Code was added to libc++ and libstdc++ to avoid the TOCTOU exploit documented in the CVE. "Fixed" in this case means the source code for the library was modifie

Code was added to libc++ and libstdc++ to avoid the TOCTOU exploit documented in the CVE. "Fixed" in this case means the source code for the library was modified to prevent the documented exploit, and test cases were added to their test suites to exercise the code. Not sure about the Microsoft C++ standard library since the Microsoft Windows system API does not provide the same softlink functionalty.