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Subject: [Bug preprocessor/89971] [9/10 Regression] ICE: unspellable token
 PADDING
Date: Wed, 11 May 2022 06:23:45 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D89971

--- Comment #13 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:86b98701bf927ea438354723932e623557c04e42

commit r9-10116-g86b98701bf927ea438354723932e623557c04e42
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Dec 30 22:23:58 2021 +0100

    libcpp: Fix up ##__VA_OPT__ handling [PR89971]

    In the following testcase we incorrectly error about pasting / token
    with padding token (which is a result of __VA_OPT__); instead we should
    like e.g. for ##arg where arg is empty macro argument clear PASTE_LEFT
    flag of the previous token if __VA_OPT__ doesn't add any real tokens
    (which can happen either because the macro doesn't have any tokens
    passed to ... (i.e. __VA_ARGS__ expands to empty) or when __VA_OPT__
    doesn't have any tokens in between ()s).

    2021-12-30  Jakub Jelinek  <jakub@redhat.com>

            PR preprocessor/89971
    libcpp/
            * macro.c (replace_args): For ##__VA_OPT__, if __VA_OPT__ expan=
ds
            to no tokens at all, drop PASTE_LEFT flag from the previous tok=
en.
    gcc/testsuite/
            * c-c++-common/cpp/va-opt-9.c: New test.

    (cherry picked from commit 5545d1edcbdb1701443f94dde7ec97c5ce3e1a6c)=