[Bug c++/103746] [12 Regression] Rejected code on "call to non-‘constexpr’ function ‘glsl::vec3& glsl::vec3::operator=(glsl::vec3&&)’" since r12-5256-g37326651b439bac5

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103746

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
MSVC error:

<source>(12): error C3615: constexpr function 'mat3::mat3' cannot result in a
constant expression
<source>(12): note: failure was caused by call of undefined function or one not
declared 'constexpr'
<source>(12): note: see usage of 'vec3::operator ='

As mentioned -fimplicit-constexpr will workaround the issue really.