[Lazarus] heap trace

[Martin]

On 06/03/2012 13:55, Antonio Fortuny wrote:
> Hi all.
>
> Sorry if this is a silly question but I can't find the answer into 
> this forun.
> How to get the function names in the heaptrc trace ?
> I use in project options:
> in Linking options:
>     generate debug info for dgb
>     show line numbers
>     use symbol file for gdb
>     use "heaptrc"

that sounds around correct.

Please test those settings on a dummy project
A simple form, in formcreate, create a new object, and never free it
    TObject.Create;


Maybe test with explicit "dwarf" or "stabs" ?


Your FPC is "as installed" or self compiled?

>
> in project .pas the very first line is:
>   SetHeapTraceOutput(ChangeFileExt(ParamStr(0), '.log'));
>
> File program.log is created ok:
>
> Heap dump by heaptrc unit
> 3564 memory blocks allocated : 1746202/1754304
> 3563 memory blocks freed     : 1746174/1754272
> 1 unfreed memory blocks : 28
> True heap size : 425984 (96 used in System startup)
> True free heap : 429024
> Should be : 425792
> Call trace for block $001F14E8 size 28
> /*  $0061997C
>   $0040D5A4
>   $00411EC1
> */How to get details about the source code generating those memory leaks ?

The first line, looks like it may not be in your code.

It may be there is no info for the $0061... address.

the code that generates the dumps, stops adding line info, once it has 
failed a single line....
See: http://bugs.freepascal.org/view.php?id=13518

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