syscall.MAFTER plan9 constant has disappeared

[sirnewton01]

What version of Go are you using (go version)?

1.7.3

What operating system and processor architecture are you using (go env)?

plan9 386

What did you do?

I tried compiling an existing golang library that worked with earlier versions of go with the latest. It make a call to plan9 bind (syscall.Bind) and specifies that the bind should come after existing entries in that directory using the MAFTER flag.

The repository is here: https://bitbucket.org/mischief/draw9

What did you expect to see?

I expected that the code would continue to compile.

What did you see instead?

Instead, there is a compile error indicating that syscall.MAFTER is not defined in the syscall package.

[minux]

Interesting. It's removed in CL 2167 (https://golang.org/cl/2167), which is included in Go 1.5 and above.

[bradfitz]

plan9 is not a first class port and has never had the API checker enabled for it. (The API checker checks we never change or remove symbols between releases).

[bradfitz]

@0intro, I'll let you prioritize how you want to fix this, if at all.

[0intro]

Thanks for reporting. I'll add these back for inclusion into Go 1.8.

[bradfitz]

Related: #14892 tracks adding more GOOS/GOARCH pairs to the API checker.

[gopherbot]

CL https://golang.org/cl/33271 mentions this issue.