mirror of
https://github.com/golang/go
synced 2024-11-18 14:04:45 -07:00
40bc0a7709
Fixes #26329 Change-Id: Id87fd106e69d3d9682653eb753b1de616adeed2b Reviewed-on: https://go-review.googlesource.com/123416 Reviewed-by: Ian Lance Taylor <iant@golang.org>
410 lines
14 KiB
HTML
410 lines
14 KiB
HTML
<!--{
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"Title": "Go 1.11 Release Notes",
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"Path": "/doc/go1.11",
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"Template": true
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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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ul li { margin: 0.5em 0; }
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</style>
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<h2 id="introduction">DRAFT RELEASE NOTES - Introduction to Go 1.11</h2>
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<p>
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<strong>
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Go 1.11 is not yet released. These are work-in-progress
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release notes. Go 1.11 is expected to be released in August 2018.
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</strong>
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</p>
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<p>
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The latest Go release, version 1.11, arrives six months after <a href="go1.10">Go 1.10</a>.
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Most of its changes are in the implementation of the toolchain, runtime, and libraries.
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As always, the release maintains the Go 1 <a href="/doc/go1compat.html">promise of compatibility</a>.
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We expect almost all Go programs to continue to compile and run as before.
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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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There are no changes to the language specification.
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</p>
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<h2 id="ports">Ports</h2>
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<p>
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As <a href="go1.10#ports">announced in the Go 1.10 release notes</a>, Go 1.11 now requires
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OpenBSD 6.2 or later, macOS 10.10 Yosemite or later, or Windows 7 or later;
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Support for previous versions of these operating systems has been removed.
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</p>
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<p>
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There are <a href="https://golang.org/issue/25206">known issues</a> with NetBSD on i386 hardware.
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</p>
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<p><!-- CL 107935 -->
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TODO: PPC64LE race detector support
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</p>
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<h3 id="wasm">WebAssembly</h3>
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<p>
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Go 1.11 adds an experimental port to WebAssembly (<code>js/wasm</code>).
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</p>
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<p>
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As a result of the addition of the new <code>GOOS</code> value
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"<code>js</code>" and <code>GOARCH</code> value "<code>wasm</code>",
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Go files named <code>*_js.go</code> or <code>*_wasm.go</code> will
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now be <a href="/pkg/go/build/#hdr-Build_Constraints">ignored by Go
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tools</a> except when those GOOS/GOARCH values are being used.
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If you have existing filenames matching those patterns, you will have to rename them.
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</p>
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<h2 id="tools">Tools</h2>
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<h3 id="modules">Modules, package versioning, and dependency management</h3>
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<p>
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<strong>
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NOTE: This is not present in go1.11beta1 but will be available in future
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betas and subsequent releases.
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</strong>
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Go 1.11 adds experimental support for a new concept called “modules,”
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an alternative to GOPATH with integrated support for versioning and
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package distribution.
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Using modules, developers are no longer confined to working inside GOPATH,
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version dependency information is explicit yet lightweight,
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and builds are more reliable and reproducible.
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</p>
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<p>
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Module support is considered experimental.
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Details are likely to change in response to feedback from Go 1.11 users,
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and we have more tools planned.
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Although the details of module support may change, projects that convert
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to modules using Go 1.11 will continue to work with Go 1.12 and later.
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If you encounter bugs using modules,
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please <a href="https://golang.org/issue/new">file issues</a>
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so we can fix them.
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</p>
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<p>
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TODO: Link to intro doc.
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</p>
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<h3 id="importpath">Import path restriction</h3>
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<p>
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Because Go module support assigns special meaning to the
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<code>@</code> symbol in command line operations,
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the <code>go</code> command now disallows the use of
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import paths containing <code>@</code> symbols.
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Such import paths were never allowed by <code>go</code> <code>get</code>,
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so this restriction can only affect users building
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custom GOPATH trees by other means.
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</p>
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<h3 id="gopackages">Package loading</h2>
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<p>
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TODO: Note about go/build versus golang.org/x/tools/go/packages.
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</p>
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<h3 id="gocache">Build cache requirement</h2>
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<p>
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Go 1.11 will be the last release to support setting the environment
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variable <code>GOCACHE=off</code> to disable the
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<a href="/cmd/go/#hdr-Build_and_test_caching">build cache</a>,
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introduced in Go 1.10.
