749311 - toolkit/devtools/debugger/tests/unit/test_breakpoint-02.js crashes:

Status: RESOLVED DUPLICATE of bug 749258

(DevTools :: Debugger, defect)

Description

[Jim Blandy :jimb]

If you apply the patches in bug 749231 and bug 749258, and then run the xpcshell tests in toolkit/devtools/debugger/tests, then test_breakpoint-02.js crashes trying to fetch a property from an 'undefined' value. The exchange is below:

- The test seems to interrupt the debuggee while it is stopped in the event loop.
- The server does not attach a 'frame' property to the packet, because there are no debuggee frames on the stack at that point.
- The test tries to fetch the packet's 'frame' property, gets 'undefined', and then tries to fetch a further property of that, and crashes.

DBG-SERVER: Got: {
  "to": "conn0.context2",
  "type": "interrupt"
}
DBG-SERVER: Got: {
  "from": "conn0.context2",
  "type": "paused",
  "actor": "conn0.pause4",
  "poppedFrames": [],
  "why": {
    "type": "interrupted"
  }
}

TEST-PASS | /home/jimb/moz/dbg/obj-bug/_tests/xpcshell/toolkit/devtools/debugger/tests/unit/test_breakpoint-02.js | [null : 39] paused == paused
/home/jimb/moz/dbg/obj-bug/_tests/xpcshell/toolkit/devtools/debugger/tests/unit/test_breakpoint-02.js:40: error: aPacket.frame is undefined

Comment 1

[Panos Astithas (he/him) [:past] (please ni?)]

The patch with the fix is in bug 749258.