Peter Vreman peter at freepascal.org
Tue Sep 21 15:46:44 CEST 2004

> Marcel Martin wrote:
>> Hello,
>> I am using fpc 1.9.5 (2004/09/15).
>> There is a problem with the unit heaptrc and the routine
>> Reallocmem. For instance
>>   var p : PLongword;
>>   Reallocmem(p,1000*4);
>>   ...
>>   Reallocmem(p,200*4); <- this instruction upset heaptrc
>> Does the problem come from Reallocmem or from the heaptrc unit?
> I am having some problems with heaptrc and reallocmem too. Using your
> example I could reproduce it in a 3 line program (instead of lazarus).
> Reallocmem moved all the data (4000 bytes in your example) to a space of
> size 800. Of course this is a bug. It is like likely that the old heap
> manager could resize memory in the same block and thus didn't need to
> move.
> Attached patch solved this issue for me. Can it be applied, or do I need
> to submit a bug report (with sample prog) for it too?

I'll apply the fix when i'm at home

The problem is the change in TraceMemsize() to return the size stored in
the information of heaptrc instead of querying SysMemsize()

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