[PATCH] libstdc++: Fix compare_three_way for constexpr and Clang

Paul Keir Paul.Keir@uws.ac.uk
Fri Aug 20 20:17:40 GMT 2021


The current compare_three_way implementation makes provision for constant evaluation contexts (avoiding reinterpret_cast etc.), but the approach fails with Clang; when it compares two const volatile void pointers: "comparison between unequal pointers to void has unspecified result". I include a fix and test.

Could someone commit the attached patch for me?


Please consider the environment and think before you print.

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