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cmd/compile: internal compiler error: append not lowered when building kubernetes on ppc64le tip #15988

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laboger opened this issue Jun 7, 2016 · 3 comments
Closed

cmd/compile: internal compiler error: append not lowered when building kubernetes on ppc64le tip #15988

laboger opened this issue Jun 7, 2016 · 3 comments
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Go1.7

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@laboger
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laboger commented Jun 7, 2016 •
edited by josharian

Please answer these questions before submitting your issue. Thanks!

  1. What version of Go are you using (go version)?
    go version devel +2f08888 Tue Jun 7 06:04:23 2016 +0000 linux/ppc64le
    Does not happen on go1.6
  2. What operating system and processor architecture are you using (go env)?
    ppc64le Ubuntu 16.04
  3. What did you do?
    If possible, provide a recipe for reproducing the error.
    A complete runnable program is good.
    A link on play.golang.org is best.
    Built golang on ppc64le from latest master, used it to build latest from kubernetes with a few minor modifications to golang.sh.

git clone https://github.com/kubernetes/kubernetes.git
cd kubernetes
Apply this patch
kub.txt

make

  1. What did you expect to see?
    There are linker errors that occur on ppc64le which I am trying to debug, but this error is hit first.
  2. What did you see instead?
/home/boger/golang/upstream/go/pkg/tool/linux_ppc64le/compile -o $WORK/k8s.io/kubernetes/test/integration/framework.a -trimpath $WORK -p k8s.io/kubernetes/test/integration/framework -complete -buildid 55d44bb75e77b40e73e639b0ab0f1a4588e7ff96 -importmap github.com/coreos/etcd/client=k8s.io/kubernetes/vendor/github.com/coreos/etcd/client -importmap github.com/golang/glog=k8s.io/kubernetes/vendor/github.com/golang/glog -importmap golang.org/x/net/context=k8s.io/kubernetes/vendor/golang.org/x/net/context -D _/home/boger/kubnew/kubernetes/_output/local/go/src/k8s.io/kubernetes/test/integration/framework -I $WORK -I /home/boger/kubnew/kubernetes/_output/local/go/pkg/linux_ppc64le -pack ./etcd_utils.go ./master_utils.go ./serializer.go                  
//# k8s.io/kubernetes/test/e2e/framework                                                                      
cgen_append-n [0xc42bbab050]                                                                                
.   APPEND l(6491) tc(1) SLICE-[]*extensions.ReplicaSet                                                     
.   APPEND-list                                                                                             
.   .   IND u(2) l(6491) tc(1) SLICE-[]*extensions.ReplicaSet                                               
.   .   .   NAME-framework.&oldRSs u(1) a(true) l(6472) x(0+0) class(PAUTO) tc(1) assigned used(true) PTR64-*[]*extensions.ReplicaSet                                                                                   

.   .   NAME-framework.autotmp_7249 u(1) a(true) l(6491) x(0+0) class(PAUTO) esc(N) tc(1) assigned used(true) PTR64-*extensions.ReplicaSet                                                                              
cgen_append-res [0xc43173be60]                                                                              
.   IND u(2) l(6491) tc(1) SLICE-[]*extensions.ReplicaSet                                                   
.   .   NAME-framework.&allRSs u(1) a(true) l(6472) x(0+0) class(PAUTO) tc(1) assigned used(true) PTR64-*[]*extensions.ReplicaSet                                                                                       
test/e2e/framework/util.go:2858: internal compiler error: append not lowered                                
goroutine 1 [running]:
runtime/debug.Stack(0x0, 0x0, 0x0)
        /home/boger/golang/upstream/go/src/runtime/debug/stack.go:24 +0x7c
cmd/compile/internal/gc.Fatalf(0x65c616, 0x12, 0x0, 0x0, 0x0)             
        /home/boger/golang/upstream/go/src/cmd/compile/internal/gc/subr.go:165 +0x270
cmd/compile/internal/gc.cgen_append(0xc42bbab050, 0xc43173be60)                      
        /home/boger/golang/upstream/go/src/cmd/compile/internal/gc/cgen.go:2861 +0x17c
cmd/compile/internal/gc.cgen_wb(0xc42bbab050, 0xc43173be60, 0x0)                      
        /home/boger/golang/upstream/go/src/cmd/compile/internal/gc/cgen.go:65 +0x1e0  
cmd/compile/internal/gc.Cgen_as_wb(0xc43173be60, 0xc42bbab050, 0x1900)                
        /home/boger/golang/upstream/go/src/cmd/compile/internal/gc/gen.go:1015 +0x1a0 
cmd/compile/internal/gc.Cgen_as(0xc43173be60, 0xc42bbab050)                           
        /home/boger/golang/upstream/go/src/cmd/compile/internal/gc/gen.go:971 +0x3c   
cmd/compile/internal/gc.gen(0xc42bbab0e0)                                             
        /home/boger/golang/upstream/go/src/cmd/compile/internal/gc/gen.go:918 +0x220  
cmd/compile/internal/gc.Genlist(0xc43171ad00)                                         
        /home/boger/golang/upstream/go/src/cmd/compile/internal/gc/gen.go:303 +0x8c   
cmd/compile/internal/gc.genlegacy(0xc420150278, 0xc43173c7e0, 0xc43173c850)           
        /home/boger/golang/upstream/go/src/cmd/compile/internal/gc/pgen.go:498 +0x84  
cmd/compile/internal/gc.compile(0xc42b3ce900)                                         
        /home/boger/golang/upstream/go/src/cmd/compile/internal/gc/pgen.go:485 +0x1268
cmd/compile/internal/gc.funccompile(0xc42b3ce900)                                     
        /home/boger/golang/upstream/go/src/cmd/compile/internal/gc/dcl.go:1287 +0x1a8 
cmd/compile/internal/gc.Main()                                                        
        /home/boger/golang/upstream/go/src/cmd/compile/internal/gc/main.go:467 +0x2370
cmd/compile/internal/ppc64.Main()                                                     
        /home/boger/golang/upstream/go/src/cmd/compile/internal/ppc64/galign.go:72 +0x348
main.main()                                                                              
        /home/boger/golang/upstream/go/src/cmd/compile/main.go:41 +0x4e8

This error does not occur on x86.
@ianlancetaylor ianlancetaylor added this to the Go1.7 milestone Jun 7, 2016
@ianlancetaylor
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CC @randall77 @josharian

@randall77
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Repro:

package main

func f(p, q []int) {
    p = append(q, 5)
    sink = &p
}
var sink *[]int

Fails when compiling with -ssa=0 (on any architecture).

@randall77 randall77 self-assigned this Jun 7, 2016
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CL https://golang.org/cl/23863 mentions this issue.

@golang golang locked and limited conversation to collaborators Jun 8, 2017
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