[dev.typealias] go/build: add go1.9 build tag

It's earlier than usual but this will help us put the type alias-aware
code into x/tools without breaking clients on go1.6, go1.7,
or (eventually) go1.8.

Change-Id: I43e7ea804922de07d153c7e356cf95e2a11fc592
Reviewed-on: https://go-review.googlesource.com/35050
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

diff --git a/src/go/build/build.go b/src/go/build/build.go
index da12d50bb15baae5d8e980b6ee2b1cea38413b74..31456ea34389b9fbe35da0d6780d1468f23237b4 100644 (file)
--- a/src/go/build/build.go
+++ b/src/go/build/build.go
@@ -290,7 +290,8 @@ func defaultContext() Context {
        // in all releases >= Go 1.x. Code that requires Go 1.x or later should
        // say "+build go1.x", and code that should only be built before Go 1.x
        // (perhaps it is the stub to use in that case) should say "+build !go1.x".
-       c.ReleaseTags = []string{"go1.1", "go1.2", "go1.3", "go1.4", "go1.5", "go1.6", "go1.7", "go1.8"}
+       // NOTE: If you add to this list, also update the doc comment in doc.go.
+       c.ReleaseTags = []string{"go1.1", "go1.2", "go1.3", "go1.4", "go1.5", "go1.6", "go1.7", "go1.8", "go1.9"}
 
        env := os.Getenv("CGO_ENABLED")
        if env == "" {

diff --git a/src/go/build/doc.go b/src/go/build/doc.go
index 979d0477dfbfd4df9a26a6cf1573ca98791a0c8d..422e1a5ffd20023df05923e1b03ec2d1add2ae5c 100644 (file)
--- a/src/go/build/doc.go
+++ b/src/go/build/doc.go
@@ -105,6 +105,7 @@
 //     - "go1.6", from Go version 1.6 onward
 //     - "go1.7", from Go version 1.7 onward
 //     - "go1.8", from Go version 1.8 onward
+//     - "go1.9", from Go version 1.9 onward
 //     - any additional words listed in ctxt.BuildTags
 //
 // If a file's name, after stripping the extension and a possible _test suffix,