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Commit Graph

4216 Commits

Author SHA1 Message Date
Russ Cox
eb413f7bcd doc/go1.21: move Ports to end
The most important parts of almost any release notes are the
language and tool changes. Those should be the first two sections.
Instead Ports interrupts the flow with information that usually
matters only to very few users.

Move Ports to the end of the release notes.

Change-Id: I78492e91e368184fb5f8e8d44d63f35b8f14eeae
Reviewed-on: https://go-review.googlesource.com/c/go/+/500957
TryBot-Bypass: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-06-05 18:24:28 +00:00
Tobias Klauser
587c1c191a doc/go1.21: fix link in debug/elf section
Change-Id: Ief3e263e6c11069abbbf4dd8ce10c317e3a1cab2
Reviewed-on: https://go-review.googlesource.com/c/go/+/500815
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
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2023-06-05 16:41:14 +00:00
Dmitri Shuralyov
6260049fa2 doc/go1.21: document macOS and Windows requirements
For #58645.
Fixes #57125.
Fixes #57003.
Fixes #57004.

Change-Id: I365929ca36aeb32e9ecd19f870e70869933ba6a0
Reviewed-on: https://go-review.googlesource.com/c/go/+/500239
Reviewed-by: Eli Bendersky <eliben@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2023-06-02 19:54:05 +00:00
qmuntal
ae71a862b1 doc/go1.21: document that os.TempDir now uses GetTempPath2W
Updates #56899

Change-Id: Ibde69cd55c81ac0bb757b28b28d69463778dd117
Reviewed-on: https://go-review.googlesource.com/c/go/+/500255
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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2023-06-02 17:07:06 +00:00
Alan Donovan
fdbc66d6dd math/big: rename Int.ToFloat64 to Float64
The "To" prefix was a relic of the first draft
that I failed to make consistent with the unprefixed
name used in the proposal. Fortunately iant spotted
it during the API audit.

Updates #56984
Updates #60560

Change-Id: Ifa6eeddf6dd5f0637c0568e383f9a4bef88b10f9
Reviewed-on: https://go-review.googlesource.com/c/go/+/500116
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2023-06-02 14:22:24 +00:00
Roland Shoemaker
40c7be9b0f doc/go1.21: crypto release notes
Updates #58645

Change-Id: Ib7e2baba41bb327d8fc466afb1e117fe2f22e1c9
Reviewed-on: https://go-review.googlesource.com/c/go/+/499637
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Roland Shoemaker <roland@golang.org>
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2023-06-01 23:34:15 +00:00
Ian Lance Taylor
73a29bad0b doc/go1.21: correct links in go/build note
Change-Id: Ie84cad994c1ffb2c91ce45b2dfb9257e6a7f309b
Reviewed-on: https://go-review.googlesource.com/c/go/+/499957
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2023-06-01 17:35:10 +00:00
Tobias Klauser
300f24400a doc/go1.21: fix io/fs.ReadDirFS link formatting
Change-Id: I348ac0c0e098f027b8d608a260ee9437d2b77539
Reviewed-on: https://go-review.googlesource.com/c/go/+/499835
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2023-06-01 17:29:55 +00:00
Eli Bendersky
691b6ca3de doc: remove relnote TODO by merging with another section
This change was already described in the linker section.

Change-Id: I3e36dbd66b3b53c5f0063b0d67d8773383f1f77f
Reviewed-on: https://go-review.googlesource.com/c/go/+/499817
Auto-Submit: Eli Bendersky <eliben@google.com>
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2023-06-01 17:13:46 +00:00
Ian Lance Taylor
990113f3a0 doc/go1.21: reformat flag init change note
It reads better as a single paragraph. Also added links.

Change-Id: Id6ba54111b63fbd536423272f674e0eb64b087a7
Reviewed-on: https://go-review.googlesource.com/c/go/+/499956
TryBot-Bypass: Ian Lance Taylor <iant@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-06-01 16:14:15 +00:00
Ian Lance Taylor
fecb31f672 doc/go1.21: remove some references to reverted CLs
Change-Id: Id9a8871af9cc3ac26be539877f2eea3462db6f3d
Reviewed-on: https://go-review.googlesource.com/c/go/+/499955
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2023-06-01 16:02:44 +00:00
Ian Lance Taylor
a469983943 doc/go1.21: fix type in closing tag
Change-Id: Ibcdedb8222a80c0478f783f4a1800e472dbe062c
Reviewed-on: https://go-review.googlesource.com/c/go/+/499935
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2023-06-01 16:02:23 +00:00
Eli Bendersky
2ea592c543 doc: add release note for go:wasmimport
Change-Id: I9c6fc4c7e24d0e78086d95dccd61e80bd5ddd856
Reviewed-on: https://go-review.googlesource.com/c/go/+/499815
Auto-Submit: Eli Bendersky‎ <eliben@golang.org>
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Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
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2023-06-01 15:56:20 +00:00
Eli Bendersky
5f695f7072 doc: add release note for cgo error on methods on C types
Change-Id: Ibc5f23f37e5bd45034771a0205eadac3072d6870
Reviewed-on: https://go-review.googlesource.com/c/go/+/499816
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Reviewed-by: Alan Donovan <adonovan@google.com>
Auto-Submit: Eli Bendersky <eliben@google.com>
2023-06-01 14:43:34 +00:00
Michael Pratt
65dcddeb4e doc/go1.21: document PGO GA and devirtualization
For #59959.
For #58645.

