[Bug target/98146] [11 Regression] section type conflict when "used" attribute is applied to decl with specific section

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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98146

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:

https://gcc.gnu.org/g:6175383249143309fdc780a02bea484f4450def7

commit r11-6140-g6175383249143309fdc780a02bea484f4450def7
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Thu Dec 3 11:01:06 2020 -0800

    Switch to a new section if the SECTION_RETAIN bit doesn't match

    When definitions marked with used attribute and unmarked definitions are
    placed in the section with the same name, switch to a new section if the
    SECTION_RETAIN bit doesn't match.

    gcc/

            PR target/98146
            * output.h (switch_to_section): Add a tree argument, default to
            nullptr.
            * varasm.c (get_section): If the SECTION_RETAIN bit doesn't match,
            return and switch to a new section later.
            (assemble_start_function): Pass decl to switch_to_section.
            (assemble_variable): Likewise.
            (switch_to_section): If the SECTION_RETAIN bit doesn't match,
            switch to a new section.

    gcc/testsuite/

            PR target/98146
            * c-c++-common/attr-used-5.c: New test.
            * c-c++-common/attr-used-6.c: Likewise.
            * c-c++-common/attr-used-7.c: Likewise.
            * c-c++-common/attr-used-8.c: Likewise.
            * c-c++-common/attr-used-9.c: Likewise.