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Starting in Go 1.12, the build cache will be required,
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as a step toward eliminating <code>$GOPATH/pkg</code>.
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The module and package loading support described above
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already require that the build cache be enabled.
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If you have disabled the build cache to avoid problems you encountered,
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please <a href="https://golang.org/issue/new">file an issue</a> to let us know about them.
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</p>
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<h2 id="library">Core library</h2>
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<p>
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All of the changes to the standard library are minor.
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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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<!-- CL 113315: https://golang.org/cl/113315: cmd/asm: enable AVX512 -->
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<!-- CL 100459: https://golang.org/cl/100459: cmd/compile: reject type switch with guarded declaration and no cases -->
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<!-- CL 106797: https://golang.org/cl/106797: cmd/compile: enable indexed export format by default -->
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<!-- CL 108475: https://golang.org/cl/108475: cmd/compile: add softfloat support to mips64{,le} -->
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<!-- CL 97375: https://golang.org/cl/97375: cmd/compile, cmd/compile/internal/syntax: print relative column info -->
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<!-- CL 110395: https://golang.org/cl/110395: cmd/go, cmd/compile: use Windows response files to avoid arg length limits -->
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<!-- CL 107475: https://golang.org/cl/107475: cmd/internal/obj/arm, runtime: delete old ARM softfloat code -->
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<!-- CL 112436: https://golang.org/cl/112436: cmd/pprof: add readline support similar to upstream -->
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<dl id="all"><dt><a href="/pkg/all/">all</a></dt>
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<dd>
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<p><!-- CL 93875 -->
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TODO: <a href="https://golang.org/cl/93875">https://golang.org/cl/93875</a>: enable c-shared/c-archive support for freebsd/amd64
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</p>
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<p><!-- CL 94255 -->
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TODO: <a href="https://golang.org/cl/94255">https://golang.org/cl/94255</a>: drop support for Windows Vista or below (Windows XP)
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</p>
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<p><!-- CL 115038 -->
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TODO: <a href="https://golang.org/cl/115038">https://golang.org/cl/115038</a>: remove support for macOS 10.9 and earlier
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</p>
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</dl><!-- all -->
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<dl id="crypto"><dt><a href="/pkg/crypto/">crypto</a></dt>
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<dd>
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<p><!-- CL 64451 -->
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TODO: <a href="https://golang.org/cl/64451">https://golang.org/cl/64451</a>: randomly read an extra byte of randomness in some places.
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</p>
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</dl><!-- crypto -->
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<dl id="crypto/cipher"><dt><a href="/pkg/crypto/cipher/">crypto/cipher</a></dt>
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<dd>
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<p><!-- CL 48510, CL 116435 -->
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TODO: <a href="https://golang.org/cl/48510">https://golang.org/cl/48510</a>: add NewGCMWithTagSize for custom tag sizes.
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</p>
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</dl><!-- crypto/cipher -->
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<dl id="crypto/rsa"><dt><a href="/pkg/crypto/rsa/">crypto/rsa</a></dt>
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<dd>
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<p><!-- CL 103876 -->
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TODO: <a href="https://golang.org/cl/103876">https://golang.org/cl/103876</a>: add PublicKey.Size accessor
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</p>
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</dl><!-- crypto/rsa -->
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<dl id="debug/elf"><dt><a href="/pkg/debug/elf/">debug/elf</a></dt>
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<dd>
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<p><!-- CL 112115 -->
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TODO: <a href="https://golang.org/cl/112115">https://golang.org/cl/112115</a>: add machine and OSABI constants
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</p>
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</dl><!-- debug/elf -->
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<dl id="encoding/asn1"><dt><a href="/pkg/encoding/asn1/">encoding/asn1</a></dt>
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<dd>
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<p><!-- CL 110561 -->
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TODO: <a href="https://golang.org/cl/110561">https://golang.org/cl/110561</a>: allow Marshaling and Unmarshaling private tag class
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</p>
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</dl><!-- encoding/asn1 -->
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<dl id="encoding/base32"><dt><a href="/pkg/encoding/base32/">encoding/base32</a></dt>
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<dd>
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<p><!-- CL 112516 -->
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TODO: <a href="https://golang.org/cl/112516">https://golang.org/cl/112516</a>: handle surplus padding consistently