Change-Id: I574153ef2fd61a5e90ec281fca065c42fce22cc1
Reviewed-on: https://go-review.googlesource.com/c/go/+/498263
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2023-06-01 13:54:10 +00:00
Tobias Klauser
b25dff2efe doc/go1.21: document that os.DirFS implements fs.Read{File,Dir}FS
Also add a missing </a> in the preceding section.

For #53761

Change-Id: I8e64b86b5b32067f954d58cf9adf86cb4d2eeb2b
Reviewed-on: https://go-review.googlesource.com/c/go/+/499735
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2023-06-01 12:43:18 +00:00
Ian Lance Taylor
fdd9911d1a doc/go1.21: remove math.Compare TODOs
Change-Id: I975b437240df03da84f2ce7c47f7a0097a597f25
Reviewed-on: https://go-review.googlesource.com/c/go/+/499638
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2023-05-31 21:57:05 +00:00
Jonathan Amsterdam
0b9348fceb go1.21.html: describe testing/slogtest package
Change-Id: I734aae67d410073056388852cd94776c7483b4b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/498273
Run-TryBot: Jonathan Amsterdam <jba@google.com>
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2023-05-31 21:29:18 +00:00
Robert Griesemer
4f51db24f4 doc/go1.21: document type inference changes
For #39661.
For #41176.
For #51593.
For #52397.
For #57192.
For #58645.
For #58650.
For #58671.
For #59338.
For #59750.
For #60353.

Change-Id: Ib731c9f2879beb541f44cb10e40c36a8677d3ad4
Reviewed-on: https://go-review.googlesource.com/c/go/+/499282
TryBot-Bypass: Robert Griesemer <gri@google.com>
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2023-05-31 21:29:10 +00:00
Michael Pratt
01e703c2f6 doc/go1.21: mention improvement to C-to-Go calls
For #51676.
For #58645.

Change-Id: I9045051b5a25c6dfc833eef13e6c105a0d8ae763
Reviewed-on: https://go-review.googlesource.com/c/go/+/499716
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2023-05-31 21:27:40 +00:00
Jonathan Amsterdam
eee6f2b921 go1.21.html: remove log/slog package "changes"
Since log/slog doesn't appear in earlier Go versions, we don't need
to document these proposals as changes.

Change-Id: Iae6ed9ca6bd22d8c46c21deece9ddedf7d739032
Reviewed-on: https://go-review.googlesource.com/c/go/+/498272
Run-TryBot: Jonathan Amsterdam <jba@google.com>
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2023-05-31 21:23:25 +00:00
Tobias Klauser
f07901dc4e doc/go1.21: fix link in WTF-8 section
Change-Id: I8fbba7ca5a148ff6523be412991af0c089e7f7ea
Reviewed-on: https://go-review.googlesource.com/c/go/+/499516
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2023-05-31 20:36:31 +00:00
Ian Lance Taylor
4406e8ef46 doc/go1.21: mention upgrade to Unicode 15.0.0
For #48621
For #55079

Change-Id: I279b4fbf07d2fa9de9577559a4e17a57f5692aa3
Reviewed-on: https://go-review.googlesource.com/c/go/+/499618
Reviewed-by: Eli Bendersky <eliben@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2023-05-31 19:15:28 +00:00
Ian Lance Taylor
3cea9e6881 doc/go1.21: document new bytes.Buffer methods
For #53685

Change-Id: I237297d19afeb36ad738074d0c61caa7012f65ac
Reviewed-on: https://go-review.googlesource.com/c/go/+/499617
Reviewed-by: Eli Bendersky <eliben@google.com>
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2023-05-31 19:15:27 +00:00
Ian Lance Taylor
481665ec07 doc/go1.21: mention debug/elf changes
For #55107
For #56887
For #56892

Change-Id: Ibcca34c931ed3595d877c4573bba221dec66bb5a
Reviewed-on: https://go-review.googlesource.com/c/go/+/499616
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2023-05-31 19:08:24 +00:00
Ian Lance Taylor
077194538c doc/go1.21: reading from debug/pe uninitialized section fails
For #47653

Change-Id: Id44c9dba58966f43f188030a53343d890a6ffde7
Reviewed-on: https://go-review.googlesource.com/c/go/+/499419
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2023-05-31 16:26:00 +00:00
Ian Lance Taylor
30f8d5b69d doc/go1.21: mention that embedded files implement ReadAt
For #57803

Change-Id: I8e33f4dd3fc3071bfbf4d2848faefbe8488f5742
Reviewed-on: https://go-review.googlesource.com/c/go/+/499418
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2023-05-31 16:25:59 +00:00
Ian Lance Taylor
d329fc5b30 doc/go1.21: mention flag.BoolFunc
For #53747

Change-Id: Ia5e2f89c1184f2dfd6d672b838b0dbb579e6c954
Reviewed-on: https://go-review.googlesource.com/c/go/+/499417
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2023-05-31 16:25:16 +00:00
Ian Lance Taylor
39bafed102 doc/go1.21: document io/fs formatting functions
Also document the new String methods that call them.

