The only way that's likely to happen is if the bug-fixing was performed directly on the program binary itself without reference to the source code. This is a difficult task to pull off.

Linux's which command returns three types of exit codes: 0 when all specified files are located and can run, 1 when at least one command is not executable, and 2 when an unrecognized option is used.

Find out how source code is compiled for different programming languages and computer architectures, including the evolution from FORTRAN to CLR and JIT compilers. Topics Spotlight: New Thinking ...