Re: Solved: big memory leak in GSString

[Pirmin Braun]

after implementing a compare: method in PBIDMLine and replacing the 
sortUsingKeyOrderArray: by sortUsingSelector:@selector(compare:) it works; the 
memory consumption is back down to 57 MB. Thanks to all who helped!

btw. the sortUsingKeyOrderArray: wasn't from GNUStep, I guess it came from GDL; 
it looked like that:

- (void) sortUsingKeyOrderArray: (NSArray *)orderArray
{
  if ([self count] > 1)
    {
      [self sortUsingFunction:compareUsingSortOrderings  context:orderArray];
    }
}

static NSComparisonResult
compareUsingSortOrderings(id    left,
                          id    right,
                          void* vpSortOrders)
{
    NSArray           *sortOrders = (NSArray *)vpSortOrders;
    NSComparisonResult r = NSOrderedSame;
    unsigned int       i;
    unsigned int       sortOrdCnt = [sortOrders count];

    /* Loop over all sort orderings until we have an ordering difference. */
    for (i=0; (r == NSOrderedSame) && (i < sortOrdCnt); i++){
        PBSortOrdering *sortOrd  = [sortOrders objectAtIndex: i];
        NSString       *key      = [sortOrd key];
        SEL             compSel  = [sortOrd selector];
        id              leftVal  = [left  valueForKeyPath: key];
        id              rightVal = [right valueForKeyPath: key];
        NSComparisonResult (*imp)(id, SEL, id);

        if(!leftVal && !rightVal)continue;
        if(!leftVal)return NSOrderedAscending;
        if(!rightVal)return NSOrderedDescending;

        imp = (NSComparisonResult (*)(id, SEL, id))[leftVal methodForSelector: 
compSel];
        NSCAssert3(imp!=NULL,
                   @"Invalid comparison selector:%@ for object:<%@ 0x%x>",
                   NSStringFromSelector(compSel),
                   NSStringFromClass([leftVal class]),
                   leftVal);
        r = (*imp)(leftVal, compSel, rightVal);

    }

    return r;
}


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