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

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: gcc-10 (Ubuntu)
       Status: New => Confirmed

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

Status in gcc-10 package in Ubuntu:
  Confirmed
Status in gcc-9 package in Ubuntu:
  Confirmed
Status in gcc-10 source package in Focal:
  Confirmed
Status in gcc-9 source package in Focal:
  Confirmed

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 10.1.0
  release.

   - gcc-10, update to the gcc-10.1.0 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/~doko/+archive/ubuntu/toolchain/+packages

  [Impact]
  Provide an upstream release for GCC 10.1, and an update for GCC 9 to the 9.3
  branch

  FIXME: update after the test rebuild is done.

  [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-20191107-bionic-bionic.html
  https://people.canonical.com/~doko/ftbfs-report/test-rebuild-20191107-bionic-gcc7-bionic.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 one Python test, which sometimes hangs on the buildds, sometimes passes (test_ttk_guionly). Will
  be disabled in a follow-up upload.

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