https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105545
--- Comment #5 from Tom Hughes <tom at compton dot nu> --- On top of -O1 you seem to need all of -fexpensive-optimizations -ftree-vrp -fipa-sra to trigger it.
[Bug tree-optimization/105545] [12/13 Regression] Warning for string assignment with _GLIBCXX_ASSERTIONS since r12-3347-g8af8abfbbace49e6
tom at compton dot nu via Gcc-bugs Thu, 12 May 2022 09:02:04 -0700
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