Possible bug in FpDebug
lazarus / 12-Debugger

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440bx · 2024-11-13 07:27

Hello,

Consider the following code:Code: Pascal  [Select][+][-]window.onload
= function(){var x1 = document.getElementById("main_content_section");
if (x1) { var x = document.getElementsByClassName("geshi");for (var i
= 0; i {$APPTYPE CONSOLE} program _absolute; type  TTABLE   = record 
 count     : DWORD;    item      : array[0..9] of dword;  end; type 
TRECORD  = record    Field1     : TTABLE;    Field2     : TTABLE; 
end;  procedure TheProc(InoutParameter : TRECORD);var  count1    :
DWORD absolute InoutParameter.field1.count;  count2    : DWORD
absolute InoutParameter.field2.count;   Parameter : TRECORD absolute
InoutParameter;            var  OtherVar : DWORD; begin 
writeln('count1: ', count1);  writeln('count2: ', count2);    OtherVar
:= count1;   count2   := count1 * 3;end; var  TheVariable :
TRECORD; begin  TheVariable.Field1.count := 100; 
TheVariable.Field2.count := 200;   TheProc(TheVariable);   readln;end.
   
Set to watch the variables "count1", "count2" and "Parameter" in the
procedure TheProc, FpDebug cannot display "count1" nor "count2" but
displays 'Parameter". Please see attachment.

Either FPC is not emitting symbols for "count1" and  "count2" or
FpDebug is not interpreting the symbols for those 2 variables
correctly.

Comments welcome.

FPC v3.2.2 & Lazarus v3.99 (2024-10-23)

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bytebites · 2024-11-13 07:45

FPC trunk compiled code shows count1 and count2 correctly.

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440bx · 2024-11-13 08:03

Quote from: bytebites on November 13, 2024, 08:45:01 amFPC trunk
compiled code shows count1 and count2 correctly.
FPC v3.2.2 outputs the values of count1 and count2 correctly too.  It
is FpDebug's watch window that does not show the values.   Did you
mean to say that FpDebug shows the values if the code is compiled with
FPC trunk ?

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bytebites · 2024-11-13 08:07

Yes, in watches and local variables windows.

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440bx · 2024-11-13 08:31

Quote from: bytebites on November 13, 2024, 09:07:35 amYes, in watches
and local variables windows.
Then it sounds like it's a bug in the current version of FPC. 

Just curious, what version of Lazarus did you test with ?

Thanks

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bytebites · 2024-11-13 08:37

Laz 3.99

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440bx · 2024-11-13 08:43

Quote from: bytebites on November 13, 2024, 09:37:53 amLaz 3.99
Great.  Thank you!

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Martin_fr · 2024-11-13 15:04

It's a problem in FPC. FPC does not add debug info for those.