How to detect memory leaks
source link: https://vorbrodt.blog/2021/05/27/how-to-detect-memory-leaks/
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How to detect memory leaks
During my last week’s class I discussed a source-code method of finding memory leaks in C++. What do I mean by that? Source-code method is not a way of debugging a process like one could do with Valgrind on Linux or Deleaker on Windows (which I’ve used recently and really enjoyed its integration with Visual Studio). What I am referring to is a combination of
#define MACRO magic and overwriting the
void*operator new. A technique to keep track of all your
new /
new[] and
delete /
delete[] statements and finding A) leaks due to missing delete statements and B) mismatches between array and non array versions of said operators.
Simply by including a header file in your source code you enable this tracing capability. Though it has a limitation: unlike Deleaker or Valgrind it only works for plain vanilla
new /
new[] operator; my solution does not support any other form of it.
Code from the class:
newtrace.hpp (C++17 or earlier) | newtrace.cpp | README.txt
Using boost::stacktrace:
newtrace.st.hpp | newtrace.st.cpp
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