Fails to build on GCC 10, 11, and 12, "the address of ‘glz::opts{10, false}’ is not a valid template argument" about glaze

[stephenberry]

Thanks, I've just been testing with clang and MSVC, but want to support gcc. Will look into this.

[stephenberry]

I fixed the error you reported above, but it looks like gcc has some issues with std::declval, which I'm not sure how to get around.
Specifically this line return std::declval<T>().*std::declval<mptr_type>(); in member_check in common.hpp. gcc seems to think this std::declval is being evaluated, even when I make the function consteval. Until gcc fixes the bug or I figure out a work around gcc just won't work yet. clang and MSVC should be working fine.

[stephenberry]

I'm closing this issue because the problem addressed above has been fixed, but I added a new issue #7 for gcc std::declval issues and why it doesn't currently build.