Error Debug mode
lazarus / 12-Debugger

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J-23 · 2020-10-17 21:57

Hello,
I have an application that works fine in Relase mode.

The problem occurs during Debugging:

I have code that looks like this:
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 procedure
TBaseWizardConnection.RecomededHostActive(  ConnectionFrame:
TConnFrame;  DatabaseConnectionVersionList:
TDatabaseConnectionVersionList);var  Item:
TDatabaseConnectionVersion;  i: Integer;begin  with ConnectionFrame
do  begin    DatabaseConnectionVersionList.DatabaseDriver :=
ComboBoxDatabaseType.Items[ComboBoxDatabaseType.ItemIndex];   
DatabaseConnectionVersionList.Execute;    for i := 0 to
DatabaseConnectionVersionList.Count -1 do    begin      Item :=
DatabaseConnectionVersionList.Items[i];      if Item.Version = ComboBo
xDatabaseTypeVersion.Items[ComboBoxDatabaseTypeVersion.ItemIndex]
then      begin //this error        with ConnectionFrame.EditHost do 
     begin          if Item.RecomendedHost then          begin       
   ReadOnly := False;            Color := clDefault;          end    
    else          begin            Clear;            ReadOnly :=
True;            Color := clForm;          end;        end;       
Break;      end;    end;  end;end; 
I don't know where to look for the cause of the problem.

The screen with the error and debugger options:
https://drive.google.com/file/d/1aMCwpNgkmr5BRzbU265YNoAUCjDD1FOt/view
?usp=sharing
https://drive.google.com/file/d/1Z7JOELVzMLi1FaYdU6dSeVz6J27B_GM5/view
?usp=sharing

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J-23 · 2020-10-18 01:54

Hello,
The problem is that the Debugger points to the wrong line, hence it
points to the line from the begin

The problem, however, concerns this line:
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 with
ConnectionFrame.EditHost do
When we hover the cursor over the ConnectionFrame we have the message
"... not found" hence the errors I showed on the screenshots

This is an obvious bug in FPC 3.3.1 and we cannot debug it

Check if it is similar with you.

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bytebites · 2020-10-18 06:03

I don't know how to debug pictures.

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J-23 · 2020-10-18 13:52

Quote from: bytebites on October 18, 2020, 08:03:26 amI don't know how
to debug pictures. 

Hello,
You mean I didn't give the full code?

Well, the full code is not needed because it is not a problem with the
code but with the debugger

You have the images under the links. Check if your Lazarus is working
properly in the given settings

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bytebites · 2020-10-18 17:50

Sometimes does not work.
Failing code example.
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
tmp.call(cl, value, ret);Inspecting of variable "ret" causes crash.
Was this information useful? No.

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Martin_fr · 2020-10-18 19:25

GDB sometimes troubles extenal libs.  In tools>debugger is an opiton
DisableLoadSymbolsForLibraries or similar.... maybe