Crashes when opening a c++ file

When opening up a C++ file, sometimes the editor crashes when parsing the symbols for the file. Unfortunately I cannot provide the source code of the offending file, but its a simple Qt Test class with GMock. It happens every time on my editor, but never on my coworker's Qt Creator.

Since the stack trace (attached) shows a crash in fileNameLength(), I looked up the length of the file name and it is 170 characters with the full path.