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Re: Simplify _Rb_tree instantiation

From: Ville Voutilainen <ville dot voutilainen at gmail dot com>
To: Jonathan Wakely <jwakely at redhat dot com>
Cc: François Dumont <frs dot dumont at gmail dot com>, "libstdc++ at gcc dot gnu dot org" <libstdc++ at gcc dot gnu dot org>, gcc-patches <gcc-patches at gcc dot gnu dot org>
Date: Fri, 25 May 2018 22:19:11 +0300
Subject: Re: Simplify _Rb_tree instantiation
References: <302049ec-76ee-94c4-f0b1-11b508285144@gmail.com> <CAFk2RUYbTqyTQAs9PSHpOBjPbjKq-Jgn7cLH-3ho0VsoZPi5MA@mail.gmail.com> <20180525191607.GE7974@redhat.com>

On 25 May 2018 at 22:16, Jonathan Wakely <jwakely@redhat.com> wrote:
>> Why is this patch removing _Compare() calls? That changes the
>> initialization
>> of _Compare from value-initialization to default-initialization, which
>> is a breaking change.
>
>
> The _Rb_tree_key_compare base class will still value-initialize it:
>
>      _Rb_tree_key_compare()
>      _GLIBCXX_NOEXCEPT_IF(
>         is_nothrow_default_constructible<_Key_compare>::value)
>      : _M_key_compare()
>      { }

Okay, no problem then.

Follow-Ups:
- Re: Simplify _Rb_tree instantiation
  - From: François Dumont

References:
- Simplify _Rb_tree instantiation
  - From: François Dumont
- Re: Simplify _Rb_tree instantiation
  - From: Ville Voutilainen
- Re: Simplify _Rb_tree instantiation
  - From: Jonathan Wakely

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