[Bug sanitizer/117731] [15 Regression] libsanitizer builds not as c++17 even though it uses c++17 features

[haochen.jiang at intel dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117731

Haochen Jiang <haochen.jiang at intel dot com> changed:

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--- Comment #2 from Haochen Jiang <haochen.jiang at intel dot com> ---
I also notice that but why the warning does not appear previously since it is
always using gnu14?