doc/devel/release.html - go - Git at Google

 <!--{
 	"Title": "Release History"
 }-->

 <p>This page summarizes the changes between official stable releases of Go.
 The <a href="//golang.org/change">change log</a> has the full details.</p>

 <p>To update to a specific release, use:</p>

 <pre>
 git pull
 git checkout <i>release-branch</i>
 </pre>

 <h2 id="policy">Release Policy</h2>

 <p>
 Each major Go release obsoletes and ends support for the previous one.
 For example, if Go 1.5 has been released, then it is the current release
 and Go 1.4 and earlier are no longer supported.
 We fix critical problems in the current release as needed by issuing minor revisions
 (for example, Go 1.5.1, Go 1.5.2, and so on).
 </p>

 <p>
 As a special case, we issue minor revisions for critical security problems
 in both the current release and the previous release.
 For example, if Go 1.5 is the current release then we will issue minor revisions
 to fix critical security problems in both Go 1.4 and Go 1.5 as they arise.
 See the <a href="/security">security policy</a> for more details.
 </p>

 <h2 id="go1.8">go1.8 (released 2017/02/16)</h2>

 <p>
 Go 1.8 is a major release of Go.
 Read the <a href="/doc/go1.8">Go 1.8 Release Notes</a> for more information.
 </p>

 <h2 id="go1.7">go1.7 (released 2016/08/15)</h2>

 <p>
 Go 1.7 is a major release of Go.
 Read the <a href="/doc/go1.7">Go 1.7 Release Notes</a> for more information.
 </p>

 <h3 id="go1.7.minor">Minor revisions</h3>

 <p>
 go1.7.1 (released 2016/09/07) includes fixes to the compiler, runtime,
 documentation, and the <code>compress/flate</code>, <code>hash/crc32</code>,
 <code>io</code>, <code>net</code>, <code>net/http</code>,
 <code>path/filepath</code>, <code>reflect</code>, and <code>syscall</code>
 packages.
 See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.7.1">Go
 1.7.1 milestone</a> on our issue tracker for details.
 </p>

 <p>
 go1.7.2 should not be used. It was tagged but not fully released.
 The release was deferred due to a last minute bug report.
 Use go1.7.3 instead, and refer to the summary of changes below.
 </p>

 <p>
 go1.7.3 (released 2016/10/19) includes fixes to the compiler, runtime,
 and the <code>crypto/cipher</code>, <code>crypto/tls</code>,
 <code>net/http</code>, and <code>strings</code> packages.
 See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.7.3">Go
 1.7.3 milestone</a> on our issue tracker for details.
 </p>

 <p>
 go1.7.4 (released 2016/12/01) includes two security fixes.
 See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.7.4">Go
 1.7.4 milestone</a> on our issue tracker for details.
 </p>

 <p>
 go1.7.5 (released 2017/01/26) includes fixes to the compiler, runtime,
 and the <code>crypto/x509</code> and <code>time</code> packages.
 See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.7.5">Go
 1.7.5 milestone</a> on our issue tracker for details.
 </p>

 <h2 id="go1.6">go1.6 (released 2016/02/17)</h2>

 <p>
 Go 1.6 is a major release of Go.
 Read the <a href="/doc/go1.6">Go 1.6 Release Notes</a> for more information.
 </p>

 <h3 id="go1.6.minor">Minor revisions</h3>

 <p>
 go1.6.1 (released 2016/04/12) includes two security fixes.
 See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.6.1">Go
 1.6.1 milestone</a> on our issue tracker for details.
 </p>

 <p>
 go1.6.2 (released 2016/04/20) includes fixes to the compiler, runtime, tools,
 documentation, and the <code>mime/multipart</code>, <code>net/http</code>, and
 <code>sort</code> packages.
 See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.6.2">Go
 1.6.2 milestone</a> on our issue tracker for details.
 </p>

