returns ETIMEOUT but decrements the value on i686 architecture
From: Florian Weimer <fweimer@redhat.com>
Date: Wed, 16 Jan 2019 14:51:01 +0100
Message-id: <[🔎] 87pnswyam2.fsf@oldenburg2.str.redhat.com>
Reply-to: Florian Weimer <fweimer@redhat.com>, 906917@bugs.debian.org
In-reply-to: <[🔎] CAK4ZEfOJ2rh2U6-+PfaLsmKtj7=BaEofjW2s-7qxY7RdsWVmPA@mail.gmail.com> ("Андрей Доценко"'s message of "Wed, 16 Jan 2019 15:30:34 +0300")
References: <20181230193110.GA29762@aurel32.net> <CAK4ZEfPWG=PNhYOSbt1h2KOKDpQ-sWnSeDAbdOyme5=1fHT6QQ@mail.gmail.com> <[🔎] CAK4ZEfPhJ9dN9ZoEOJjHNEj4qa6Bba53xXgaGdfe-KwfJQ0okw@mail.gmail.com> <[🔎] 20190111155413.GA3167@aurel32.net> <CAK4ZEfPWG=PNhYOSbt1h2KOKDpQ-sWnSeDAbdOyme5=1fHT6QQ@mail.gmail.com> <[🔎] CAK4ZEfOJ2rh2U6-+PfaLsmKtj7=BaEofjW2s-7qxY7RdsWVmPA@mail.gmail.com> <CAK4ZEfPWG=PNhYOSbt1h2KOKDpQ-sWnSeDAbdOyme5=1fHT6QQ@mail.gmail.com>

* Андрей Доценко:

> The problem occurs only when using semaphores in a library that is not
> linked against pthread.

Yes, that's expected.  Sorry I didn't see this earlier—we have an
upstream bug about this:

  <https://sourceware.org/bugzilla/show_bug.cgi?id=23543>

In general, underlinking produces broken binaries.

Thanks,
Florian

Reply to:

References:
- Bug#906917: sem_timedwait could always block and returns ETIMEOUT but decrements the value on i686 architecture
  - From: Андрей Доценко <cnconlinux@gmail.com>
- Bug#906917: sem_timedwait could always block and returns ETIMEOUT but decrements the value on i686 architecture
  - From: Aurelien Jarno <aurelien@aurel32.net>
- Bug#906917: sem_timedwait could always block and returns ETIMEOUT but decrements the value on i686 architecture
  - From: Андрей Доценко <cnconlinux@gmail.com>

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