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Date: Wed, 21 Apr 2021 07:16:09 -0700
From: Thomas Rodgers <rodgert@appliantology.com>
To: Jonathan Wakely <jwakely@redhat.com>
Cc: David Edelsohn <dje.gcc@gmail.com>, Jakub Jelinek <jakub@redhat.com>,
 gcc-patches@gcc.gnu.org, libstdc++@gcc.gnu.org
Subject: Re: GCC 11.1 Release Candidate available from gcc.gnu.org
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On 2021-04-21 05:12, Jonathan Wakely wrote:

> On 21/04/21 12:38 +0100, Jonathan Wakely wrote: On 20/04/21 22:12 
> -0700, Thomas Rodgers wrote: @@ -86,6 +88,24 @@ 
> _GLIBCXX_BEGIN_NAMESPACE_VERSION
> }
> }
> 
> +    _GLIBCXX_ALWAYS_INLINE bool
> +    _M_try_acquire() noexcept
> +    {
> +      for (;;)
> +    {
> +      auto __err = sem_trywait(&_M_semaphore);
> +      if (__err && (errno == EINTR))
> +        continue;
> +      else if (__err && (errno == EAGAIN))
> +        return false;
> +      else if (__err)
> +        std::terminate();
> +      else
> +        break;
> +    }
> +      return true;
> +    }
> +
> _GLIBCXX_ALWAYS_INLINE void
> _M_release(std::ptrdiff_t __update) noexcept
> {
> Please just commit this part to trunk and gcc-11, not the macro
> renaming (as that's been fixed by Jakub already).

I think on trunk I'd prefer to do the attached. WDYT?

Looks good to me.