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cmd/compile: spurious error for goto jumping over non-var declarations #13521

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momchil-velikov opened this issue Dec 7, 2015 · 5 comments
Closed

cmd/compile: spurious error for goto jumping over non-var declarations #13521

momchil-velikov opened this issue Dec 7, 2015 · 5 comments
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FrozenDueToAge NeedsFix The path to resolution is known, but the work has not been done.
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Go1.9

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@momchil-velikov
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The compiler issues an error message for a goto jumping over type or const declaration, like

package main

func main() {
    goto L1
    type A int
L1:
}

The specification forbids only jumping over variable declarations.
@bradfitz
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bradfitz commented Dec 7, 2015

/cc @griesemer @alandonovan @ianlancetaylor

@ianlancetaylor
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Fails on gccgo as well:

/home/iant/foo.go:4:5: error: goto jumps over declaration of ‘A’
     goto L1
     ^
/home/iant/foo.go:5:10: note: ‘A’ defined here
     type A int
          ^

@ianlancetaylor ianlancetaylor added this to the Go1.7 milestone Dec 7, 2015
@bradfitz
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bradfitz commented Dec 7, 2015

Passes with gotypes.

@rsc rsc changed the title cmd/compile: The compiler issues an error message for a goto jumping over type or const declaration cmd/compile: spurious error for goto jumping over non-var declarations May 17, 2016
@rsc rsc modified the milestones: Go1.8, Go1.7 May 17, 2016
@quentinmit quentinmit added the NeedsFix The path to resolution is known, but the work has not been done. label Oct 11, 2016
@rsc rsc modified the milestones: Go1.9, Go1.8 Oct 21, 2016
@ALTree
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ALTree commented Jan 9, 2017

Exact dup of #8042.

Also see the old thread for a tentative fix (it was reverted but maybe it's salvageable).

@ALTree ALTree mentioned this issue Feb 15, 2017
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@mdempsky
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Closing as duplicate of #8042.

@golang golang locked and limited conversation to collaborators Feb 15, 2018
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FrozenDueToAge NeedsFix The path to resolution is known, but the work has not been done.
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Go1.9
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@bradfitz @mdempsky @rsc @quentinmit @ianlancetaylor @ALTree @momchil-velikov @gopherbot