[Bug c++/118513] ICE with modules and structured binding using std::tuple*

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118513

--- Comment #8 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Nathaniel Shead <nshead@gcc.gnu.org>:

https://gcc.gnu.org/g:2fcb0c079530b019586e5693f057d2eb72855e70

commit r15-7085-g2fcb0c079530b019586e5693f057d2eb72855e70
Author: Nathaniel Shead <nathanieloshead@gmail.com>
Date:   Sun Jan 19 15:26:03 2025 +1100

    c++/modules: Check linkage of structured binding decls

    When looking at PR c++/118513 I noticed that we don't currently check
    the linkage of structured binding declarations in modules.  This patch
    adds those checks, and corrects decl_linkage to properly recognise
    structured binding declarations as potentially having linkage.

    gcc/cp/ChangeLog:

            * parser.cc (cp_parser_decomposition_declaration): Check linkage
            of structured bindings in modules.
            * tree.cc (decl_linkage): Structured bindings don't necessarily
            have no linkage.

    gcc/testsuite/ChangeLog:

            * g++.dg/modules/export-6.C: Add structured binding tests.
            * g++.dg/modules/hdr-2.H: Likewise.

    Signed-off-by: Nathaniel Shead <nathanieloshead@gmail.com>