Hi guys,
I hope you can help me with this one. Using FPC 2.0.4 and Lazarus 0.9.23
rev.11447M. I am converting my main Delphi project to Lazarus under
Linux/GTK1 and I get an odd error. As far as I can determine the error
happens when a function in another unit is called the second time.
The error dialog says:
Raised exception class RunError(202)"
The Execution Paused dialog after that says:
Adress: $08062902
Procedure: SYSTEMHANDLEERRORADDFRAME$LONGINT$POINTER$POINTER
gdb backtrace:
(gdb) bt
#0 0x0805f482 in fpc_raiseexception ()
#1 0x0818d88d in ?? ()
#2 0x00000000 in ?? ()
(gdb)
If I run under gdb without putting in "break fpc_raiseexception", when
the error happens the console shows:
TApplication.HandleException Unknown Run-Time error : 202
Stack trace:
$08062511
$08137BA8 XMLWRITEDD, line 727 of ConvUnit.pas
$080E7A51 TMZ__SVD, line 102 of MZJ.pas
$080F1D70 TPZ__CDDA, line 8603 of PZJ.pas
$080AD251 TH__UDSSCR, line 12371 of HJ.pas
$080EFD2F TVZ__CU1CLICK, line 171 of VZJ.pas
$08205826 TCONTROL__CLICK, line 1993 of ./include/control.inc
$0821712D TBUTTONCONTROL__CLICK, line 57 of ./include/buttoncontrol.inc
$082177F1 TCUSTOMBUTTON__CLICK, line 186 of ./include/buttons.inc
$08217C1D TBUTTON__CLICK, line 312 of ./include/buttons.inc
$082179A8 TCUSTOMBUTTON__WMDEFAULTCLICKED, line 241 of
./include/buttons.inc
$0805EA00
$08204DDE TCONTROL__WNDPROC, line 1545 of ./include/control.inc
$081FC5BA TWINCONTROL__WNDPROC, line 3498 of ./include/wincontrol.inc
$08299885 DELIVERMESSAGE, line 3576 of gtkproc.inc
$082B54EC GTKWSBUTTON_CLICKED, line 958 of gtkwsstdctrls.pp
$B7CE8B06 LAZARUSPACKAGEINTF_finalize, line 49 of ./unix/cupsdyn.pp
Which seems to confirm that the ConvUnit.XMLWRITEDD function is being
called from the TMZ_SVD procedure when the error happens. If I put in a
showmessage() as the first thing in XMLWRITEDD code, it does not get
shown. There is no problem running this code under Delphi, and looking
at it I don't see anything abnormal it that location. One strange thing
is that I commented out some code in the TH__UDSSCR procedure after the
point where the code branches to the error location, which code-wise is
quite far away, to trace where its happening and problem disappeared,
but then reappeared even after commenting and uncommenting the same code
to trace it. If I run without a debugger, if I click to ignore the
error, the program runs fine and will even run through the same code
again without any further errors. There is at least one other different
location in the program where a seemingly normal function call is
causing an error for no apparent reason. Any ideas?
George
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