[Bug 1365480] Re: new compiler breaks ppc64el unit tests in many ways

[Dave Cheney]

** Changed in: juju-core
       Status: Triaged => Fix Committed

** Changed in: gcc-4.9 (Ubuntu)
       Status: In Progress => Invalid

** Changed in: juju-core
     Assignee: (unassigned) => Dave Cheney (dave-cheney)

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https://bugs.launchpad.net/bugs/1365480

Title:
  new compiler breaks ppc64el unit tests in many ways

Status in juju-core:
  Fix Committed
Status in “gcc-4.9” package in Ubuntu:
  Invalid

Bug description:
  The tests for http://juju-ci.vapour.ws:8080/job/run-unit-tests-trusty-
  ppc64el/ last passed for commit 5ecf58fb. The tests fail starting from
  commit 3d20d690

  The common failures are
  FAIL: local_test.go:227: TestBootstrapFailsWhenPublicIPError.pN61_github_com_juju_juju_provider_openstack_test.localServerSuite
  TestCollectInstances.pN61_github_com_juju_juju_provider_openstack_test.localServerSuite
  TestInstancesBuildSpawning.pN61_github_com_juju_juju_provider_openstack_test.localServerSuite
  TestStopInstanceSecurityGroupNotDeleted.pN61_github_com_juju_juju_provider_openstack_test.localServerSuite

  After additional commits were added, we see additional failures
  TearDownTest.pN49_github_com_juju_juju_apiserver_test.debugLogSuite
  TestAddRemoveSet.pN42_github_com_juju_juju_replicaset.MongoSuite

  The failing code has not changed.

  We can see that the gcc-4.9 compiler was updated between runs. When the last passing tarball is run with the current compiler, it fails the same way. The bad compiler is
  go version xgcc (Ubuntu 4.9.1-12ubuntu2) 4.9.1 linux/ppc64

  That last know good compiler was
  go version xgcc (Ubuntu 4.9.1-10ubuntu3) 4.9.1 linux/ppc64

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