I got this error when debugging in VC++: _Scary->_Myhead was 0xDDDDDDDD. I would like to know what this error means, possible sources, and possible solutions. I think it may have something to do with std::map usage, but I'm not sure. For reference, the debugger leads me to a file called "xtree". Unfortunately, I have no idea how to reproduce this because it is a big project and I do not know why this error is occuring.
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`0xDDDDDDDD` means freed heap memory. [https://stackoverflow.com/questions/127386/in-visual-studio-c-what-are-the-memory-allocation-representations](https://stackoverflow.com/questions/127386/in-visual-studio-c-what-are-the-memory-allocation-representations) – drescherjm Nov 17 '20 at 19:01
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It means you have a bug in your code. You will have to find the bug, and fix it. – Sam Varshavchik Nov 17 '20 at 19:01
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My guess (not having any code at all) is you have a class that violates the rule of 3 / 5 / 0. – drescherjm Nov 17 '20 at 19:02
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***the debugger leads me to a file called "xtree"*** Change the "Stack Frame" combobox on the debug toolbar to your code to see what line of your code caused this. – drescherjm Nov 17 '20 at 19:05
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@drescherjm Where is this setting? – Nov 17 '20 at 20:33
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Should be on the Visual Studio toolbar somewhere at the top of the screen. – drescherjm Nov 17 '20 at 20:54