 <p>
 go1.6.3 (released 2016/07/17) includes security fixes to the
 <code>net/http/cgi</code> package and <code>net/http</code> package when used in
 a CGI environment.
 See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.6.3">Go
 1.6.3 milestone</a> on our issue tracker for details.
 </p>

 <p>
 go1.6.4 (released 2016/12/01) includes two security fixes.
 It contains the same fixes as Go 1.7.4 and was released at the same time.
 See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.7.4">Go
 1.7.4 milestone</a> on our issue tracker for details.
 </p>

 <h2 id="go1.5">go1.5 (released 2015/08/19)</h2>

 <p>
 Go 1.5 is a major release of Go.
 Read the <a href="/doc/go1.5">Go 1.5 Release Notes</a> for more information.
 </p>

 <h3 id="go1.5.minor">Minor revisions</h3>

 <p>
 go1.5.1 (released 2015/09/08) includes bug fixes to the compiler, assembler, and
 the <code>fmt</code>, <code>net/textproto</code>, <code>net/http</code>, and
 <code>runtime</code> packages.
 See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.5.1">Go
 1.5.1 milestone</a> on our issue tracker for details.
 </p>

 <p>
 go1.5.2 (released 2015/12/02) includes bug fixes to the compiler, linker, and
 the <code>mime/multipart</code>, <code>net</code>, and <code>runtime</code>
 packages.
 See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.5.2">Go
 1.5.2 milestone</a> on our issue tracker for details.
 </p>

 <p>
 go1.5.3 (released 2016/01/13) includes a security fix to the <code>math/big</code> package
 affecting the <code>crypto/tls</code> package.
 See the <a href="https://golang.org/s/go153announce">release announcement</a> for details.
 </p>

 <p>
 go1.5.4 (released 2016/04/12) includes two security fixes.
 It contains the same fixes as Go 1.6.1 and was released at the same time.
 See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.6.1">Go
 1.6.1 milestone</a> on our issue tracker for details.
 </p>

 <h2 id="go1.4">go1.4 (released 2014/12/10)</h2>

 <p>
 Go 1.4 is a major release of Go.
 Read the <a href="/doc/go1.4">Go 1.4 Release Notes</a> for more information.
 </p>

 <h3 id="go1.4.minor">Minor revisions</h3>

 <p>
 go1.4.1 (released 2015/01/15) includes bug fixes to the linker and the <code>log</code>, <code>syscall</code>, and <code>runtime</code> packages.
 See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.4.1">Go 1.4.1 milestone on our issue tracker</a> for details.
 </p>

 <p>
 go1.4.2 (released 2015/02/17) includes bug fixes to the <code>go</code> command, the compiler and linker, and the <code>runtime</code>, <code>syscall</code>, <code>reflect</code>, and <code>math/big</code> packages.
 See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.4.2">Go 1.4.2 milestone on our issue tracker</a> for details.
 </p>

 <p>
 go1.4.3 (released 2015/09/22) includes security fixes to the <code>net/http</code> package and bug fixes to the <code>runtime</code> package.
 See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.4.3">Go 1.4.3 milestone on our issue tracker</a> for details.
 </p>

 <h2 id="go1.3">go1.3 (released 2014/06/18)</h2>

 <p>
 Go 1.3 is a major release of Go.
 Read the <a href="/doc/go1.3">Go 1.3 Release Notes</a> for more information.
 </p>

 <h3 id="go1.3.minor">Minor revisions</h3>

 <p>
 go1.3.1 (released 2014/08/13) includes bug fixes to the compiler and the <code>runtime</code>, <code>net</code>, and <code>crypto/rsa</code> packages.
 See the <a href="https://github.com/golang/go/commits/go1.3.1">change history</a> for details.
 </p>

 <p>
 go1.3.2 (released 2014/09/25) includes bug fixes to cgo and the crypto/tls packages.
 See the <a href="https://github.com/golang/go/commits/go1.3.2">change history</a> for details.
 </p>

