msvc_constexpr_deprecated_bug.cpp

//_MSC_VER: 1923
//_MSC_FULL_VER: 192328107
//Toolset: v142
//Visual studio: 2019 16.3.10
//compiler flags: /std:c++latest /permissive-

#include <string_view>

[[deprecated]]
constexpr std::string_view Test(const char* str, size_t len) noexcept
{
	return std::string_view{ str, len };
}

int main()
{
	constexpr auto test1 = Test("fff", 3); //does NOT  issue a deprecation warning
	const auto test2 = Test("fff", 3); //correctly issues a deprecation warning

    return 0;
}