For #54451

Change-Id: I5cd7e0fc6c84097bba6d29c4d6012ed3c8bb1e0d
Reviewed-on: https://go-review.googlesource.com/c/go/+/499177
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2023-05-31 16:24:42 +00:00
Ian Lance Taylor
8870c05b60 doc/go1.21: mention directive handling in go/{ast,build}
For #56986
For #59033

Change-Id: I7d03fe34d418aff97a551b236b5d43506e402871
Reviewed-on: https://go-review.googlesource.com/c/go/+/499415
TryBot-Bypass: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Bryan Mills <bcmills@google.com>
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2023-05-31 16:18:26 +00:00
qmuntal
bfa3284f9b doc: document WER and SEH changes in Go 1.21
While here, I've removed the CL 472195 TODO, which I marked as
RELNOTE=yes by mistake.

For #57441
For #57302

Change-Id: I7563140bf307f8d732f0154d02b8fa0735527323
Reviewed-on: https://go-review.googlesource.com/c/go/+/499515
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2023-05-31 15:10:27 +00:00
Keith Randall
094c75219a doc: document new panic behavior of flag definition after Set
For #57411

Change-Id: I56c112bb03dde24c2e2643c9b72ce06158a8e717
Reviewed-on: https://go-review.googlesource.com/c/go/+/499278
TryBot-Bypass: Keith Randall <khr@golang.org>
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2023-05-30 22:16:11 +00:00
Keith Randall
2a129f3e8a doc: document change of cgocheck=2 from debug to experiment
Change-Id: I98bdfe8ab338a5b92c466a5aacfa95266171e5c3
Reviewed-on: https://go-review.googlesource.com/c/go/+/499279
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2023-05-30 22:15:34 +00:00
Keith Randall
4497b12344 doc: mention the new purego implementation of hash/maphash
Change-Id: Ieedddf52ae09cf5a8e9347f0f30aff21e8369787
Reviewed-on: https://go-review.googlesource.com/c/go/+/499281
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2023-05-30 22:14:56 +00:00
Keith Randall
993707a9d6 doc: mention improvements in checking R15 use in assembly when dynamic linking
Change-Id: I223649818763c0620875c034a77a8865252e3e69
Reviewed-on: https://go-review.googlesource.com/c/go/+/499280
Reviewed-by: Keith Randall <khr@google.com>
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TryBot-Bypass: Keith Randall <khr@golang.org>
2023-05-30 20:19:54 +00:00
Cherry Mui
348fd6389b doc/go1.21: fix HTML tag
Fix a broken HTML tag.

Change-Id: I9e7c65c2cc12c7b14ca205f78b78ac1e9c92a3ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/499355
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2023-05-30 19:27:48 +00:00
Ian Lance Taylor
5ad676a7ce doc/go1.21: mention errors.ErrUnsupported
Also mention errors that implement it.

For #41198

Change-Id: I4f01b112f53b19e2494b701bb012cb2cb52f8962
Reviewed-on: https://go-review.googlesource.com/c/go/+/498775
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2023-05-30 16:37:02 +00:00
Ian Lance Taylor
41bd7f54bc doc/go1.21: mention maps package
For #57436

Change-Id: I99e8b0819c76f1ccf12154a894c9c4c9d68124d4
Reviewed-on: https://go-review.googlesource.com/c/go/+/498602
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2023-05-30 16:27:41 +00:00
Ian Lance Taylor
7ea03753b4 doc/go1.21: mention multipath TCP support
For #56539
For #59166

Change-Id: Ief392464916a1a74a8fcc6c3c7bdb213e8c6ef98
Reviewed-on: https://go-review.googlesource.com/c/go/+/498601
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2023-05-30 16:18:38 +00:00
Ian Lance Taylor
ccc42b0f91 doc/go1.21: document clear builtin and init order changes
Also move all the language changes to the same part of the release notes.

For #56351
For #57411

Change-Id: Id1c51b5eb8f7d85e61a2ae44ee7d73bb13036631
Reviewed-on: https://go-review.googlesource.com/c/go/+/498755
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2023-05-27 02:02:49 +00:00
Ian Lance Taylor
6e248b8ff2 doc/go1.21: mention os package changes
Also mention WTF-8 support in the syscall package.

For #32558
For #58977
For #59971

Change-Id: Id1627889b5e498add498748d9bfc69fb58030b35
Reviewed-on: https://go-review.googlesource.com/c/go/+/498600
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2023-05-26 23:40:46 +00:00
Ian Lance Taylor
c2bb350d80 doc/go1.21: mention changes to the reflect package
Added Value.Clear, deprecated SliceHeader and StringHeader.

