[Bug debug/108716] [10/11/12 Regression] Incorrect DW_AT_decl_{line,column} in DW_TAG_imported_decl

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108716

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:ffc19cb58ef24a27be86f9efa1faaa6ca8ad17b0

commit r12-9281-gffc19cb58ef24a27be86f9efa1faaa6ca8ad17b0
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Mar 2 19:17:52 2023 +0100

    c++, debug: Fix up locus of DW_TAG_imported_module [PR108716]

    Before IMPORTED_DECL has been introduced in PR37410, we used to emit
correct
    DW_AT_decl_line on DW_TAG_imported_module on the testcase below, after that
    change we haven't emitted it at all for a while and after some time
    started emitting incorrect locus, in particular the location of } closing
    the function.

    The problem is that while we have correct EXPR_LOCATION on the USING_STMT,
    when genericizing that USING_STMT into IMPORTED_DECL we don't copy the
    location to DECL_SOURCE_LOCATION, so it gets whatever input_location
happens
    to be when it is created.

    2023-03-02  Jakub Jelinek  <jakub@redhat.com>

            PR debug/108716
            * cp-gimplify.cc (cp_genericize_r) <case USING_STMT>: Set
            DECL_SOURCE_LOCATION on IMPORTED_DECL to expression location
            of USING_STMT or input_location.

            * g++.dg/debug/dwarf2/pr108716.C: New test.

    (cherry picked from commit 4d82022bfd15d36717bf60a11e75e9ea02204269)