On Wed, 22 Jun 2022 at 06:26, Alexandre Oliva via Libstdc++
<libstd...@gcc.gnu.org> wrote:
>
>
> Though sleep, nanosleep and clock_nanosleep are all POSIX cancellation
> points, not all target systems follow this POSIX requirement.
> 30_threads/thread/native_handle/cancel.cc will run until it times out
> on such systems.
>
> Rather than failing a C++ library test because of a limitation of the
> target system, this patch gives the test a chance to successfully
> exercise the features it intends to exercise, by introducing a
> cancellation point in a loop that would otherwise run indefinitely on
> systems exhibiting this limitation.
>
> Regstrapped on x86_64-linux-gnu, also tested with a cross to
> aarch64-rtems6. Ok to install?
OK, thanks.
This test is already explicitly pthread-specific, so there's no
problem using pthread_testcancel there. It already uses
pthread_cancel, and is gated by:
// { dg-require-effective-target pthread }
