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From: "pdimov at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/102350] New: __builtin_source_location not available in
 earlier language modes
Date: Wed, 15 Sep 2021 15:09:43 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102350

            Bug ID: 102350
           Summary: __builtin_source_location not available in earlier
                    language modes
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pdimov at gmail dot com
  Target Milestone: ---

Currently, `__builtin_source_location` requires (a) `<source_location>` to =
be
included and (b) -std=3Dc++20. Are there good reasons for these restriction=
s? The
builtin would still be extremely valuable in earlier language modes.

Libraries that still support 03/11/14/17 (Boost.System, for instance) could
transparently supply source locations by using a default `void const* loc =
=3D
__builtin_source_location()` argument.=