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POC++ - Seg Fault from Deleting Dynamic Array
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  1. POC++ - Seg Fault from Deleting Dynamic Array
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    copied!<p>Having some trouble deleting a dynamically allocated array, and I'm not 100% sure why. The only thing I do to this array is copy over some values from it individually (in a for loop), in another routine, which is verified to work correctly.</p> <p>Here is the declaration in class:</p> <pre><code>std::complex&lt;float&gt; * frameData; </code></pre> <p>instantiation in constructor:</p> <pre><code>this-&gt;frameData = new std::complex&lt;float&gt;[n]; srand( time(NULL) ); std::complex&lt;float&gt; randUnityRoot; for( int i = 0; i &lt; this-&gt;n; i++){ randUnityRoot = std::polar(1.0, 2*M_PI * (rand() % 1000000)/1e06); this-&gt;frameData[i] = randUnityRoot; } </code></pre> <p>deletion in destructor(this is the line 70 mentioned in the backtrace):</p> <pre><code>delete[] this-&gt;frameData; </code></pre> <p>gdb backtrace after segfault at program completion:</p> <pre><code>(gdb) f 4 #4 0x00007ffff7bc579c in Frame::~Frame (this=0x602940, __in_chrg=&lt;optimized out&gt;) at Frame.cpp:70 70 delete[] this-&gt;frameData; (gdb) f 3 #3 0x00007ffff7669b96 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) f 2 #2 0x00007ffff765f39e in ?? () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) f 1 #1 0x00007ffff7624b8b in abort () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) f 0 #0 0x00007ffff7621425 in raise () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) </code></pre> <p>I've been staring at this for a while and am right out of ideas. I figured I would turn to the hive mind. Please let me know if you would like any more information. Thanks!</p> <p>EDIT: I updated everything to a vector and vector* based approach.</p> <p>No segfaults :).</p> <p>To generate some sort of "knowledge gained" from this however, in another class I had called something like:</p> <pre><code>std::complex&lt;float&gt; * frameGet; frameGet = this-&gt;Frame-&gt;getFrame(); // Do stuff with frameGet //THIS NEXT LINE IS THE BAD PART delete[] frameGet; </code></pre> <p>Half question, half assertion: delete[] frameGet calls delete on original array content? If frameGet needs to be deleted should do something like:</p> <pre><code>frameGet = NULL; delete frameGet; </code></pre>
 

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