gcov is a tool you can use, together with GNU CC, to test code coverage in your programs. gcov is free software, but for the moment it is only available from Cygnus Solutions (pending discussions with the FSF about how they think Cygnus Solutions should really write it). The following documentation discusses and describes version 1.5 of gcov.
Jim Wilson wrote gcov, and the original form of this documentation (with Pat McGregor editing). 0