Pointer and reference values not displayed in lldb-based debugger

#include <string>

int main(int argc, char* argv[]) {
    (void)argc;
    (void)argv;

    std::string stdString = "i am std::string";
    (void)stdString;

    std::string &stdStringReference = stdString;
    (void)stdStringReference;

    std::string *stdStringPointer = &stdString;

    std::string *&stdStringPointerReference = stdStringPointer;
    (void)stdStringPointerReference;

    int c = 4;
    // Set breakpoint here.
    ++c;

    return 0;
}