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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/105705] [12/13 Regression] std::equal
 triggers incorrect -Wnonnull warning
Date: Tue, 24 May 2022 08:58:04 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105705

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The warning seems to have started with r11-5391

Before that there was no warning even with -Wsystem-headers=