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POVery simple program passes VS2010 c++ memory leak checker, but still uses more memory at program end after destroying all objects?
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  1. POVery simple program passes VS2010 c++ memory leak checker, but still uses more memory at program end after destroying all objects?
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    copied!<p>I've been having trouble with a memory leak in a large-scale project I've been working on, but the project has no leaks according to the VS2010 memory checker (and I've checked everything extensively).</p> <p>I decided to write a simple test program to see if the leak would occur on a smaller scale.</p> <pre><code>struct TestStruct { std::string x[100]; }; class TestClass { public: std::vector&lt;TestStruct*&gt; testA; //TestStruct** testA; TestStruct xxx[100]; TestClass() { testA.resize(100, NULL); //testA = new TestStruct*[100]; for(unsigned int a = 0; a &lt; 100; ++a) { testA[a] = new TestStruct; } } ~TestClass() { for(unsigned int a = 0; a &lt; 100; ++a) { delete testA[a]; } //delete [] testA; testA.clear(); } }; int _tmain(int argc, _TCHAR* argv[]) { _CrtSetDbgFlag ( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF ); char inp; std::cin &gt;&gt; inp; { TestClass ttt[2]; TestClass* bbbb = new TestClass[2]; std::cin &gt;&gt; inp; delete [] bbbb; } std::cin &gt;&gt; inp; std::cin &gt;&gt; inp; return 0; } </code></pre> <p>Using this code, the program starts at about 1 meg of memory, goes up to more than 8 meg, then at the end drops down to 1.5 meg. Where does the additional .5 meg go? I am having a similar problem with a particle system but on the scale of hundreds of megabytes.</p> <p>I cannot for the life of me figure out what is wrong.</p> <p>As an aside, using the array (which I commented out) greatly reduces the wasted memory, but does not completely reduce it. I would expect for the memory usage to be the same at the last cin as the first.</p> <p>I am using the task manager to monitor memory usage.</p> <p>Thanks.</p>
 

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