The function stripTrailing() in src/mongo/util/mongoutils/str.h does not strip trailing characters from its input string; it strips all occurrences of characters in the 'chars' string from its input string.

The comment /** remove trailing chars in place */ is wrong.

This function is only used in one place that I could find, in some Windows-specific error reporting code in acquirePathLock() in src/mongo/db/instance.cpp.