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For #43684 Change-Id: I9ce47de82203ec87e7d3683f56e6c6d61ae255f5 Reviewed-on: https://go-review.googlesource.com/c/go/+/352151 Trust: Jay Conrod <jayconrod@google.com> Run-TryBot: Jay Conrod <jayconrod@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Bryan C. Mills <bcmills@google.com>
143 lines
4.5 KiB
HTML
143 lines
4.5 KiB
HTML
<!--{
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"Title": "Go 1.18 Release Notes",
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"Path": "/doc/go1.18"
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}-->
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<!--
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NOTE: In this document and others in this directory, the convention is to
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set fixed-width phrases with non-fixed-width spaces, as in
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<code>hello</code> <code>world</code>.
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Do not send CLs removing the interior tags from such phrases.
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-->
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<style>
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main ul li { margin: 0.5em 0; }
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</style>
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<h2 id="introduction">DRAFT RELEASE NOTES — Introduction to Go 1.18</h2>
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<p>
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<strong>
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Go 1.18 is not yet released. These are work-in-progress
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release notes. Go 1.18 is expected to be released in February 2022.
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</strong>
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</p>
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<h2 id="language">Changes to the language</h2>
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<p>
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TODO: complete this section
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</p>
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<h2 id="ports">Ports</h2>
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<p>
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TODO: complete this section, or delete if not needed
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</p>
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<h2 id="tools">Tools</h2>
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<p>
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TODO: complete this section, or delete if not needed
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</p>
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<h3 id="go-command">Go command</h3>
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<p><!-- golang.org/issue/43684 -->
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<code>go</code> <code>get</code> no longer builds or installs packages in
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module-aware mode. <code>go</code> <code>get</code> is now dedicated to
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adjusting dependencies in <code>go.mod</code>. Effectively, the
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<code>-d</code> flag is always enabled. To install the latest version
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of an executable outside the context of the current module, use
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<a href="https://golang.org/ref/mod#go-install"><code>go</code>
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<code>install</code> <code>example.com/cmd@latest</code></a>. Any
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<a href="https://golang.org/ref/mod#version-queries">version query</a>
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may be used instead of <code>latest</code>. This form of <code>go</code>
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<code>install</code> was added in Go 1.16, so projects supporting older
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versions may need to provide install instructions for both <code>go</code>
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<code>install</code> and <code>go</code> <code>get</code>. <code>go</code>
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<code>get</code> now reports an error when used outside a module, since there
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is no <code>go.mod</code> file to update. In GOPATH mode (with
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<code>GO111MODULE=off</code>), <code>go</code> <code>get</code> still builds
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and installs packages, as before.
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</p>
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<p>
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TODO: complete this section, or delete if not needed
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</p>
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<h3 id="gofmt"><code>gofmt</code></h3>
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<p><!-- https://golang.org/issue/43566 -->
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<code>gofmt</code> now reads and formats input files concurrently, with a
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memory limit proportional to <code>GOMAXPROCS</code>. On a machine with
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multiple CPUs, gofmt should now be significantly faster.
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</p>
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<h2 id="runtime">Runtime</h2>
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<p>
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TODO: complete this section, or delete if not needed
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</p>
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<h2 id="compiler">Compiler</h2>
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<p>
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TODO: complete this section, or delete if not needed
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</p>
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<h2 id="linker">Linker</h2>
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<p>
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TODO: complete this section, or delete if not needed
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</p>
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<h2 id="library">Core library</h2>
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<p>
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TODO: complete this section
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</p>
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<h3 id="minor_library_changes">Minor changes to the library</h3>
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<p>
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As always, there are various minor changes and updates to the library,
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made with the Go 1 <a href="/doc/go1compat">promise of compatibility</a>
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in mind.
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</p>
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<p>
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TODO: complete this section
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</p>
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<dl id="image/draw"><dt><a href="/pkg/image/draw/">image/draw</a></dt>
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<dd>
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<p><!-- CL 340049 -->
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The <code>Draw</code> and <code>DrawMask</code> fallback implementations
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(used when the arguments are not the most common image types) are now
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faster when those arguments implement the optional
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<a href="/pkg/image/draw/#RGBA64Image"><code>draw.RGBA64Image</code></a>
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and <a href="/pkg/image/#RGBA64Image"><code>image.RGBA64Image</code></a>
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interfaces that were added in Go 1.17.
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</p>
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</dd>
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</dl><!-- image/draw -->
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<dl id="syscall"><dt><a href="/pkg/syscall/">syscall</a></dt>
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<dd>
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<p><!-- CL 336550 -->
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The new function <a href="/pkg/syscall/?GOOS=windows#SyscallN"><code>SyscallN</code></a>
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has been introduced for Windows, allowing for calls with arbitrary number
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of arguments. As results,
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<a href="/pkg/syscall/?GOOS=windows#Syscall"><code>Syscall</code></a>,
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<a href="/pkg/syscall/?GOOS=windows#Syscall6"><code>Syscall6</code></a>,
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<a href="/pkg/syscall/?GOOS=windows#Syscall9"><code>Syscall9</code></a>,
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<a href="/pkg/syscall/?GOOS=windows#Syscall12"><code>Syscall12</code></a>,
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<a href="/pkg/syscall/?GOOS=windows#Syscall15"><code>Syscall15</code></a>, and
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<a href="/pkg/syscall/?GOOS=windows#Syscall18"><code>Syscall18</code></a> are
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deprecated in favor of <a href="/pkg/syscall/?GOOS=windows#SyscallN"><code>SyscallN</code></a>.
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</p>
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</dd>
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</dl><!-- syscall -->
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