For #55002
For #56906

Change-Id: Ib7497aff830d56fad90c31ec28596e71a448e9ce
Reviewed-on: https://go-review.googlesource.com/c/go/+/498757
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2023-05-26 23:31:44 +00:00
Ian Lance Taylor
dcb27e8a66 doc/go1.21: mention regexp.MarshalText and UnmarshalText
For #46159

Change-Id: Ia9cc0827a89d362532d1a662b791de8eebbfb2fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/498756
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Auto-Submit: Ian Lance Taylor <iant@google.com>
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Run-TryBot: Ian Lance Taylor <iant@golang.org>
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2023-05-26 23:31:22 +00:00
Ian Lance Taylor
699a6bfbfc doc/go1.21: remove TODOs for x/ repos
Remove x/ repos changes that aren't part of the 1.21 release.

Change-Id: Ia5cbf02ed6c0cc4dc0ff80d68403723b3f9ae0ba
Reviewed-on: https://go-review.googlesource.com/c/go/+/498596
Run-TryBot: Ian Lance Taylor <iant@google.com>
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2023-05-26 21:29:06 +00:00
Alan Donovan
869af57260 doc: release notes for my humble contributions to go1.21
Updates #58645

Change-Id: Ieb4e6062613e26826ba8373cb4c2fd9198d0c692
Reviewed-on: https://go-review.googlesource.com/c/go/+/496116
Reviewed-by: Eli Bendersky <eliben@google.com>
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2023-05-26 18:02:00 +00:00
Ian Lance Taylor
c2633dfe77 doc/go1.21: mention syscall package changes
One of the changes also affects the os package, so mention it
there too.

For #46259

Change-Id: I8041a5ce009725ab210118ee668fc94196d9ff82
Reviewed-on: https://go-review.googlesource.com/c/go/+/498376
Run-TryBot: Ian Lance Taylor <iant@google.com>
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2023-05-26 17:09:12 +00:00
Than McIntosh
13be9fa7f8 doc: add release note on dead global map variable deletion
Add a short release note blurb on linker dead-coding of global map
variables.

Updates #58645.

Change-Id: Ibfdd3e2b2b78517db4245b1d7eedd5e75a643b47
Reviewed-on: https://go-review.googlesource.com/c/go/+/498575
Reviewed-by: Eli Bendersky <eliben@google.com>
TryBot-Bypass: Than McIntosh <thanm@google.com>
2023-05-26 16:21:12 +00:00
Ian Lance Taylor
f89d575d9e doc/go1.21: mention new go test -fullpath option
For #37708

Change-Id: I7b04d6331c15771c7d74ff77afd523c435e0dafe
Reviewed-on: https://go-review.googlesource.com/c/go/+/498396
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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2023-05-26 13:43:41 +00:00
Dan Peterson
f90b4cd655 doc: fill out net/http.ErrSchemeMismatch note
For #44855

Change-Id: I517394b227ea948ed3e1f9ffdaab2bb2676863c8
Reviewed-on: https://go-review.googlesource.com/c/go/+/496795
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2023-05-26 03:21:41 +00:00
Robert Griesemer
f0e356a07d doc: add release notes for new min/max built-ins
For #59488.

Change-Id: Iefabb06014767c5f633082a112a81e9ff5f09a30
Reviewed-on: https://go-review.googlesource.com/c/go/+/498397
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2023-05-25 22:02:08 +00:00
Ian Lance Taylor
ee6b9dd47f doc/go1.21: merge x/exp/slices issue into slices package
For #57348

Change-Id: I84943711b033d63f0993133f93d9f09ce2af5965
Reviewed-on: https://go-review.googlesource.com/c/go/+/498395
Reviewed-by: Eli Bendersky <eliben@google.com>
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2023-05-25 21:41:53 +00:00
Robert Griesemer
f9d114d0e8 spec: document min and max built-ins
For #59488.

Change-Id: I50f65216bf02b42c1e0619702833f4a6dbed8925
Reviewed-on: https://go-review.googlesource.com/c/go/+/498136
Reviewed-by: Rob Pike <r@golang.org>
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2023-05-25 21:09:38 +00:00
Eli Bendersky
01b5cce626 doc: add release notes for additions to the slices package
Updates #60091

Change-Id: I7438811f4e41a2977acbb5ac74c22a02c28c6597
Reviewed-on: https://go-review.googlesource.com/c/go/+/498175
Reviewed-by: Eli Bendersky <eliben@google.com>
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2023-05-25 21:01:03 +00:00
Robert Griesemer
15a4e0d970 spec: re-order built-ins sections alphabetically (more or less)
Put the sections for the various built-ins into alphabetical order
based on the built-in name, while keeping built-ins that belong
together together.

The order is now (captialized letter determines order):

- Append
- Clear
- Close
- Complex, real, imag
- Delete
- Len, cap
- Make
- Min, max (to be inserted here)
- New
- Panic, recover
- Print, println

There are some white space adjustments but no changes to the prose
of the moved sections.

Change-Id: Iaec509918c6bc965df3f28656374de03279bdc9e
Reviewed-on: https://go-review.googlesource.com/c/go/+/498135
Reviewed-by: Robert Griesemer <gri@google.com>
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2023-05-24 22:24:59 +00:00
Brad Fitzpatrick
9b41418074 cmd/go/internal/cache: use internal/godebug for three GODEBUGs
And register/document them.

Change-Id: If0f1cf3c09230e0f63d03c52e56e51a030468ab2
Reviewed-on: https://go-review.googlesource.com/c/go/+/487655
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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2023-05-24 22:05:27 +00:00
Michael Anthony Knyszek
97f56645e2 doc: add release note for runtime/metrics additions
For #56857.

