'Saving const ref string in std::pair

Example code:

constexpr const char* tstStr = "Test str";

void testFunc(std::pair<const std::string&, int> el)
{
    std::cout << "Test func called" << el.first << std::endl;
}

int main()
{
    testFunc({std::string(tstStr), 1}); // Ok
    testFunc({tstStr, 1}); // Corrupt

}

The testFunc({std::string(tstStr), 1}); line finishes successfully, but the next line fails (asan confirms corruption)

Can someone explain what is happening?

pass-by-const-reference


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