** Description changed:
Impact
------
SpiderMonkey (or mozjs) is Firefox's JavaScript engine. It is not
well-supported by Mozilla. Generally, someone at Mozilla makes only one tarball
release per Firefox ESR. For 38, this was done around 38.2. Fedora and Arch
Linux build their mozjs38 using the final Firefox ESR tarball (38.8) which has
7 more months of high-priority bugfixes included.
https://developer.mozilla.org/en-
US/docs/Mozilla/Projects/SpiderMonkey/Releases/38
A quick review of the git log showed that there are multiple high-
priority security fixes in this update.
Test Case
---------
Install the update.
Reboot
Log into GNOME Shell. Does it seem to work ok?
Regression Potential
--------------------
The gjs maintainer has so far only tested with the original release tarball,
but the risk is mitigated by being used by Fedora. Mozilla does tend to be
cautious about updating its ESR branch.
Other Info
----------
The Firefox tarball is very slow and difficult to work with since it has so
many files. It was too big for the new debian/copyright Files-Excluded repack (
https://bugs.debian.org/855464 ). I used the older debian/repack scripts to cut
the extra files.
With the repack, I lost the INSTALL, LICENSE and README files which are
not included in the Firefox tarball since I didn't know how to use the
repack script to inject a copy of those files. It did not seem important
enough to use a quilt patch to restore them since they aren't shipped in
the resulting binary packages.
js/src/ctypes/libffi/doc/libffi.info and js/src/jit-test/tests/sunspider
/check-string-unpack-code.js were removed because
debian/README.source says to remove them.
Here's a visual diff of the new tarball:
-
https://anonscm.debian.org/git/pkg-gnome/mozjs38.git/commit/?h=debian/unstable&id=ae6f925b6
+ https://git.launchpad.net/~jbicha/ubuntu/+source/mozjs38/commit/?id=c324e07
And here's a git log (the original mozjs38 tarball is from mid-September 2015)
https://github.com/mozilla/gecko-dev/commits/esr38/js/src
+
+ Testing Done
+ ------------
+ I have tested that this package builds and that GNOME Shell runs with the
built package.
+
+ Sponsoring
+ ----------
+ I pushed my work to a temporary git repo because I think it should be fairly
easy to sponsor from there:
+ https://git.launchpad.net/~jbicha/ubuntu/+source/mozjs38/
+
+ I also enabled the build tests (with 2 patches to make them work) and made
them fatal on some architectures.
+ If you decide you don't want that in this release, just skip the final commit.
** Changed in: mozjs38 (Ubuntu)
Status: New => Confirmed
--
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https://bugs.launchpad.net/bugs/1683103
Title:
Use final Firefox 38 ESR tarball to build mozjs38
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