 <p>
 go1.3.3 (released 2014/09/30) includes further bug fixes to cgo, the runtime package, and the nacl port.
 See the <a href="https://github.com/golang/go/commits/go1.3.3">change history</a> for details.
 </p>

 <h2 id="go1.2">go1.2 (released 2013/12/01)</h2>

 <p>
 Go 1.2 is a major release of Go.
 Read the <a href="/doc/go1.2">Go 1.2 Release Notes</a> for more information.
 </p>

 <h3 id="go1.2.minor">Minor revisions</h3>

 <p>
 go1.2.1 (released 2014/03/02) includes bug fixes to the <code>runtime</code>, <code>net</code>, and <code>database/sql</code> packages.
 See the <a href="https://github.com/golang/go/commits/go1.2.1">change history</a> for details.
 </p>

 <p>
 go1.2.2 (released 2014/05/05) includes a
 <a href="https://github.com/golang/go/commits/go1.2.2">security fix</a>
 that affects the tour binary included in the binary distributions (thanks to Guillaume T).
 </p>

 <h2 id="go1.1">go1.1 (released 2013/05/13)</h2>

 <p>
 Go 1.1 is a major release of Go.
 Read the <a href="/doc/go1.1">Go 1.1 Release Notes</a> for more information.
 </p>

 <h3 id="go1.1.minor">Minor revisions</h3>

 <p>
 go1.1.1 (released 2013/06/13) includes several compiler and runtime bug fixes.
 See the <a href="https://github.com/golang/go/commits/go1.1.1">change history</a> for details.
 </p>

 <p>
 go1.1.2 (released 2013/08/13) includes fixes to the <code>gc</code> compiler
 and <code>cgo</code>, and the <code>bufio</code>, <code>runtime</code>,
 <code>syscall</code>, and <code>time</code> packages.
 See the <a href="https://github.com/golang/go/commits/go1.1.2">change history</a> for details.
 If you use package syscall's <code>Getrlimit</code> and <code>Setrlimit</code>
 functions under Linux on the ARM or 386 architectures, please note change
 <a href="//golang.org/cl/11803043">11803043</a>
 that fixes <a href="//golang.org/issue/5949">issue 5949</a>.
 </p>

 <h2 id="go1">go1 (released 2012/03/28)</h2>

 <p>
 Go 1 is a major release of Go that will be stable in the long term.
 Read the <a href="/doc/go1.html">Go 1 Release Notes</a> for more information.
 </p>

 <p>
 It is intended that programs written for Go 1 will continue to compile and run
 correctly, unchanged, under future versions of Go 1.
 Read the <a href="/doc/go1compat.html">Go 1 compatibility document</a> for more
 about the future of Go 1.
 </p>

 <p>
 The go1 release corresponds to
 <code><a href="weekly.html#2012-03-27">weekly.2012-03-27</a></code>.
 </p>

 <h3 id="go1.minor">Minor revisions</h3>

 <p>
 go1.0.1 (released 2012/04/25) was issued to
 <a href="//golang.org/cl/6061043">fix</a> an
 <a href="//golang.org/issue/3545">escape analysis bug</a>
 that can lead to memory corruption.
 It also includes several minor code and documentation fixes.
 </p>

 <p>
 go1.0.2 (released 2012/06/13) was issued to fix two bugs in the implementation
 of maps using struct or array keys:
 <a href="//golang.org/issue/3695">issue 3695</a> and
 <a href="//golang.org/issue/3573">issue 3573</a>.
 It also includes many minor code and documentation fixes.
 </p>

 <p>
 go1.0.3 (released 2012/09/21) includes minor code and documentation fixes.
 </p>

 <p>
 See the <a href="https://github.com/golang/go/commits/release-branch.go1">go1 release branch history</a> for the complete list of changes.
 </p>

 <h2 id="pre.go1">Older releases</h2>

 <p>
 See the <a href="pre_go1.html">Pre-Go 1 Release History</a> page for notes
 on earlier releases.
 </p>
	<!--{
	"Title": "Release History"
	}-->

