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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/71579] type_traits miss checks for type completeness
 in some traits
Date: Wed, 19 Aug 2020 11:25:15 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D71579

--- Comment #18 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jonathan Wakely <redi@gcc.gnu.org>:

https://gcc.gnu.org/g:69f571ffc513b689fa26e4c9fceba17c2c989ab3

commit r11-2759-g69f571ffc513b689fa26e4c9fceba17c2c989ab3
Author: Antony Polukhin <antoshkka@gmail.com>
Date:   Wed Aug 19 12:10:57 2020 +0100

    libstdc++: assert that type traits are not misused with incomplete types
[PR 71579]

    libstdc++-v3/ChangeLog:

    2020-08-19  Antony Polukhin  <antoshkka@gmail.com>

            PR libstdc++/71579
            * include/std/type_traits (invoke_result, is_nothrow_invocable_=
r)
            Add static_asserts to make sure that the argument of the type
            trait is not misused with incomplete types.
            (is_swappable_with, is_nothrow_swappable_with): Add static_asse=
rts
            to make sure that the first and second arguments of the type tr=
ait
            are not misused with incomplete types.
            * testsuite/20_util/invoke_result/incomplete_neg.cc: New test.
            * testsuite/20_util/is_nothrow_invocable/incomplete_neg.cc: New
test.
            * testsuite/20_util/is_nothrow_swappable/incomplete_neg.cc: New
test.
            * testsuite/20_util/is_nothrow_swappable_with/incomplete_neg.cc:
New
            test.
            * testsuite/20_util/is_swappable_with/incomplete_neg.cc: New te=
st.=