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Top Forums Programming [C] help with string handling memory leak Post 302292438 by VRoemer on Saturday 28th of February 2009 12:15:14 AM
Old 02-28-2009
Oh, thats interesting I don't remember leaving that there. Thanks for catching that. ok

Ok then, I have a small question to impose onto this then. If I add this to the very end of the function. Why does it cause a memory leak?

Code:
    free(s); 
    s = NULL;

    s = strdup( data+19 );
    while((*s) && (*s != '\n'))
    {
        s++;
    }
    s++; // skip the newline
    printf( "%s", s);
    free(s);


is it because I reasign s? Becuase I reuse data? If always crashes on that final 'free'

valgrind reports, with and without the final free, a loss of the same amount of bytes.


EDIT:
I think I know why, because I moved the pointer right? The fix would be to make an aditional pointer to point at the beginning i believe.
 

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DELLOFIG(3)						      MBK PHYSICAL FUNCTIONS						       DELLOFIG(3)

NAME
dellofig - delete and free a logical figure ORIGIN
This software belongs to the ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Universite Pierre et Marie CURIE, in Paris, France. Web : http://asim.lip6.fr/recherche/alliance/ E-mail : alliance-users@asim.lip6.fr SYNOPSYS
#include "mlo.h" int dellofig(figname) char *figname; PARAMETER
figname Name of the figure to be deleted DESCRIPTION
dellofig deletes the figure called figname from the list of logical figure in memory. All the lists of elements belonging to the figure are also deleted and freed. RETURN VALUE
dellofig returns 1 if the figure was delete, and 0 if no figure called figname was present in memory. EXAMPLE
#include "mlo.h" void delete_na2_y() { if (dellofig("na2_y")) (void)fputs("deleted na2_y successfully", stdout); else (void)fputs("na2_y not present in ram !", stdout); } SEE ALSO
mbk(1), lofig(3), addlofig(3), getlofig(3), loadlofig(3), savelofig(3), flattenlofig(3), rflattenlofig(3). BUG REPORT
This tool is under development at the ASIM department of the LIP6 laboratory. We need your feedback to improve documentation and tools. ASIM
/LIP6 October 1, 1997 DELLOFIG(3)
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