I am encountering a problem while using a DmQuickSort, which produces a
"DataMgr.c Line 6550 Index out of range" error. The sort is doing nothing
more than a "StrCompare(&r1->fieldX,&r2->fieldX) where r1 and r2 are the
two pointers passed in to the comparison routine. The observations are as
follows:
If I load 16368 records, and go to the application and perform a sort,
everything is fine. If I now add 22 more records, so I'm up to 16390 (and
past a magic? 16384 barrier), now when I try to sort I get the crash
halfway through the sort (I know from the time elapsed that the crash is
not occuring when the sort finishes and the program goes on to do
something else). This can't be a memory problem because, on the system
I'm trying this on, the database takes up 753K and there is only 505K
free memory, but those numbers don't change significantly between the
success at 16368 records and the failure at 16390. So I therefore
conclude that there is something in DmQuickSort which can't handle a sort
larger than 16384. Hopefully this isn't right, and there's a better
explanation, but I don't have one.
Steve Patt
President, Stevens Creek Software
http://www.stevenscreek.com/palm
Best PQA ("ePQA"), PalmSource 99
Best Application ("PizzaScan"), Palm Developer's Conference 1998
First printing software for the Palm - September, 1997
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