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</p>
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</dl><!-- encoding/base32 -->
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<dl id="encoding/csv"><dt><a href="/pkg/encoding/csv/">encoding/csv</a></dt>
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<dd>
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<p><!-- CL 99696 -->
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TODO: <a href="https://golang.org/cl/99696">https://golang.org/cl/99696</a>: disallow quote for use as Comma
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</p>
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</dl><!-- encoding/csv -->
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<dl id="go/build, runtime/internal/sys"><dt><a href="/pkg/go/build, runtime/internal/sys/">go/build, runtime/internal/sys</a></dt>
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<dd>
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<p><!-- CL 106256 -->
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TODO: <a href="https://golang.org/cl/106256">https://golang.org/cl/106256</a>: reserve RISC-V arch names
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</p>
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</dl><!-- go/build, runtime/internal/sys -->
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<dl id="image/gif"><dt><a href="/pkg/image/gif/">image/gif</a></dt>
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<dd>
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<p><!-- CL 93076 -->
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TODO: <a href="https://golang.org/cl/93076">https://golang.org/cl/93076</a>: support non-looping animated gifs (LoopCount=-1)
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</p>
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</dl><!-- image/gif -->
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<dl id="io/ioutil"><dt><a href="/pkg/io/ioutil/">io/ioutil</a></dt>
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<dd>
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<p><!-- CL 105675 -->
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TODO: <a href="https://golang.org/cl/105675">https://golang.org/cl/105675</a>: change TempFile prefix to a pattern
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</p>
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</dl><!-- io/ioutil -->
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<dl id="math/big"><dt><a href="/pkg/math/big/">math/big</a></dt>
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<dd>
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<p><!-- CL 74851 -->
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TODO: <a href="https://golang.org/cl/74851">https://golang.org/cl/74851</a>: speed-up addMulVVW on amd64
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</p>
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</dl><!-- math/big -->
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<dl id="net"><dt><a href="/pkg/net/">net</a></dt>
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<dd>
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<p><!-- CL 72810 -->
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TODO: <a href="https://golang.org/cl/72810">https://golang.org/cl/72810</a>: add ListenConfig, Dialer.Control to permit socket opts before listen/dial
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</p>
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<p><!-- CL 76391 -->
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TODO: <a href="https://golang.org/cl/76391">https://golang.org/cl/76391</a>: implement (*syscall.RawConn).Read/Write on Windows
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</p>
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<p><!-- CL 107715 -->
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TODO: <a href="https://golang.org/cl/107715">https://golang.org/cl/107715</a>: add support for splice(2) in (*TCPConn).ReadFrom on Linux
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</p>
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<p><!-- CL 108297 -->
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TODO: <a href="https://golang.org/cl/108297">https://golang.org/cl/108297</a>: calling File leaves the socket in nonblocking mode
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</p>
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</dl><!-- net -->
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<dl id="net/http"><dt><a href="/pkg/net/http/">net/http</a></dt>
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<dd>
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<p><!-- CL 89275 -->
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TODO: <a href="https://golang.org/cl/89275">https://golang.org/cl/89275</a>: don't sniff Content-type in Server when X-Content-Type-Options:nosniff
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</p>
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<p><!-- CL 93296 -->
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TODO: <a href="https://golang.org/cl/93296">https://golang.org/cl/93296</a>: add StatusMisdirectedRequest (421)
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</p>
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</dl><!-- net/http -->
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<dl id="os"><dt><a href="/pkg/os/">os</a></dt>
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<dd>
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<p><!-- CL 78835 -->
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TODO: <a href="https://golang.org/cl/78835">https://golang.org/cl/78835</a>: add UserCacheDir
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</p>
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<p><!-- CL 94856 -->
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TODO: <a href="https://golang.org/cl/94856">https://golang.org/cl/94856</a>: add ModeIrregular flag
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</p>
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<p><!-- CL 99337 -->
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TODO: <a href="https://golang.org/cl/99337">https://golang.org/cl/99337</a>: enable symlink creation on Windows 10
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</p>
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<p><!-- CL 100077 -->
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TODO: <a href="https://golang.org/cl/100077">https://golang.org/cl/100077</a>: use poller when NewFile is called with a blocking descriptor.
