The following example code demonstrates the use of uninitialized memory access and how the same can be detected using Memcheck:
#include <iostream>using namespace std;class MyClass { private: int x; public: MyClass( ); void print( );}; MyClass::MyClass() { cout << "\nMyClass constructor ..." << endl;}void MyClass::print( ) { cout << "\nValue of x is " << x << endl;}int main ( ) { MyClass obj; obj.print(); return 0;}
Let's now compile and detect the uninitialized memory access issue using Memcheck:
g++ main.cpp -gvalgrind ./a.out --track-origins=yes==51504== Memcheck, a memory error detector==51504== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.==51504== Using Valgrind-3.11.0 and LibVEX; ...
