Thanks for the suggestion. With valgrind I found all the problems. That the variable was local to the constructor was not a problem.<div>The main problem was that I was later assigning another value, over-writing the value from new. And of course that meant the</div>
<div>delete couldn't work either. I have a larger program that does extensive new's and deletes and I have had it run for hours without</div><div>running out of memory. I wrote that several years ago and I guess I've gotten rusty.<br>
<br><div class="gmail_quote">On Sun, May 13, 2012 at 12:04 AM, Harold Lee <span dir="ltr"><<a href="mailto:harold@hotelling.net" target="_blank">harold@hotelling.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Using delete[] for an array allocated with new[] is correct, so I<br>
don't think you've given us enough information to find the bug.<br>
<br>
Are you getting any compiler warnings or errors?<br>
Have you tried compiling with -Wall and -Wextra?<br>
Are any of these overwritten variables pointers into the array var?<br>
Could the array size stored at address (var - 4) have been overwritten<br>
by accident by some other code?<br>
Have you tried using valgrind to automatically find an accidental<br>
overwrite earlier in execution?<br>
<span class="HOEnZb"><font color="#888888"><br>
Harold<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
On Sat, May 12, 2012 at 11:38 PM, Jeff Newmiller<br>
<<a href="mailto:jdnewmil@dcn.davis.ca.us">jdnewmil@dcn.davis.ca.us</a>> wrote:<br>
> It did make it to me, but<br>
><br>
> a) I am out of town away from computers, and<br>
><br>
> b) without a working example I probably would not look at it very closely<br>
> ---------------------------------------------------------------------------<br>
> Jeff Newmiller The ..... ..... Go Live...<br>
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> ---------------------------------------------------------------------------<br>
> Sent from my phone. Please excuse my brevity.<br>
><br>
> Richard Harke <<a href="mailto:paleopenguin@gmail.com">paleopenguin@gmail.com</a>> wrote:<br>
><br>
>>My last post seems to have gotten lost so I'll try again.<br>
>><br>
>>I'm working on a small C++ program. In one of the constructors I<br>
>>create an array with<br>
>>double * var = new double [size] After use, before exiting the<br>
>>constructor I return the memory with delete [] var But after return<br>
>>from the delete, several private class variables are written over.<br>
>>I have checked that these variables are correct just before the delete<br>
>>call and are modified right after. Does anyone have any idea what is<br>
>>going on?<br>
>><br>
>>I'm running debian squeeze for amd64 with gcc 4.4.5 This morning I<br>
>>did an apt-get upgrade to be sure I had any recent fixes.<br>
>><br>
>>Richard Harke<br>
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