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POC++ overload >> for ifstream on mac pointer being freed was not allocated
 

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    <p>I am trying the following code and it fails with the following error: </p> <pre><code>malloc: *** error for object 0x10000d8c0: pointer being freed was not allocated *** set a breakpoint in malloc_error_break to debug Program received signal: “SIGABRT”. </code></pre> <p>Here are contents of file input.txt : It has full permissions and file is successfully opened in debugger. Please help.</p> <pre><code>Jacob Anderson Michael Thomson Joshua Smith Mathew Matheis Ethan Evans Emily Drake Emma Patterson Madison McPhee Hannah Briens Ashley Schmidt </code></pre> <p>.</p> <pre><code>#include &lt;iostream&gt; #include &lt;vector&gt; #include &lt;functional&gt; #include &lt;algorithm&gt; #include &lt;list&gt; #include &lt;fstream&gt; #include &lt;string&gt; #include &lt;stdio.h&gt; using namespace std; struct DataType { string lastname; // (Key) Student's Last Name string firstname; // Student's First Name string getKey () const { return lastname; } // Returns the key field }; ostream&amp; operator &lt;&lt; (ostream&amp; os, DataType myData) { os&lt;&lt;myData.firstname&lt;&lt; " "&lt;&lt;myData.lastname; return os; } bool operator &lt; (DataType lhs, DataType rhs) { if (lhs.firstname &lt; rhs.firstname) return true; return false; } int main() { ifstream studentFile ("input.txt"); // Student file list &lt;DataType&gt; students; // Students DataType currStudent; // One Student (has firstname,lastname) if (! studentFile.is_open()) { return -1; } while (studentFile &gt;&gt; currStudent.firstname &gt;&gt; currStudent.lastname) { students.push_back(currStudent); } list&lt;DataType&gt;::iterator i = students.begin(); while (i != students.end()) { cout &lt;&lt; *i &lt;&lt; endl ; ++i; } } </code></pre>
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    1. COIs this the problem?: http://stackoverflow.com/questions/2234557/c-using-getline-prints-pointer-being-freed-was-not-allocated-in-xcode
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