	<p>This page summarizes the changes between official stable releases of Go.
	The <a href="//golang.org/change">change log</a> has the full details.</p>

	<p>To update to a specific release, use:</p>

	<pre>
	git pull
	git checkout <i>release-branch</i>
	</pre>

	<h2 id="policy">Release Policy</h2>

	<p>
	Each major Go release obsoletes and ends support for the previous one.
	For example, if Go 1.5 has been released, then it is the current release
	and Go 1.4 and earlier are no longer supported.
	We fix critical problems in the current release as needed by issuing minor revisions
	(for example, Go 1.5.1, Go 1.5.2, and so on).
	</p>

	<p>
	As a special case, we issue minor revisions for critical security problems
	in both the current release and the previous release.
	For example, if Go 1.5 is the current release then we will issue minor revisions
	to fix critical security problems in both Go 1.4 and Go 1.5 as they arise.
	See the <a href="/security">security policy</a> for more details.
	</p>

	<h2 id="go1.8">go1.8 (released 2017/02/16)</h2>

	<p>
	Go 1.8 is a major release of Go.
	Read the <a href="/doc/go1.8">Go 1.8 Release Notes</a> for more information.
	</p>

	<h2 id="go1.7">go1.7 (released 2016/08/15)</h2>

	<p>
	Go 1.7 is a major release of Go.
	Read the <a href="/doc/go1.7">Go 1.7 Release Notes</a> for more information.
	</p>

	<h3 id="go1.7.minor">Minor revisions</h3>

	<p>
	go1.7.1 (released 2016/09/07) includes fixes to the compiler, runtime,
	documentation, and the <code>compress/flate</code>, <code>hash/crc32</code>,
	<code>io</code>, <code>net</code>, <code>net/http</code>,
	<code>path/filepath</code>, <code>reflect</code>, and <code>syscall</code>
	packages.
	See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.7.1">Go
	1.7.1 milestone</a> on our issue tracker for details.
	</p>

	<p>
	go1.7.2 should not be used. It was tagged but not fully released.
	The release was deferred due to a last minute bug report.
	Use go1.7.3 instead, and refer to the summary of changes below.
	</p>

	<p>
	go1.7.3 (released 2016/10/19) includes fixes to the compiler, runtime,
	and the <code>crypto/cipher</code>, <code>crypto/tls</code>,
	<code>net/http</code>, and <code>strings</code> packages.
	See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.7.3">Go
	1.7.3 milestone</a> on our issue tracker for details.
	</p>

	<p>
	go1.7.4 (released 2016/12/01) includes two security fixes.
	See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.7.4">Go
	1.7.4 milestone</a> on our issue tracker for details.
	</p>

	<p>
	go1.7.5 (released 2017/01/26) includes fixes to the compiler, runtime,
	and the <code>crypto/x509</code> and <code>time</code> packages.
	See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.7.5">Go
	1.7.5 milestone</a> on our issue tracker for details.
	</p>

	<h2 id="go1.6">go1.6 (released 2016/02/17)</h2>

	<p>
	Go 1.6 is a major release of Go.
	Read the <a href="/doc/go1.6">Go 1.6 Release Notes</a> for more information.
	</p>

	<h3 id="go1.6.minor">Minor revisions</h3>

	<p>
	go1.6.1 (released 2016/04/12) includes two security fixes.
	See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.6.1">Go
	1.6.1 milestone</a> on our issue tracker for details.
	</p>

	<p>
	go1.6.2 (released 2016/04/20) includes fixes to the compiler, runtime, tools,
	documentation, and the <code>mime/multipart</code>, <code>net/http</code>, and
	<code>sort</code> packages.
	See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.6.2">Go
	1.6.2 milestone</a> on our issue tracker for details.
	</p>

