C++20 中的 constexpr std::vector 和 constexpr std::string

Question

In new c++20 std::vector and std::string have constexpr constructors (and other methods). I learned https://www.heise.de/developer/artikel/constexpr-std-vector-und-constexpr-std-string-in-C-20-4906108.html article that has examples of using constexpr versions of vector and string. But when i tried to test this code on https://godbolt.org with different compilers(last versions) - they totally all failed.

for example this code (with -std=c++20 key)

int main()
{
    constexpr std::vector myVec {15, -5, 0, 5, 10}; 
}

Is this feature not support yet? ...Or..how to use this?

Answer 1

To bring @Jovibor's comment to life - as stated in cppreference , no compiler currently supports constexpr std::vector or constexpr std::string . You just have to wait a bit.