Chapter 9 - Debugging.debug1.c  -  A bugged bubble sort program.debug2.c  -  The same program with additional instrumentation code.debug3.c  -  The same program again, with the bug amplified.cinfo.c   -  A program which can print information about its own compilation date and time.debug4.c  -  The bubble sort program with one of its bugs fixed.assert.c  -  A program that demonstrates the assert macro.efence.c  -  A program which abuses memory to test the Electric Fence library. checker.c -  A program to test the Checker compiler back-end.