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cmd/vet, cgo: spurious report on C.CBytes call #17563

alandonovan opened this issue Oct 24, 2016 · 1 comment


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commented Oct 24, 2016

$ nl -ba a.go
     1  package main
     3  import "C"
     5  func _(b []byte) {
     6          _ = C.CBytes(b)
     7  }
$ vet a.go
a.go:6: possibly passing Go type with embedded pointer to C

Vet reports an error each time the C.CBytes function is called, because its argument is a byte slice, which contains a pointer. However, this function is being used exactly as intended and Vet should make an special exception for it.


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commented Oct 24, 2016

CL mentions this issue.

@quentinmit quentinmit added the NeedsFix label Oct 24, 2016

@quentinmit quentinmit added this to the Go1.8 milestone Oct 24, 2016

@quentinmit quentinmit changed the title vet: cgo: spurious report on C.CBytes call cmd/vet, cgo: spurious report on C.CBytes call Oct 24, 2016

gopherbot pushed a commit that referenced this issue Oct 24, 2016

cmd/vet: cgo: emit no error for calls to C.CBytes
Fixes issue #17563

Change-Id: Ibb41ea9419907193526cc601f6afd07d8689b1fe
Reviewed-by: Ian Lance Taylor <>
Run-TryBot: Ian Lance Taylor <>
TryBot-Result: Gobot Gobot <>

@rsc rsc closed this Oct 25, 2016

@golang golang locked and limited conversation to collaborators Oct 25, 2017

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