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</p>
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</dl><!-- os -->
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<dl id="os/signal"><dt><a href="/pkg/os/signal/">os/signal</a></dt>
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<dd>
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<p><!-- CL 108376 -->
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TODO: <a href="https://golang.org/cl/108376">https://golang.org/cl/108376</a>: add func Ignored(sig Signal) bool
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</p>
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</dl><!-- os/signal -->
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<dl id="os/user"><dt><a href="/pkg/os/user/">os/user</a></dt>
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<dd>
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<p><!-- CL 92456 -->
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TODO: <a href="https://golang.org/cl/92456">https://golang.org/cl/92456</a>: add a way to enforce pure Go implementation
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</p>
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</dl><!-- os/user -->
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<dl id="runtime"><dt><a href="/pkg/runtime/">runtime</a></dt>
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<dd>
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<p><!-- CL 85887 -->
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TODO: <a href="https://golang.org/cl/85887">https://golang.org/cl/85887</a>: use sparse mappings for the heap
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</p>
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<p><!-- CL 94076 -->
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TODO: <a href="https://golang.org/cl/94076">https://golang.org/cl/94076</a>: use native CAS and memory barrier on ARMv7
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</p>
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<p><!-- CL 106156 -->
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TODO: <a href="https://golang.org/cl/106156">https://golang.org/cl/106156</a>: use fixed TLS offsets on darwin/amd64 and darwin/386
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</p>
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<p><!-- CL 109255 -->
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TODO: <a href="https://golang.org/cl/109255">https://golang.org/cl/109255</a>: enable memory sanitizer on arm64
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</p>
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</dl><!-- runtime -->
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<dl id="runtime,cmd/ld"><dt><a href="/pkg/runtime,cmd/ld/">runtime,cmd/ld</a></dt>
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<dd>
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<p><!-- CL 108679 -->
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TODO: <a href="https://golang.org/cl/108679">https://golang.org/cl/108679</a>: on darwin, create theads using libc
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</p>
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</dl><!-- runtime,cmd/ld -->
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<dl id="runtime/pprof"><dt><a href="/pkg/runtime/pprof/">runtime/pprof</a></dt>
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<dd>
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<p><!-- CL 102696 -->
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TODO: <a href="https://golang.org/cl/102696">https://golang.org/cl/102696</a>: introduce "allocs" profile
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</p>
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</dl><!-- runtime/pprof -->
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<dl id="runtime/traceback"><dt><a href="/pkg/runtime/traceback/">runtime/traceback</a></dt>
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<dd>
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<p><!-- CL 70993 -->
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TODO: <a href="https://golang.org/cl/70993">https://golang.org/cl/70993</a>: support tracking goroutine ancestor tracebacks with GODEBUG="tracebackancestors=N"
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</p>
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</dl><!-- runtime/traceback -->
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<dl id="sync"><dt><a href="/pkg/sync/">sync</a></dt>
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<dd>
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<p><!-- CL 87095 -->
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TODO: <a href="https://golang.org/cl/87095">https://golang.org/cl/87095</a>: enable profiling of RWMutex
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</p>
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</dl><!-- sync -->
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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 106275 -->
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TODO: <a href="https://golang.org/cl/106275">https://golang.org/cl/106275</a>: introduce Pointer type and use it instead of uintptr
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</p>
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</dl><!-- syscall -->
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<dl id="text/scanner"><dt><a href="/pkg/text/scanner/">text/scanner</a></dt>
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<dd>
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<p><!-- CL 112037 -->
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TODO: <a href="https://golang.org/cl/112037">https://golang.org/cl/112037</a>: return RawString token rather than String for raw string literals
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</p>
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</dl><!-- text/scanner -->
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<dl id="text/template"><dt><a href="/pkg/text/template/">text/template</a></dt>
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<dd>
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<p><!-- CL 84480 -->
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TODO: <a href="https://golang.org/cl/84480">https://golang.org/cl/84480</a>: add variable assignments
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</p>
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</dl><!-- text/template -->
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<dl id="time"><dt><a href="/pkg/time/">time</a></dt>
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<dd>
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<p><!-- CL 98157 -->
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TODO: <a href="https://golang.org/cl/98157">https://golang.org/cl/98157</a>: add support for parsing timezones denoted by sign and offset
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</p>
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</dl><!-- time -->
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