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From: "fdumont at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/99402] [10 Regression] std::copy creates
 _GLIBCXX_DEBUG false positive for attempt to subscript a dereferenceable
 (start-of-sequence) iterator
Date: Fri, 23 Apr 2021 12:02:22 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99402

--- Comment #13 from Fran=C3=A7ois Dumont <fdumont at gcc dot gnu.org> ---
Fixed on gcc-10 branch by this commit
https://gcc.gnu.org/git/?p=3Dgcc.git;a=3Dcommit;h=3Dab83ce42ea0b2fbc09d51b7=
bd5e69905dcaa2041.=