[Bug 1866835] [NEW] update gcc-8 packages for bionic

[Matthias Klose]

Public bug reported:

This is a follow-up to LP: #1848319. I'd like to update the gcc-8
packages in bionic to the final 8.4.0 release.

 - gcc-8, update to the gcc-8.4.0 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 8.4, the non-default GCC in 18.04 LTS.

[Regression Potential]
There is regression potential, however the compiler is not used by default. Affected packages are libgcc1 and libstdc++6.

[Test Case]
No regressions in the GCC test suite.  We don't do a test rebuild, as that would use GCC 7 only.
Cross compiler packages should just build.

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

** Affects: gcc-8 (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: gcc-8-cross (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: gcc-8-cross-ports (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: gcc-8 (Ubuntu Bionic)
     Importance: Undecided
         Status: New

** Affects: gcc-8-cross (Ubuntu Bionic)
     Importance: Undecided
         Status: New

** Affects: gcc-8-cross-ports (Ubuntu Bionic)
     Importance: Undecided
         Status: New

** Affects: gcc-8 (Ubuntu Eoan)
     Importance: Undecided
         Status: New

** Affects: gcc-8-cross (Ubuntu Eoan)
     Importance: Undecided
         Status: New

** Affects: gcc-8-cross-ports (Ubuntu Eoan)
     Importance: Undecided
         Status: New

** Also affects: gcc-8-cross (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: gcc-8-cross-ports (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: gcc-8 (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: gcc-8-cross (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: gcc-8-cross-ports (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: gcc-8 (Ubuntu Eoan)
   Importance: Undecided
       Status: New

** Also affects: gcc-8-cross (Ubuntu Eoan)
   Importance: Undecided
       Status: New

** Also affects: gcc-8-cross-ports (Ubuntu Eoan)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1866835

Title:
  update gcc-8 packages for bionic

Status in gcc-8 package in Ubuntu:
  New
Status in gcc-8-cross package in Ubuntu:
  New
Status in gcc-8-cross-ports package in Ubuntu:
  New
Status in gcc-8 source package in Bionic:
  New
Status in gcc-8-cross source package in Bionic:
  New
Status in gcc-8-cross-ports source package in Bionic:
  New
Status in gcc-8 source package in Eoan:
  New
Status in gcc-8-cross source package in Eoan:
  New
Status in gcc-8-cross-ports source package in Eoan:
  New

Bug description:
  This is a follow-up to LP: #1848319. I'd like to update the gcc-8
  packages in bionic to the final 8.4.0 release.

   - gcc-8, update to the gcc-8.4.0 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 8.4, the non-default GCC in 18.04 LTS.

  [Regression Potential]
  There is regression potential, however the compiler is not used by default. Affected packages are libgcc1 and libstdc++6.

  [Test Case]
  No regressions in the GCC test suite.  We don't do a test rebuild, as that would use GCC 7 only.
  Cross compiler packages should just build.

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

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