https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105545
--- Comment #4 from Tom Hughes <tom at compton dot nu> --- You don't need -D_GLIBCXX_ASSERTIONS in C++20 mode but you do in C++17 mode it seems.
[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 08:51:35 -0700
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