Change-Id: I03bdba906d271d97ce29874c50d5aba55dc285b1
Reviewed-on: https://go-review.googlesource.com/c/go/+/498075
Run-TryBot: Michael Knyszek <mknyszek@google.com>
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2023-05-24 21:47:00 +00:00
Michael Anthony Knyszek
b03d12176d doc: write various runtime-related release notes
This includes release notes for several small runtime changes, including
runtime/trace and runtime package changes.

For #58645.

Change-Id: I3e9c804da1bb6b385088e16a20d9576c11098021
Reviewed-on: https://go-review.googlesource.com/c/go/+/497095
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2023-05-23 17:30:52 +00:00
Jonathan Amsterdam
858c61b57e doc: add slog to release notes
Updates #58645

Change-Id: Ice8f115f00c62dcffd0c7b78bb8a7d66d832075d
Reviewed-on: https://go-review.googlesource.com/c/go/+/496194
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2023-05-22 00:43:01 +00:00
Alan Donovan
3ca52f4c31 slices: add in-place Reverse function
Fixes #58565

Change-Id: I583f8380c12386178fb18e553322bbb019d9fae0
Reviewed-on: https://go-review.googlesource.com/c/go/+/468855
Run-TryBot: Alan Donovan <adonovan@google.com>
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2023-05-19 00:43:02 +00:00
Heschi Kreinick
38ae922b9b doc: add TODOs to go1.21
Generated with relnote. I did my best to put things where they made
sense, but some weren't obvious, like the Unicode upgrade and backward
compatibility stuff.

For #58645.

Change-Id: Ic3cd9ef32cec7591ace4d2df1da40e4afd97d083
Reviewed-on: https://go-review.googlesource.com/c/go/+/496316
Auto-Submit: Heschi Kreinick <heschi@google.com>
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2023-05-18 22:21:11 +00:00
Cherry Mui
33a601bf7d doc/go1.21: fix HTML formatting
Fix formatting mistakes in my previous CLs -- a missing code tag
and a broken comment tag.

Change-Id: I7f558f59b4e8fe9cb398d0093e5389b968d89eb3
Reviewed-on: https://go-review.googlesource.com/c/go/+/496115
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2023-05-18 13:41:27 +00:00
Cherry Mui
0b86a04db0 doc/go1.21: document that -pgo=auto enabled by default
Updates #58099.

Change-Id: I95c0397add696f677c86ab7618482e07eb4e9fda
Reviewed-on: https://go-review.googlesource.com/c/go/+/495477
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2023-05-17 22:11:31 +00:00
Cherry Mui
16a0b7fddb doc/go1.21: document wasip1 port
Updates #58141.

Change-Id: Iad11e7880efb37e9a1e17daf48d36b886725f75d
Reviewed-on: https://go-review.googlesource.com/c/go/+/495476
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2023-05-17 17:04:07 +00:00
Cherry Mui
51fe7062d3 doc/go1.21: document reflect.Value escape improvements
With CL 408826, CL 413474, etc. reflect.ValueOf no longer
unconditionally escapes its argument, allowing a Value's content
to be allocated on the stack.

Change-Id: I3a0af85c11e2fd0df42b056095565f0ce5548886
Reviewed-on: https://go-review.googlesource.com/c/go/+/494657
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Reviewed-by: Austin Clements <austin@google.com>
2023-05-16 21:37:42 +00:00
Sameer Ajmani
1d00dc3985 doc: fix typo in Go 1.21 release notes
Change-Id: Ib32567fdd12079cd171a4e1bc118ce27d8ce2a5d
Reviewed-on: https://go-review.googlesource.com/c/go/+/488035
Run-TryBot: Sameer Ajmani <sameer@golang.org>
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2023-04-24 18:13:34 +00:00
Damien Neil
b4b70a4617 doc: add release notes for new context functions
For #40221
For #56661
For #57928

Change-Id: Iaf7425bb26eeb9c23235d13c786d5bb572159481
Reviewed-on: https://go-review.googlesource.com/c/go/+/486535
Run-TryBot: Damien Neil <dneil@google.com>
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2023-04-20 13:01:21 +00:00
Daniel Frederick Crisman
e7b04a3e16 doc: correct spelling on placeholder
"placeholder" (no space) is already used in the spec and seems to be
the preferred option.

Removed space from "place holder".

Change-Id: I9b98f62f0e3f5adb019b99f5271cc9d19abf505e
GitHub-Last-Rev: ed5aaf9d02
GitHub-Pull-Request: golang/go#59626
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2023-04-13 23:15:09 +00:00
Daniel Frederick Crisman
6e8eec7328 doc: add missing oxford comma in Constants
In the language specification under "Constants" the lists matching default
types to untyped contstant types is missing an Oxford comma in the first
list. I found a number of other places in the spec and #23442 that use the
Oxford comma to support its use.

Add missing Oxford comma in Constants default type list.

