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POHEAP CORRUPTION DETECTED: after Normal block(#151) at 0x00DB4E70
 

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  1. POHEAP CORRUPTION DETECTED: after Normal block(#151) at 0x00DB4E70
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    <p>I have implemented a List for my class Word, and have HEAP CORRUPTION DETECTED, when program trying to delete my List. It goes into loop in destructor and delete first element, then when he goes second time, and trying to destroy "new" head I get Heap Corruption Error. I don't understand why it's going wrong. Any help would be much appreciated.</p> <p><strong>Word.h:</strong></p> <pre><code>#include &lt;cstring&gt; class Word { protected: char* word; char* type; public: Word(); Word(char ); Word(char *); Word(char *, int); Word(const Word&amp;); Word&amp; operator=(const Word &amp;); void setWord(char); void setWord(char *); void setWord(char*, int); void setType(char); void setType(char*); void setType(char*, int); ~Word(); }; </code></pre> <p><strong>WordList.h:</strong></p> <pre><code>#include "Word.h" #include &lt;cstdlib&gt; class WordList { public: struct Node { Word data; Node *next, *prev; //~Node(); }; Node *head; Node *tail; WordList(); ~WordList(); void add(Word &amp;d); }; </code></pre> <p><strong>WordList.cpp:</strong></p> <pre><code>#include "WordList.h" WordList::WordList(void) { head = nullptr; tail = nullptr; } WordList::~WordList(void) { while(head != nullptr) { Node *n = head-&gt;prev; delete head; head = n; } } void WordList::add(Word &amp;d) { Node *n = new Node; n-&gt;data = d; // I overload =, and it copies information from d to data n-&gt;next = head; if (head!=nullptr) head-&gt;prev = n; if(head == nullptr){ head = n; tail = head; } else head = n; } </code></pre>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USozeron
    1. USozeron
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. COTry running it under the Application Verifier - you might hit a breakpoint when the corruption occurs.
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      1. POHEAP CORRUPTION DETECTED: after Normal block(#151) at 0x00DB4E70
      1. USPete
 

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