摘自http://www.opensource.apple.com/source/gcc/gcc-5484/gcc/gcov.c /* Gcov.c: prepend line execution counts and branch probabilities to a source file. Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free…