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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/106272] New: clang build: new warning ?
Date: Tue, 12 Jul 2022 18:41:52 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106272

            Bug ID: 106272
           Summary: clang build: new warning ?
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

Recent gcc builds with clang say this:

libcpp/include/line-map.h:1882:12: warning: moving a temporary object preve=
nts
copy elision [-Wpessimizing-move]

I have little idea what that means, but the line of code is

    return std::move (label_text (buffer, true));

This new warning appears about 700 times, so it might be important.=