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

[Curtis Hovey]

** Summary changed:

- ppc64el unit tests fail in many ways
+ new compiler breaks ppc64el unit tests in many ways

** Also affects: gcc-4.9 (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: gcc-4.9 (Ubuntu)
       Status: New => Confirmed

** Changed in: juju-core
   Importance: Critical => High

** Description changed:

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

Title:
  new compiler breaks ppc64el unit tests in many ways

Status in juju-core:
  Triaged
Status in “gcc-4.9” package in Ubuntu:
  Confirmed

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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