Segmentation fault when free [SOLVED]

[Giorgos Keramidas]

On Sat, 20 Sep 2008 07:04:03 -0700 (PDT), Unga <unga888 at yahoo.com> wrote:
>On Sat, 9/20/08, Giorgos Keramidas <keramida at ceid.upatras.gr> wrote:
>>> : free(0xbfbfc9c9)
>>>
>>> 1. This clearly shows my program is trying to free a memory that
>>> has not been allocated. How it could have happened?
>>
>> Aha.  This looks remarkably like an address in the runtime stack.  It
>> usually happens when you have a function that returns the address of
>> a 'local' variable, instead of a newly allocated heap area, i.e.:
>>
>>     char *
>>     function(void)
>>     {
>>         char buffer[100];
>>
>>         return buf;
>>     }
>
> This was indeed the case, worst yet, I was trying to free a part of
> the buffer (as per your example above) by mistake which was not
> allocated by malloc.
>
> Thank you all who helped me.

Great!  You are welcome, of course :)