[PATCH] libstdc++: async: tolerate slightly shorter sleep

[Jonathan Wakely]

On Thu, 23 Jun 2022 at 12:38, Alexandre Oliva via Libstdc++
<libstdc++@gcc.gnu.org> wrote:
>
> On Jun 22, 2022, Alexandre Oliva <oliva@adacore.com> wrote:
>
> > Regstrapped on x86_64-linux-gnu, also tested with a cross to
> > aarch64-rtems6.  Ok to install?
>
> The early wakeups are fixed for rtems6.1, so the same question raised at
> https://gcc.gnu.org/pipermail/gcc-patches/2022-June/597102.html apply to
> this one:

Looks like I never reviewed this one, sorry.

The patch to xfail this test for rtems is OK.

>
> libstdc++: xfail nanosleep tests on rtems
>
> From: Alexandre Oliva <oliva@adacore.com>
>
> Since it has been determined that nanosleep may return slightly too
> early on RTEMS, due to clock resolution differences, expect
> 30_thread/async tests that have detected too-early wakeups to fail on
> RTEMS targets.
>
>
> for  libstdc++-v3/ChangeLog
>
>         * testsuite/30_threads/async/async.cc: xfail on RTEMS.
>
> TN: V608-048
> ---
>  libstdc++-v3/testsuite/30_threads/async/async.cc |    1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/libstdc++-v3/testsuite/30_threads/async/async.cc b/libstdc++-v3/testsuite/30_threads/async/async.cc
> index 38943ff1a9a5e..e0b731186c459 100644
> --- a/libstdc++-v3/testsuite/30_threads/async/async.cc
> +++ b/libstdc++-v3/testsuite/30_threads/async/async.cc
> @@ -2,6 +2,7 @@
>  // { dg-additional-options "-pthread" { target pthread } }
>  // { dg-require-effective-target c++11 }
>  // { dg-require-gthreads "" }
> +// { dg-xfail-if "nanosleep may wake up too early" { *-*-rtems* } }
>
>  // Copyright (C) 2010-2022 Free Software Foundation, Inc.
>  //
>
>
> --
> Alexandre Oliva, happy hacker                https://FSFLA.org/blogs/lxo/
>    Free Software Activist                       GNU Toolchain Engineer
> Disinformation flourishes because many people care deeply about injustice
> but very few check the facts.  Ask me about <https://stallmansupport.org>
>