I'm currently running FPC 2.4.4 (built from SVN) on Windows Server 2008 R2 cross-compiling targeting Win64/x86_64. I retrieved lazarus 0.9.30.2_rc2 from subversion and built the LCL to be able to target win64/x86_64 for GUI apps as well. I then follow these steps:

1. Create a new application
2. Add a TMainMenu to the form
3. Add a single menu item to the main menu

I compile the application for win64/x86_64 and run it. Upon running the app, I get this:

Range check error.
Press OK to ignore and risk data corruption.
Press Cancel to kill the program.

The backtrace shows:

C:\temp> .\project1.exe
TApplication.HandleException Range check error
Stack trace:
$0000000000538059 TWINCONTROL__DOKEYUPBEFOREINTERFACE, line 5857 of ./include/wincontrol.inc
$000000000053B49D TWINCONTROL__CNKEYUP, line 6970 of ./include/wincontrol.inc
$000000000040C7D6 TOBJECT__DISPATCH, line 472 of C:/cygwin/home/Administrator/devel/fpc/fpc-2.4.4/rtl/inc/objpas.inc $0000000000536085 TWINCONTROL__WNDPROC, line 5241 of ./include/wincontrol.inc
$000000000041FAE1 TCUSTOMFORM__WNDPROC, line 1362 of ./include/customform.inc
$00000000005C12FE DELIVERMESSAGE, line 110 of lclmessageglue.pas $000000000056D6E8 WINDOWPROC, line 2441 of win32callback.inc $00000000005C3B07 CUSTOMFORMWNDPROC, line 357 of win32wsforms.pp $000000007684C3C1
$000000000042B442
$000000000042BB7A
$000000000042FBDE
$000000000042BAF4
$0000000000402AF8

I tried googling for a similar issue but didn't see anything specific to TMainMenu with win64. I'm sort of baffled by this, since I can't be the only one out there trying to target win64.

Has anyone else seen this?

-SG