Change-Id: I4562d692610334bc82452db076145d2414617a04
GitHub-Last-Rev: 8acdb60d6e
GitHub-Pull-Request: golang/go#59528
Reviewed-on: https://go-review.googlesource.com/c/go/+/483555
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2023-04-11 17:02:02 +00:00
cui fliter
df6d442c38 doc: fix "are" to "or" in core types
Fixes #59506

Change-Id: I2f8b92e93b706b061ca0eb0bd52e5cf798ce9ede
Reviewed-on: https://go-review.googlesource.com/c/go/+/483358
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2023-04-11 01:45:40 +00:00
Michael Anthony Knyszek
0d719823af html/template,mime/multipart: document new GODEBUG settings
This change documents the new GODEBUG settings introduced for
html/template and mime/multipart, released with Go 1.19.8 and Go 1.20.3
as part of a security fix.

Updates #59153.
Updates #59234.

Change-Id: I25f4d8245da3301dccccfb44da8ff1a5985392a4
Reviewed-on: https://go-review.googlesource.com/c/go/+/482238
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2023-04-05 15:42:48 +00:00
Russ Cox
45eded3afd doc: fix template mistake in godebug.md
This file is itself template input, so have to hide the template
in the go command example.

Change-Id: Ifc4eaff35ca8dc2fb479f8e28d64c06b2a9c9d3b
Reviewed-on: https://go-review.googlesource.com/c/go/+/480995
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2023-04-03 17:06:45 +00:00
Austin Clements
bb44c2b54e sync: implement OnceFunc, OnceValue, and OnceValues
This adds the three functions from #56102 to the sync package. These
provide a convenient API for the most common uses of sync.Once.

The performance of these is comparable to direct use of sync.Once:

$ go test -run ^$ -bench OnceFunc\|OnceVal -count 20 | benchstat -row .name -col /v
goos: linux
goarch: amd64
pkg: sync
cpu: 11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz
          │     Once     │                Global                 │                Local                 │
          │    sec/op    │    sec/op     vs base                 │    sec/op     vs base                │
OnceFunc    1.3500n ± 6%   2.7030n ± 1%  +100.22% (p=0.000 n=20)   0.3935n ± 0%  -70.86% (p=0.000 n=20)
OnceValue   1.3155n ± 0%   2.7460n ± 1%  +108.74% (p=0.000 n=20)   0.5478n ± 1%  -58.35% (p=0.000 n=20)

The "Once" column represents the baseline of how code would typically
express these patterns using sync.Once. "Global" binds the closure
returned by OnceFunc/OnceValue to global, which is how I expect these
to be used most of the time. Currently, this defeats some inlining
opportunities, which roughly doubles the cost over sync.Once; however,
it's still *extremely* fast. Finally, "Local" binds the returned
closure to a local variable. This unlocks several levels of inlining
and represents pretty much the best possible case for these APIs, but
is also unlikely to happen in practice. In principle the compiler
could recognize that the global in the "Global" case is initialized in
place and never mutated and do the same optimizations it does in the
"Local" case, but it currently does not.

Fixes #56102

Change-Id: If7355eccd7c8de7288d89a4282ff15ab1469e420
Reviewed-on: https://go-review.googlesource.com/c/go/+/451356
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2023-03-31 20:01:17 +00:00
Russ Cox
a7fd2fab0e doc: add godebug.md, documenting GODEBUG
Document the changes to GODEBUG implemented as
part of proposal #56986.

Fixes #56986.

Change-Id: I23153a123e23820c5b22db4767620e037bbdd083
Reviewed-on: https://go-review.googlesource.com/c/go/+/462202
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2023-03-31 16:05:14 +00:00
Austin Clements
9eba17ff90 runtime: for deep stacks, print both the top 50 and bottom 50 frames
This is relatively easy using the new traceback iterator.

Ancestor tracebacks are now limited to 50 frames. We could keep that
at 100, but the fact that it used 100 before seemed arbitrary and
unnecessary.

Fixes #7181
Updates #54466

Change-Id: If693045881d84848f17e568df275a5105b6f1cb0
Reviewed-on: https://go-review.googlesource.com/c/go/+/475960
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2023-03-21 19:14:14 +00:00
Than McIntosh
cad872f75a doc: start draft Go 1.21 release notes
This initial release notes template is based on previous releases.

For #58645.

Change-Id: I8bae25d6dd9778a69963b8b4903a6dc1c180e15f
Reviewed-on: https://go-review.googlesource.com/c/go/+/470296
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2023-02-22 18:53:00 +00:00
Cuong Manh Le
99bc53f5e8 doc: add clear builtin to spec
Fixes #56351

Change-Id: Ia87bf594553b7d0464b591106840f849571c5f39
Reviewed-on: https://go-review.googlesource.com/c/go/+/467755
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2023-02-20 02:28:50 +00:00
Cuong Manh Le
2baf8ad831 doc: do not use "==" in slice examples
There's no slice comparison in Go.

Change-Id: I5de1766c2adeb56ed12a577a4c46c12b2582b1c8
Reviewed-on: https://go-review.googlesource.com/c/go/+/469015
Reviewed-by: Robert Griesemer <gri@google.com>
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2023-02-19 23:51:51 +00:00
Cuong Manh Le
135c470b22 doc: add missing builtin functions not permitted in statement context
The typechecker already enforces this semantic, but the spec is not
updated when unsafe.{SliceData,String,StringData} were added.

