Emulator

1. Game Name and ID (as it appears in right click > properties: "GZ2P01",
   "RSBE01", etc):
   Any

2) What is the expected output? What do you see instead?
Working stuff. Crash (at least in debug builds)

3) Did the game ever work correctly (i.e. not have this problem) on an
earlier version of dolphin? Please specify the exact revision when the
problem began.
Ya, before gx-optimization merge

4) What steps will reproduce the problem?

1. Compile Dolphin
2. Run Dolphin
3. Start a game (using D3D9)

5) What version of dolphin are you using (32bit/64bit along with the
version as it appears in the title bar, etc)? Do not say 'latest version'
this changes multiple times a day.
On what operating system, drivers, and hardware? Be sure to list OS,
graphics driver information, and video card model if you are having
graphics problems, for example.
Any after the gx-optimization merge

6) Please provide any additional information below.
UpdateViewport is getting called with invalid values, i.e. zero width/height/etc. The D3D9 debug runtime complains about this; adding a sanity check fixes the problem.

7) Attachments. IMPORTANT! We have a limited storage quota on
GoogleCode, so please use a 3rd party host for screenshots or any other
files (http://min.us/ for example).