Created attachment 107173 [details]
Testcase

Product Version: NetBeans IDE Dev (Build 201103150400)
GlassFish Server Open Source Edition 3.1 (build 43)

If a debug session is started, and the application was deployed and has already run, then after a statement is added and saved with deploy on save, a  breakpoint cannot be submitted on it, or subsequent stepping steps on comments not statements.


How to reproduce:

- Start GlassFish in debug mode.
- Undeploy all applications
- Restart GlassFish
- Menu|Debug|Attach Debugger|Socket Attach
- Clean and build the attached application
- Deploy the application.

In class HomePage, in the constructor, insert the following line below line 5
        this.getSession().bind();
and save the class.

NetBeans deploys the class.

Set a breakpoint on the new line.

I get this error:

Attaching to tower:9009
User program running
Not able to submit breakpoint LineBreakpoint HomePage.java : 28, reason: No executable location available at line 27 in class page.HomePage.
Invalid LineBreakpoint HomePage.java : 28

Please note different line numbers 27 and 28.

Alternatively, I have seen another error after the breakpoint was set successfully:

In the services window, under GlassFish Server 3.1, refresh Applications
Right click on PanelReplacement, Open in Browser.
In the browser, click "Home"

After stepping over the breakpoint, the debugger would step on comments not on the next line of code.

In bug 189744, Martin Entlicher commented:
"Please note that the save does not recompile and upload the application to the
server. Therefore the breakpoint really can not be submitted ..."

Here I think that due to settings "Deploy on Save", "Compile on Save", this actually happens.

In my server properties, I have tried both settings on and off "Preserve Sessions Across Redeployment"