Change-Id: I4ee8c564d5681b2a5fd31ff424a31bdf065d9f3b
Reviewed-on: https://go-review.googlesource.com/c/go/+/467756
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2023-02-16 19:49:55 +00:00
Oleksandr Redko
f63ee8b2c7 doc: fix spec typo
Change-Id: I5e3aca2b8fc78f38c9e2cdc67adf86d57ac85b1c
GitHub-Last-Rev: 0e5ddffe33
GitHub-Pull-Request: golang/go#58353
Reviewed-on: https://go-review.googlesource.com/c/go/+/465615
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2023-02-07 23:37:57 +00:00
Michael Anthony Knyszek
0a27a45896 doc: move Go 1.20 release notes to x/website
Now that the development of the Go 1.20 release is almost done, its
release notes are moved to their eventual long-term home in x/website
in CL 464075. Delete the initial development copy here.

For golang/go#54202.

Change-Id: Ia402d1abd4539fbce415e2a7dffd6709186f08a7
Reviewed-on: https://go-review.googlesource.com/c/go/+/464055
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2023-01-30 21:10:03 +00:00
Russ Cox
aa51c40b1c runtime: replace panic(nil) with panic(new(runtime.PanicNilError))
Long ago we decided that panic(nil) was too unlikely to bother
making a special case for purposes of recover. Unfortunately,
it has turned out not to be a special case. There are many examples
of code in the Go ecosystem where an author has written panic(nil)
because they want to panic and don't care about the panic value.

Using panic(nil) in this case has the unfortunate behavior of
making recover behave as though the goroutine isn't panicking.
As a result, code like:

	func f() {
		defer func() {
			if err := recover(); err != nil {
				log.Fatalf("panicked! %v", err)
			}
		}()
		call1()
		call2()
	}

looks like it guarantees that call2 has been run any time f returns,
but that turns out not to be strictly true. If call1 does panic(nil),
then f returns "successfully", having recovered the panic, but
without calling call2.

Instead you have to write something like:

	func f() {
		done := false
		defer func() {
			if err := recover(); !done {
				log.Fatalf("panicked! %v", err)
			}
		}()
		call1()
		call2()
		done = true
	}

which defeats nearly the whole point of recover. No one does this,
with the result that almost all uses of recover are subtly broken.

One specific broken use along these lines is in net/http, which
recovers from panics in handlers and sends back an HTTP error.
Users discovered in the early days of Go that panic(nil) was a
convenient way to jump out of a handler up to the serving loop
without sending back an HTTP error. This was a bug, not a feature.
Go 1.8 added panic(http.ErrAbortHandler) as a better way to access the feature.
Any lingering code that uses panic(nil) to abort an HTTP handler
without a failure message should be changed to use http.ErrAbortHandler.

Programs that need the old, unintended behavior from net/http
or other packages can set GODEBUG=panicnil=1 to stop the run-time error.

Uses of recover that want to detect panic(nil) in new programs
can check for recover returning a value of type *runtime.PanicNilError.

Because the new GODEBUG is used inside the runtime, we can't
import internal/godebug, so there is some new machinery to
cross-connect those in this CL, to allow a mutable GODEBUG setting.
That won't be necessary if we add any other mutable GODEBUG settings
in the future. The CL also corrects the handling of defaulted GODEBUG
values in the runtime, for #56986.

Fixes #25448.

Change-Id: I2b39c7e83e4f7aa308777dabf2edae54773e03f5
Reviewed-on: https://go-review.googlesource.com/c/go/+/461956
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2023-01-19 22:21:50 +00:00
Joe Tsai
9894ded194 time: revert strict parsing of RFC 3339
CL 444277 fixed Time.UnmarshalText and Time.UnmarshalJSON to properly
unmarshal timestamps according to RFC 3339 instead of according
to Go's bespoke time syntax that is a superset of RFC 3339.

However, this change seems to have broken an AWS S3 unit test
that relies on parsing timestamps with single digit hours.
It is unclear whether S3 emits these timestamps in production or
whether this is simply a testing artifact that has been cargo culted
across many code bases. Either way, disable strict parsing for now
and re-enable later with better GODEBUG support.

Updates #54580

Change-Id: Icced2c7f9a6b2fc06bbd9c7e90f90edce24c2306
Reviewed-on: https://go-review.googlesource.com/c/go/+/462286
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2023-01-18 19:59:26 +00:00
Filippo Valsorda
d74c31f0ba doc/go1.20: update cryptography release notes
Change-Id: I5d6d2bd5cbb246ea514e5adbe936fb31b92904af
Reviewed-on: https://go-review.googlesource.com/c/go/+/459978
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2023-01-17 18:01:38 +00:00
Russ Cox
66689c7d46 doc/go1.20: remove mention of arena goexperiment
The arena goexperiment contains code used inside Google in very
limited use cases that we will maintain, but the discussion on #51317
identified serious problems with the very idea of adding arenas to the
standard library. In particular the concept tends to infect many other
APIs in the name of efficiency, a bit like sync.Pool except more
publicly visible.

