1.4.4 Generating Exception Errors in Lazarus Include Files

[oopman]

I have a program that ran fine under the previous version. Recompiled with 1.4.4 and now I get exceptions?

"Project x raised exception class 'External: SIGSEGV'. In file '.\include\customform.inc' at line 2188"

procedure TCustomForm.Hide; // file customform.inc
begin
  Visible := False; << line 2188
end;   

If you hover over line 2188 you see
Visible = <Error>

If you run program from Windows Explorer you get an "Access violation."

[marcov]

Then probably hide was called on a form not yet created or already destroyed.

Using fields can/will then raise an exception

[oopman]

What's strange is that this error never happened before under previous releases and I get the error immediately upon running it. I had a secondary form and tried deleting it from the project but that didn't help either?

[Martin_fr]

Well do you have example code that can be used to reproduce the issue?

Its hard to say anything about it, without any information about the calling code.

[oopman]

I'm trying to create code that replicates the problem as the existing program was working fine and I'm going to have to tear it apart until I can find the offending code. It crashes on initialization so it is something early on and I'm not doing anything tricky and it worked before that's what is confusing me. I simply took a copy of the code that has been running for months then cleaned and recompiled it with no errors.

[Martin_fr]

How about a stacktrace?


does your app has just the one form? is it autocreated?

[oopman]

The program has a single form with multiple tabs and is autocreated. It's difficult to create sample code that replicates the problem as this is a fairly large program that worked fine until 1.4.4 and I'm trying to figure out how to replicate the problem in a small demo.