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cmd/gc: internal compiler error: fault #8017

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dvyukov opened this issue May 17, 2014 · 6 comments
Closed

cmd/gc: internal compiler error: fault #8017

dvyukov opened this issue May 17, 2014 · 6 comments
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Go1.4

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@dvyukov
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dvyukov commented May 17, 2014 

go version devel +386c6757d94c Sat May 17 00:06:56 2014 +0000 darwin/amd64

Program:
http://play.golang.org/p/z-JN1vha-D

$ go build bug.go
bug.go:77: internal compiler error: fault
@dvyukov
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dvyukov commented May 17, 2014

Comment 1:

Probably it's a dup, but needs to be verified after the fix:
http://play.golang.org/p/VkY0x7U1mG

@dvyukov
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dvyukov commented May 18, 2014

Comment 2:

Another one:
http://play.golang.org/p/Vj4vzNR-_q
Since they all are "internal compiler error: fault", difficult to say whether they are
dups or not, until we start fixing them one by one.

@ianlancetaylor
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Comment 3:

Labels changed: added repo-main, release-go1.4.

@griesemer
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Comment 4:

Simplified version: http://play.golang.org/p/pmkScYv0JO
package main
func main() {
    var ch chan int
    select {
    case <-ch:
    case <-make(chan int, len([2][]int{([][]int{})[len(ch)], []int{}})):
    }
}

Status changed to Accepted.

@gopherbot
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Comment 5:

CL https://golang.org/cl/112080043 mentions this issue.

@remyoudompheng
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Comment 6:

This issue was closed by revision e024ed5.

Status changed to Fixed.

@rsc rsc added this to the Go1.4 milestone Apr 14, 2015
@rsc rsc removed the release-go1.4 label Apr 14, 2015
@golang golang locked and limited conversation to collaborators Jun 25, 2016
wheatman pushed a commit to wheatman/go-akaros that referenced this issue Jun 25, 2018
@remyoudompheng @wheatman
cmd/gc: don't walk static nodes generated by anylit.
000d3fc 
During anylit run, nodes such as SLICEARR(statictmp, [:])
may be generated and are expected to be found unchanged by
gen_as_init.

In some walks (in particular walkselect), the statement
may be walked again and lowered to its usual form, leading to a
crash.

Fixes golang#8017.
Fixes golang#8024.
Fixes golang#8058.

LGTM=rsc
R=golang-codereviews, dvyukov, gobot, rsc
CC=golang-codereviews
https://golang.org/cl/112080043
wheatman pushed a commit to wheatman/go-akaros that referenced this issue Jul 9, 2018
@remyoudompheng @wheatman
cmd/gc: don't walk static nodes generated by anylit.
689de1b 
During anylit run, nodes such as SLICEARR(statictmp, [:])
may be generated and are expected to be found unchanged by
gen_as_init.

In some walks (in particular walkselect), the statement
may be walked again and lowered to its usual form, leading to a
crash.

Fixes golang#8017.
Fixes golang#8024.
Fixes golang#8058.

LGTM=rsc
R=golang-codereviews, dvyukov, gobot, rsc
CC=golang-codereviews
https://golang.org/cl/112080043
wheatman pushed a commit to wheatman/go-akaros that referenced this issue Jul 30, 2018
@remyoudompheng @wheatman
cmd/gc: don't walk static nodes generated by anylit.
a85c0f3 
During anylit run, nodes such as SLICEARR(statictmp, [:])
may be generated and are expected to be found unchanged by
gen_as_init.

In some walks (in particular walkselect), the statement
may be walked again and lowered to its usual form, leading to a
crash.

Fixes golang#8017.
Fixes golang#8024.
Fixes golang#8058.

LGTM=rsc
R=golang-codereviews, dvyukov, gobot, rsc
CC=golang-codereviews
https://golang.org/cl/112080043
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@rsc @remyoudompheng @dvyukov @ianlancetaylor @griesemer @gopherbot