	<p>
	go1.6.3 (released 2016/07/17) includes security fixes to the
	<code>net/http/cgi</code> package and <code>net/http</code> package when used in
	a CGI environment.
	See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.6.3">Go
	1.6.3 milestone</a> on our issue tracker for details.
	</p>

	<p>
	go1.6.4 (released 2016/12/01) includes two security fixes.
	It contains the same fixes as Go 1.7.4 and was released at the same time.
	See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.7.4">Go
	1.7.4 milestone</a> on our issue tracker for details.
	</p>

	<h2 id="go1.5">go1.5 (released 2015/08/19)</h2>

	<p>
	Go 1.5 is a major release of Go.
	Read the <a href="/doc/go1.5">Go 1.5 Release Notes</a> for more information.
	</p>

	<h3 id="go1.5.minor">Minor revisions</h3>

	<p>
	go1.5.1 (released 2015/09/08) includes bug fixes to the compiler, assembler, and
	the <code>fmt</code>, <code>net/textproto</code>, <code>net/http</code>, and
	<code>runtime</code> packages.
	See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.5.1">Go
	1.5.1 milestone</a> on our issue tracker for details.
	</p>

	<p>
	go1.5.2 (released 2015/12/02) includes bug fixes to the compiler, linker, and
	the <code>mime/multipart</code>, <code>net</code>, and <code>runtime</code>
	packages.
	See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.5.2">Go
	1.5.2 milestone</a> on our issue tracker for details.
	</p>

	<p>
	go1.5.3 (released 2016/01/13) includes a security fix to the <code>math/big</code> package
	affecting the <code>crypto/tls</code> package.
	See the <a href="https://golang.org/s/go153announce">release announcement</a> for details.
	</p>

	<p>
	go1.5.4 (released 2016/04/12) includes two security fixes.
	It contains the same fixes as Go 1.6.1 and was released at the same time.
	See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.6.1">Go
	1.6.1 milestone</a> on our issue tracker for details.
	</p>

	<h2 id="go1.4">go1.4 (released 2014/12/10)</h2>

	<p>
	Go 1.4 is a major release of Go.
	Read the <a href="/doc/go1.4">Go 1.4 Release Notes</a> for more information.
	</p>

	<h3 id="go1.4.minor">Minor revisions</h3>

	<p>
	go1.4.1 (released 2015/01/15) includes bug fixes to the linker and the <code>log</code>, <code>syscall</code>, and <code>runtime</code> packages.
	See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.4.1">Go 1.4.1 milestone on our issue tracker</a> for details.
	</p>

	<p>
	go1.4.2 (released 2015/02/17) includes bug fixes to the <code>go</code> command, the compiler and linker, and the <code>runtime</code>, <code>syscall</code>, <code>reflect</code>, and <code>math/big</code> packages.
	See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.4.2">Go 1.4.2 milestone on our issue tracker</a> for details.
	</p>

	<p>
	go1.4.3 (released 2015/09/22) includes security fixes to the <code>net/http</code> package and bug fixes to the <code>runtime</code> package.
	See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.4.3">Go 1.4.3 milestone on our issue tracker</a> for details.
	</p>

	<h2 id="go1.3">go1.3 (released 2014/06/18)</h2>

	<p>
	Go 1.3 is a major release of Go.
	Read the <a href="/doc/go1.3">Go 1.3 Release Notes</a> for more information.
	</p>

	<h3 id="go1.3.minor">Minor revisions</h3>

	<p>
	go1.3.1 (released 2014/08/13) includes bug fixes to the compiler and the <code>runtime</code>, <code>net</code>, and <code>crypto/rsa</code> packages.
	See the <a href="https://github.com/golang/go/commits/go1.3.1">change history</a> for details.
	</p>

	<p>
	go1.3.2 (released 2014/09/25) includes bug fixes to cgo and the crypto/tls packages.
	See the <a href="https://github.com/golang/go/commits/go1.3.2">change history</a> for details.
	</p>

