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Subject: [Bug c++/105169] Compiling C++ code with
 -fpatchable-function-entry=16,14 results in references to discarded sections
Date: Tue, 17 May 2022 17:34:57 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105169

--- Comment #13 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Giuliano Belinassi
<giulianob@gcc.gnu.org>:

https://gcc.gnu.org/g:7a3f38a966a52893fb5bae301a1a3d56961358fb

commit r13-566-g7a3f38a966a52893fb5bae301a1a3d56961358fb
Author: Giuliano Belinassi <gbelinassi@suse.de>
Date:   Fri May 6 23:37:52 2022 -0300

    PR105169 Fix references to discarded sections

    When -fpatchable-function-entry=3D is enabled, certain C++ codes fails =
to
    link because of generated references to discarded sections in
    __patchable_function_entry section. This commit fixes this problem by
    puting those references in a COMDAT section.

    2022-05-06  Giuliano Belinassi  <gbelinassi@suse.de>

    gcc/ChangeLog
            PR c++/105169
            * targhooks.cc (default_print_patchable_function_entry_1): Hand=
le
COMDAT case.
            * varasm.cc (switch_to_comdat_section): New
            (handle_vtv_comdat_section): Call switch_to_comdat_section.
            * varasm.h: Declare switch_to_comdat_section.

    gcc/testsuite/ChangeLog
    2022-05-06  Giuliano Belinassi  <gbelinassi@suse.de>

            PR c++/105169
            * g++.dg/modules/pr105169.h: New file.
            * g++.dg/modules/pr105169_a.C: New test.
            * g++.dg/modules/pr105169_b.C: New file.=