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cmd/cgo: access errno from void C function #3729

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rsc opened this issue Jun 12, 2012 · 6 comments
Closed

cmd/cgo: access errno from void C function #3729

rsc opened this issue Jun 12, 2012 · 6 comments
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FrozenDueToAge Suggested Issues that may be good for new contributors looking for work to do.
Milestone
Go1.1

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@rsc
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rsc commented Jun 12, 2012 

If a C function returns void then you cannot do

x, errno := C.f()

because there is no x.
Reported by dan.kortschak
@rsc
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rsc commented Sep 12, 2012

Comment 1:

Labels changed: added go1.1.

@rsc
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rsc commented Dec 10, 2012

Comment 2:

Labels changed: added size-m.

@rsc
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rsc commented Dec 10, 2012

Comment 3:

Labels changed: added suggested.

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rsc commented Dec 10, 2012

Comment 4:

I think we can make C void functions return struct{} instead of returning nothing.
Then _, errno := C.f() works.

@minux
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minux commented Dec 13, 2012

Comment 5:

https://golang.org/cl/6938052

Owner changed to @minux.

Status changed to Started.

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minux commented Dec 17, 2012

Comment 6:

This issue was closed by revision 1b18a60.

Status changed to Fixed.

@rsc rsc added fixed Suggested Issues that may be good for new contributors looking for work to do. labels Dec 17, 2012
@rsc rsc added this to the Go1.1 milestone Apr 14, 2015
@rsc rsc removed the go1.1 label Apr 14, 2015
@golang golang locked and limited conversation to collaborators Jun 24, 2016
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