STR: 1. Download this file (e.g. by clicking this link and picking a save location): http://nightly.webkit.org/files/WebKit-SVN-source.tar.bz2 ---> At the moment, the download will fail, and will just produce a 0-byte saved file on your filesystem. BUT: 2. Inspect the download notification that Firefox pops up. EXPECTED RESULTS: Firefox reports that the download fails, and/or reports that the saved file was 0 bytes. ACTUAL RESULTS: Firefox tells me that it (instantly) downloaded a file of size "1.8 GB" (NOTE: I haven't been able to download the Webkit tarball with any browser / download manager for the last couple days, so I suspect their server is temporarily misconfigured or something. Whenever they fix it, this bug probably won't be reproducible at that URL anymore.)
Created attachment 653417 [details] curl output Here's the stderr log from attempting to download the file with "curl -vvv", in case it helps.
Note that curl ends by reporting... > curl: (18) transfer closed with 1916464829 bytes remaining to read ...which correctly tells me: "Uh oh, I expected 1.8 GB more data than I received" (contrast that to Firefox's download manager UI, which implies that it received all 1.8 GB of data)
Summary: With certain download failures, download manager reports huge file size instead of (correct) 0 bytes → Download Manager says it downloaded a file with the (large) anticipated size, when in fact it got a 0-byte file
Version: unspecified → Trunk
Version info: I'm running up-to-date Nightly on Ubuntu 12.10 "quantal" prerelease. about:support: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Firefox/17.0 about:buildconfig: Built from http://hg.mozilla.org/mozilla-central/rev/c676b554c7bb
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