[Bug 1460530] Re: ubuntu-snappy fails to build on *ARM*64 (fails during the tests)

[Michael Vogt]

** Patch removed: "Possible fix for gccgo-5"
   https://bugs.launchpad.net/snappy/+bug/1460530/+attachment/4407925/+files/gccgo-5_5.1%7Erc1-0ubuntu2.debdiff

** Patch removed: "updated debdiff against gcc5 instead of gccgo-5 and with proper dep3 header"
   https://bugs.launchpad.net/snappy/+bug/1460530/+attachment/4408053/+files/gcc-5_5.1.1-8ubuntu1%2Bppa1.debdiff

** Patch removed: "updated debdiff against gcc5 instead of gccgo-5 and with proper dep3 header"
   https://bugs.launchpad.net/snappy/+bug/1460530/+attachment/4408056/+files/gcc-5_5.1.1-8ubuntu1%2Bppa1.debdiff

** Patch added: "The diff for gccgo (for easier review)"
   https://bugs.launchpad.net/ubuntu/+source/gcc-5/+bug/1460530/+attachment/4408567/+files/gccgo-sendfile-fix.diff

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https://bugs.launchpad.net/bugs/1460530

Title:
  ubuntu-snappy fails to build on *ARM*64 (fails during the tests)

Status in Snappy Ubuntu:
  In Progress
Status in gcc-5 package in Ubuntu:
  In Progress

Bug description:
  Snappy fails to build on arm64 right now . This makes arm64 image
  builds fail because there is no ubuntu-snappy-cli to install.

  It fails because of: "*** Test killed with Quit: ran too long
  (10m0s)."

  Here is the build failure:
  """"
  === RUN Test
  Quit

  syscall.sendfile
  	/build/buildd/gcc-5-5.1.1/build/aarch64-linux-gnu/libgo/libcalls.go:3062
  syscall.Sendfile
  	../../../src/libgo/go/syscall/libcall_linux.go:334
  helpers.doCopyFile
  	/build/buildd/ubuntu-snappy-1.0.1/obj-aarch64-linux-gnu/src/launchpad.net/snappy/helpers/cp_linux.go:42
  launchpad_net_snappy_helpers.CopyFile
  	/build/buildd/ubuntu-snappy-1.0.1/obj-aarch64-linux-gnu/src/launchpad.net/snappy/helpers/cp.go:83
  launchpad_net_snappy_helpers.TestCpMulti.pN36_launchpad_net_snappy_helpers.cpSuite
  	/build/buildd/ubuntu-snappy-1.0.1/obj-aarch64-linux-gnu/src/launchpad.net/snappy/helpers/cp_linux_test.go:33
  reflect.call
  	../../../src/libgo/runtime/go-reflect-call.c:219
  reflect.call.N13_reflect.Value
  	../../../src/libgo/go/reflect/value.go:443
  reflect.Call.N13_reflect.Value
  	../../../src/libgo/go/reflect/value.go:293
  launchpad_net_gocheck.Call.N32_launchpad_net_gocheck.methodType
  	/build/buildd/ubuntu-snappy-1.0.1/obj-aarch64-linux-gnu/src/launchpad.net/gocheck/gocheck.go:43
  gocheck.$nested5
  	/build/buildd/ubuntu-snappy-1.0.1/obj-aarch64-linux-gnu/src/launchpad.net/gocheck/gocheck.go:733
  gocheck.$nested3
  	/build/buildd/ubuntu-snappy-1.0.1/obj-aarch64-linux-gnu/src/launchpad.net/gocheck/gocheck.go:628

  goroutine 16 [chan receive, 9 minutes]:
  testing.RunTests
  	../../../src/libgo/go/testing/testing.go:556
  testing.Run.pN9_testing.M
  	../../../src/libgo/go/testing/testing.go:485
  main.main
  	/tmp/go-build359736861/launchpad.net/snappy/helpers/_test/_testmain.go:52
  created by main
  	../../../src/libgo/runtime/go-main.c:48

  goroutine 18 [finalizer wait, 9 minutes]:
  created by runtime_createfing
  	../../../src/libgo/runtime/mgc0.c:2572

  goroutine 20 [chan receive, 9 minutes]:
  launchpad_net_gocheck.runTest.pN33_launchpad_net_gocheck.suiteRunner
  	/build/buildd/ubuntu-snappy-1.0.1/obj-aarch64-linux-gnu/src/launchpad.net/gocheck/gocheck.go:771
  launchpad_net_gocheck.run.pN33_launchpad_net_gocheck.suiteRunner
  	/build/buildd/ubuntu-snappy-1.0.1/obj-aarch64-linux-gnu/src/launchpad.net/gocheck/gocheck.go:584
  launchpad_net_gocheck.Run
  	/build/buildd/ubuntu-snappy-1.0.1/obj-aarch64-linux-gnu/src/launchpad.net/gocheck/run.go:76
  launchpad_net_gocheck.RunAll
  	/build/buildd/ubuntu-snappy-1.0.1/obj-aarch64-linux-gnu/src/launchpad.net/gocheck/run.go:68
  launchpad_net_gocheck.TestingT
  	/build/buildd/ubuntu-snappy-1.0.1/obj-aarch64-linux-gnu/src/launchpad.net/gocheck/run.go:56
  launchpad_net_snappy_helpers.Test
  	/build/buildd/ubuntu-snappy-1.0.1/obj-aarch64-linux-gnu/src/launchpad.net/snappy/helpers/helpers_test.go:34
  testing.tRunner
  	../../../src/libgo/go/testing/testing.go:447
  created by testing.RunTests
  	../../../src/libgo/go/testing/testing.go:555

  goroutine 21 [select, 9 minutes]:
  launchpad_net_gocheck._loopRoutine.pN35_launchpad_net_gocheck.resultTracker
  	/build/buildd/ubuntu-snappy-1.0.1/obj-aarch64-linux-gnu/src/launchpad.net/gocheck/gocheck.go:436
  created by launchpad_net_gocheck.start.pN35_launchpad_net_gocheck.resultTracker
  	/build/buildd/ubuntu-snappy-1.0.1/obj-aarch64-linux-gnu/src/launchpad.net/gocheck/gocheck.go:416
  *** Test killed with Quit: ran too long (10m0s).
  """

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