1.13.3 IntelliSense regression: "expression must have a constant value"

[sean-mcmanus]

Use code

#include <vector>
#include <string>

void func(std::vector<std::string>&& v) {}

int main()
{
    std::string dd;
    std::vector<std::string> vv;
    func(std::vector{ dd });
}

with /std:c++17.

Bug: IntelliSense gives “expression must have a constant value”.

Regression compared to 1.13.2.

Filed on VS 17.5 Preview at https://developercommunity.visualstudio.com/t/High-priority-IntelliSense-regression-wi/10184093 .