[Bug c++/105651] Failure compiling constexpr/__builtin_memcpy on Cygwin with -std=c++20

[mckelvey at maskull dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105651

--- Comment #1 from James McKelvey <mckelvey at maskull dot com> ---
Created attachment 52991
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52991&action=edit
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