Mastering C++ Multithreading

Memcheck

Memcheck is the default Valgrind tool when no other tool is specified in the parameters to its executable. Memcheck itself is a memory error detector capable of detecting the following types of issues:

• Accessing memory outside of allocated bounds, overflowing of the stack, and accessing previously freed memory blocks
• The use of undefined values, which are variables which have not been initialized
• Improper freeing of heap memory including repeatedly freeing blocks
• Mismatched use of C- and C++-style memory allocations as well as array allocators and deallocators (new[] and delete[])
• Overlapping source and destination pointers in functions such as memcpy
• The passing of an invalid (for example, negative) value as the size parameter ...