[Bug 1879481] Re: update gcc-9 and gcc-10 packages for focal

[Łukasz Zemczak]

Hello Matthias, or anyone else affected,

Accepted gcc-9-cross into focal-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/gcc-9-cross/21ubuntu4 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
focal to verification-done-focal. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-focal. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: gcc-9-cross (Ubuntu Focal)
       Status: New => Fix Committed

** Changed in: gcc-9-cross-ports (Ubuntu Focal)
       Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/1879481

Title:
  update gcc-9 and gcc-10 packages for focal

Status in gcc-10 package in Ubuntu:
  Confirmed
Status in gcc-10-cross package in Ubuntu:
  New
Status in gcc-10-cross-mipsen package in Ubuntu:
  New
Status in gcc-10-cross-ports package in Ubuntu:
  New
Status in gcc-9 package in Ubuntu:
  Confirmed
Status in gcc-9-cross package in Ubuntu:
  New
Status in gcc-9-cross-mipsen package in Ubuntu:
  New
Status in gcc-9-cross-ports package in Ubuntu:
  New
Status in gcc-10 source package in Focal:
  Fix Committed
Status in gcc-10-cross source package in Focal:
  Fix Committed
Status in gcc-10-cross-mipsen source package in Focal:
  New
Status in gcc-10-cross-ports source package in Focal:
  Fix Committed
Status in gcc-9 source package in Focal:
  Fix Committed
Status in gcc-9-cross source package in Focal:
  Fix Committed
Status in gcc-9-cross-mipsen source package in Focal:
  New
Status in gcc-9-cross-ports source package in Focal:
  Fix Committed

Bug description:
  As done for gcc-7 and gcc-8 in 18.04 LTS in LP: #1848319, I'd like to
  update the gcc-9 and gcc-10 packages in focal to the final 10.2.0
  release.

   - gcc-10, update to the gcc-10.2.0 release
   - gcc-9, update to the gcc-9 release branch to the time
     of the gcc-10 release.
   - corresponding gcc-cross packages

  The package builds are prepared in
  https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/ppa/+packages

  [Impact]
  Provide an upstream release for GCC 10.2, and an update for GCC 9 to the 9.3 branch

  [Regression Potential]
  There is regression potential, however with a test rebuild of the main portion of the archive no regressions were found.

  [Test Case]
  No regressions in the GCC test suite, and no regressions in the test
  rebuild of the main component of the archive (all architectures)

  As a test, a complete archive rebuild was performed, and no
  regressions were found with this new package. The archive rebuild also
  contained updated versions of gcc-9, gcc-10, python3.8, and python3
  -stdlib-extensions. The GCC and Python packages should not infer with
  each other.

  [Validation]
  Analyze the build logs for regressions.
  For the cross builds, just make sure that the packages build using
  the updated sources.

  Summary of the test rebuilds:
  https://people.canonical.com/~doko/ftbfs-report/test-rebuild-20200810-focal-focal.html
  https://people.canonical.com/~doko/ftbfs-report/test-rebuild-20200810-focal-gcc-focal.html

  The first one is a reference build, the second one the test rebuild
  with the updated components.

  There are no additional regressions except for pyxdg, which is
  unrelated to the GCC update, and which was fixed by a separate SRU.
  Note that the riscv64 builds are purely informational, and are not
  checked for any regressions.

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