	<p>
	go1.3.3 (released 2014/09/30) includes further bug fixes to cgo, the runtime package, and the nacl port.
	See the <a href="https://github.com/golang/go/commits/go1.3.3">change history</a> for details.
	</p>

	<h2 id="go1.2">go1.2 (released 2013/12/01)</h2>

	<p>
	Go 1.2 is a major release of Go.
	Read the <a href="/doc/go1.2">Go 1.2 Release Notes</a> for more information.
	</p>

	<h3 id="go1.2.minor">Minor revisions</h3>

	<p>
	go1.2.1 (released 2014/03/02) includes bug fixes to the <code>runtime</code>, <code>net</code>, and <code>database/sql</code> packages.
	See the <a href="https://github.com/golang/go/commits/go1.2.1">change history</a> for details.
	</p>

	<p>
	go1.2.2 (released 2014/05/05) includes a
	<a href="https://github.com/golang/go/commits/go1.2.2">security fix</a>
	that affects the tour binary included in the binary distributions (thanks to Guillaume T).
	</p>

	<h2 id="go1.1">go1.1 (released 2013/05/13)</h2>

	<p>
	Go 1.1 is a major release of Go.
	Read the <a href="/doc/go1.1">Go 1.1 Release Notes</a> for more information.
	</p>

	<h3 id="go1.1.minor">Minor revisions</h3>

	<p>
	go1.1.1 (released 2013/06/13) includes several compiler and runtime bug fixes.
	See the <a href="https://github.com/golang/go/commits/go1.1.1">change history</a> for details.
	</p>

	<p>
	go1.1.2 (released 2013/08/13) includes fixes to the <code>gc</code> compiler
	and <code>cgo</code>, and the <code>bufio</code>, <code>runtime</code>,
	<code>syscall</code>, and <code>time</code> packages.
	See the <a href="https://github.com/golang/go/commits/go1.1.2">change history</a> for details.
	If you use package syscall's <code>Getrlimit</code> and <code>Setrlimit</code>
	functions under Linux on the ARM or 386 architectures, please note change
	<a href="//golang.org/cl/11803043">11803043</a>
	that fixes <a href="//golang.org/issue/5949">issue 5949</a>.
	</p>

	<h2 id="go1">go1 (released 2012/03/28)</h2>

	<p>
	Go 1 is a major release of Go that will be stable in the long term.
	Read the <a href="/doc/go1.html">Go 1 Release Notes</a> for more information.
	</p>

	<p>
	It is intended that programs written for Go 1 will continue to compile and run
	correctly, unchanged, under future versions of Go 1.
	Read the <a href="/doc/go1compat.html">Go 1 compatibility document</a> for more
	about the future of Go 1.
	</p>

	<p>
	The go1 release corresponds to
	<code><a href="weekly.html#2012-03-27">weekly.2012-03-27</a></code>.
	</p>

	<h3 id="go1.minor">Minor revisions</h3>

	<p>
	go1.0.1 (released 2012/04/25) was issued to
	<a href="//golang.org/cl/6061043">fix</a> an
	<a href="//golang.org/issue/3545">escape analysis bug</a>
	that can lead to memory corruption.
	It also includes several minor code and documentation fixes.
	</p>

	<p>
	go1.0.2 (released 2012/06/13) was issued to fix two bugs in the implementation
	of maps using struct or array keys:
	<a href="//golang.org/issue/3695">issue 3695</a> and
	<a href="//golang.org/issue/3573">issue 3573</a>.
	It also includes many minor code and documentation fixes.
	</p>

	<p>
	go1.0.3 (released 2012/09/21) includes minor code and documentation fixes.
	</p>

	<p>
	See the <a href="https://github.com/golang/go/commits/release-branch.go1">go1 release branch history</a> for the complete list of changes.
	</p>

	<h2 id="pre.go1">Older releases</h2>

	<p>
	See the <a href="pre_go1.html">Pre-Go 1 Release History</a> page for notes
	on earlier releases.
	</p>