(Not) Pointer Adjusting ruining my day and the heap? (C++)

-edit2- I was going down the wrong path. I solved it by correcting one typo and adding one line to fix an oversight that allowed me to write 4 bytes to many over an array.

-edit- maybe i am running through a wrong path. Maybe VS is showing me incorrect data but still runs the code properly (after all my code does show the correct name). But i have no idea where else my heap corruption could come from.

I havent notice any problems or incorrect data. But i have notice random crashes and suggestions that its caused by corrupting the heap.

I looked into something and this is what i notice. I have a class at address 0x00216e98. In my watch i can see the data correctly and below you can see the name ptr is 21bc00. I return the ptr as a base class (lets call it Base) which is inserted into a deque. As you can see in the deque (ls) it has one element and the first element is the correct pointer (i thought it may adjust but i guess not. But maybe it is but.....).

However the members it holds is COMPLETELY INCORRECT cdcdcd00 does not look like a valid name ptr to me and does not match to the ptr below. Also when my code is ran i somehow get the correct name and such so i dont know whats going on/wrong. It could be dynamic_cast magic but anyways if i am still grabbing the correct data i dont know how i am corrupting the heap (in both gcc and msvc).

I'll note i have diamond inheritance to the 'Base' class however li开发者_JS百科ke i said i am still pulling the correct data and i am not using virtual with base.

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If you are using linux you might be able to use Valgrind. This is an exellent tool for finding heap related issues.

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In debug mode cdcdcdcd is deleted uninitialized memory that the debug heap is marking for you.

If you see that, you are using a pointer to a deleted structure. memory that was allocated but never given a value.