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From: Jonathan Wakely <redi@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r12-8934] libstdc++: Fix dangling reference in filesystem::path::filename() Date: Thu, 24 Nov 2022 16:36:21 +0000 (GMT) [thread overview] Message-ID: <20221124163621.3709D3830B35@sourceware.org> (raw) https://gcc.gnu.org/g:6e3b2c0d5e676e1cba1c27b95dd850e5cc33f9e1 commit r12-8934-g6e3b2c0d5e676e1cba1c27b95dd850e5cc33f9e1 Author: Jonathan Wakely <jwakely@redhat.com> Date: Fri Oct 28 15:28:09 2022 +0100 libstdc++: Fix dangling reference in filesystem::path::filename() The new -Wdangling-reference warning noticed this. libstdc++-v3/ChangeLog: * include/bits/fs_path.h (path::filename()): Fix dangling reference. (cherry picked from commit 49237fe6ef677a81eae701f937546210c90b5914) Diff: --- libstdc++-v3/include/bits/fs_path.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/libstdc++-v3/include/bits/fs_path.h b/libstdc++-v3/include/bits/fs_path.h index 1b4a1b69f37..7a3d0513134 100644 --- a/libstdc++-v3/include/bits/fs_path.h +++ b/libstdc++-v3/include/bits/fs_path.h @@ -1288,9 +1288,9 @@ namespace __detail { if (_M_pathname.back() == preferred_separator) return {}; - auto& __last = *--end(); - if (__last._M_type() == _Type::_Filename) - return __last; + auto __last = --end(); + if (__last->_M_type() == _Type::_Filename) + return *__last; } return {}; }
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