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Re: C++ PATCH for C++17 constexpr if

From: Jason Merrill <jason at redhat dot com>
To: gcc-patches List <gcc-patches at gcc dot gnu dot org>
Cc: Ville Voutilainen <ville dot voutilainen at gmail dot com>
Date: Wed, 10 Aug 2016 18:39:10 -0400
Subject: Re: C++ PATCH for C++17 constexpr if
Authentication-results: sourceware.org; auth=none
References: <CADzB+2nNudHWKqVsTjrxhHuf2gn_ZC=2gHtUtoiGy+EXAxVbWw@mail.gmail.com>

On Wed, Aug 10, 2016 at 5:57 PM, Jason Merrill <jason@redhat.com> wrote:
> This patch implements the C++17 constexpr if feature.  The primary use
> is in templates, where the non-taken branch of the constexpr
> if-statement is not instantiated.  But it can also be used outside of
> templates, where the branches are parsed and discarded, and discarded
> return statements are not used for return type deduction.

...and the feature test macro.

Attachment: cx-if-macro.diff
Description: Text document

References:
- C++ PATCH for C++17 constexpr if
  - From: Jason Merrill

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