Valgrind 3.2.0 - An open-source memory debugger for x86-linux.

When a program is run under Valgrind's supervision, all reads and writes of memory are checked, and calls to malloc/new/free/delete are intercepted. As a result, Valgrind can detect problems such as:

* Use of uninitialised memory * Reading/writing memory after it has been free'd * Reading/writing off the end of malloc'd blocks * Reading/writing inappropriate areas on the stack * Memory leaks -- where pointers to malloc'd blocks are lost forever * Passing of uninitialised and/or unaddressible memory to system calls * Mismatched use of malloc/new/new [] vs free/delete/delete [].