WARNING: Failed to create timer: file /scratch/work/builds/mozilla-central/mozilla-central.10-10-08.07-25/mozilla/dom/base/nsJSEnvironment.cpp, line 3387 STEPS TO REPRODUCE: 1. Start debug build of firefox. 2. Quit. ACTUAL RESULTS: At least 4 instances of this warning will be the last thing you see in your terminal output: > WARNING: Failed to create timer: file mozilla/dom/base/nsJSEnvironment.cpp, line 3387 This affects both a just-created profile as well as profile that I've used for a bit. Snippet of source that's involved here: > 3376 void > 3377 nsJSContext::PokeCC() > 3378 { [...] > 3384 CallCreateInstance("@mozilla.org/timer;1", &sCCTimer); > 3385 > 3386 if (!sCCTimer) { > 3387 NS_WARNING("Failed to create timer"); > 3388 return; > 3389 } http://mxr.mozilla.org/mozilla-central/source/dom/base/nsJSEnvironment.cpp#3375 I'm guessing the timer-creation is failing because we're in XPCOM shutdown...?

The warning was added just a few months ago, actually. Flagging as blocking the bug that added it, on the assumption that this has been happening since then.

Yeah, we should probably just remove the NS_WARNING.

Here's a patch to remove the warning (and replace it with an explanatory comment).

Comment on attachment 535774 [details] [diff] [review] fix Thanks!

Pushed: http://hg.mozilla.org/mozilla-central/rev/bda71423a5b4

d'oh, I missed that there are two copies of this same warning -- one in PokeGC (fixed by already-checked-in-patch), and another one in PokeCC. So, we still spam this on shutdown, from PokeCC. Patch coming up to silence that one, too.

Landed followup on cedar: http://hg.mozilla.org/projects/cedar/rev/4a47b6944cb5

and pushed: http://hg.mozilla.org/mozilla-central/rev/4a47b6944cb5

Comment on attachment 555054 [details] Firefox start error (I don't believe comment 11 is related to this bug at all. --> Obsoleting the screenshot attached therein.)