Question

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What is the best way to check for memory leaks in c++?

There is a way to check for memory leaks after the program ended and also a way to check if there are areas of memory allocated and not yet released?

For example:

int main()
{
   int *iPtr = new int;

   // Was allocated memory that is not released yet?
   return 0;
   // Memory leaks?
}

Answer 1

On linux you can use valgrind. On windows you’ll have to search for allocation profiler (there’s Purify and AQTime 7), use _CrtDumpMemoryLeaks (msvc specific, may produce false positives) or write custom memory manager that overrides global operator new/delete and reports memory usage.