GWT not hitting breakpoints in hosted mode

With Eclipse 3.4.2 (Ganymede), Google Web Toolkit, and JDK 1.6.0_14, the debugger seemed to ignore my breakpoints while running the hosted-mode browser even though the breakpoint indicators had checkmarks while the app was running. I added calls to GWT.log, and the server's log output demonstrated that control was definitely passing through my breakpoints.

Google's Rajeev Dayal confirms the problem, and Eclipse has a ticket associated with this issue.

One workaround is falling back to JDK 1.6.0_13. If you don't have it yet, download it from Sun, and tell Eclipse about it:

1. In Eclipse select Window > Preferences.
2. In the Preferences dialog, select Java > Installed JREs.
3. In the Installed JREs panel, select the Add... button.
4. In the Add JRE dialog, select Standard VM and then the Next button.
5. Select the Directory... button next to the textbox labeled JRE home and navigate to the JRE bundled with JDK 1.6.0_13 (e.g., C:\Program Files\Java\jdk1.6.0_13\jre). This should add several JARs to the list of JRE system libraries.
6. Select the Finish button.
7. Back in the Installed JREs panel, check the JRE for update 13, and then click

Set breakpoints, launch the debugger, and your application should now be stopping when control reaches the specified lines of code!

UPDATE: early-access release 6u18 is reported to fix this problem.