Sorry, I located the wrong file!

I will try it again & post the results!

Still the same problem!
Compile failed

Try building with NOWERROR=1 as I suggested for Mac PowerPC. Unfortunately Aaron sneak-attacked the release so I wasn't able to run it against the gauntlet beforehand (although that specific warning is invalid and a sign of a broken version of GCC).

Vas: I was able to fix the Cocoa debugger to behave after Googling the error, so no worries.

I have other debugger work to clean up and submit anyway - I'll hopefully have it done in a couple of days.

Cool. Make sure it's based on the debugosx.m/.h from latest MESS SVN and you'll be fine.

It's weird. I didnt get that src/emu/ui.c error when i compiled just before u3. But I did get it when I compiled from mess svn. No idea how that happened, my mame tree is clean.

Oh well. It was mostly working

Yeah. I'm also a little surprised later Xcode didn't care about the "ObjC won't call C++ constructors" issue. I guess that's something Apple eventually changed, although since the debugger explicitly initialized the class members and that's all the constructor did it would work out anyway.

Same problem here...
Target OS is Linux (Debian Lenny) i386
Compiler is gcc 4.2

Changing line 1648 of the file /src/emu/ui.c to 'device_execute_interface *exec = NULL;' fixed it for me.

Incidentally, that warning is a bug in GCC that was fixed for 4.3 (Red Hat had been patching it in the Fedora and RHEL packages since 4.1.something). The variable isn't actually uninitialized.