It is unclear when, if ever, we will pick up the idea and try to push
it forward into a public API, but it's not going to happen any time
soon, and we don't want users to start depending on it: it's a true
experiment and may be changed or deleted without warning.

The arena text in the release notes makes them seem more official
and supported than they really are, and we've already seen a couple
blog posts based on that erroneous belief. Delete the text to try to
set expectations better.

Change-Id: I4f6e328ac470a9cd410f5f722d0769ef62d5e5ba
Reviewed-on: https://go-review.googlesource.com/c/go/+/462355
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2023-01-17 15:26:07 +00:00
Austin Clements
16cec4e7a0 doc/go1.20: mention build speed improvements
For #49569.
For #54202.

Change-Id: Iac45338bc4e45617e8ac7425076cf4cd0af157a4
Reviewed-on: https://go-review.googlesource.com/c/go/+/461957
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2023-01-13 16:42:47 +00:00
Piers
bae7d772e8 doc/go1.20: fix links to new strings functions
Links under strings package were linking to the bytes versions of the functions.

Change-Id: If6ebe37fede8e417f8683695783aa767bc01e9c7
GitHub-Last-Rev: 8849285122
GitHub-Pull-Request: golang/go#57579
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2023-01-04 21:15:31 +00:00
Alexander Yastrebov
d03231d9ce doc/go1.20: fix http.ResponseController example
Fixes #57162

Change-Id: I190810d702e503822265b12c56db69ec1093233c
GitHub-Last-Rev: e8b259d4b3
GitHub-Pull-Request: golang/go#57385
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2023-01-03 18:53:52 +00:00
Xiao Cui
db36eca33c doc/go1.20: fix typos
Change-Id: Ie2e583cba9e9bec7d642e323e77fb2d9b05dc7bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/459780
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2022-12-29 23:36:05 +00:00
Tobias Klauser
13ed4f42f0 doc/go1.20: fix typo
Change-Id: Ia0ce728ca18eefd835220b2076c4aa8ba00cda6d
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2022-12-22 00:19:49 +00:00
Robert Griesemer
628a1e7d3a doc/go1.20: fix typo
Change-Id: Icddf980e533b86ca955660ad028f5ad04b6aecbe
Reviewed-on: https://go-review.googlesource.com/c/go/+/457916
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2022-12-15 17:45:34 +00:00
Robert Griesemer
357ea85892 spec: fix typo
Fixes #57323.

Change-Id: I77d3d747aa4746bb9a8cca0c0500ff8fa6ae33a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/457915
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2022-12-15 16:18:42 +00:00
Robert Griesemer
ea14d1b6e1 spec: document which recursive arrays and structs are valid/invalid
Fixes #5069.

Change-Id: I4bc0f52a9cd1e64a49846dffeb4be5cbecc29a96
Reviewed-on: https://go-review.googlesource.com/c/go/+/457342
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2022-12-14 22:29:38 +00:00
Heschi Kreinick
0b8add46ce doc/go1.20.html: pre-announce dropping Windows 7, 8, and friends
For #57003, #57004.

Change-Id: Ic1386a0ce83897411fbc68c83a9125af1cc11b54
Reviewed-on: https://go-review.googlesource.com/c/go/+/457695
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2022-12-14 21:01:46 +00:00
Robert Griesemer
5c682f94c6 spec: document illegal recursive type parameter lists
Fixes #40882.

Change-Id: I90f99d75e6d66f857b6ab8789c6d436f85d20993
Reviewed-on: https://go-review.googlesource.com/c/go/+/457515
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2022-12-14 19:13:24 +00:00
Robert Griesemer
bd42aa86d3 spec: describe new semantics for comparable and constraint satisfaction
For #56548.
Fixes #57012.

Change-Id: I44f850522e52b1811025fb31bcef289da8f8089d
Reviewed-on: https://go-review.googlesource.com/c/go/+/457437
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2022-12-14 19:13:10 +00:00
Robert Griesemer
ffefcd360b spec: introduce notion of strict comparability
- Rephrase the notion of "comparability" from a property
  of values (operands) to a property of types and adjust
  dependent prose.
- Introduce the notion of "strict comparability".
- Fix the definitions of comparability for type interfaces
  and type parameters.
- Define the predeclared identifier "comparable" as stricly
  comparable.

These changes address existing problems in the spec as outlined
in the section on "Related spec issues" in issue #56548.

For #56548.

Change-Id: Ibc8c2f36d92857a5134eadc18358624803d3dd21
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2022-12-14 19:12:15 +00:00
Alexander Frolov
6b895d9eaa doc/go1.20: fix typo
Change-Id: Id0319a9cc9acc549022fdcd6b7d71c7343afd245
GitHub-Last-Rev: 2b84d25763
GitHub-Pull-Request: golang/go#57187
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2022-12-12 14:20:13 +00:00
Shengyu Zhang
5dca7ed66f doc/go1.20: fix URL anchor
The URL anchor was invalid. Add the missing "array_or_" part.

Change-Id: Ib27f4d0f21b0148bea8b63ef962ba0ea30166ed3
GitHub-Last-Rev: f8addc6078
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2022-12-12 14:15:22 +00:00
Than McIntosh
e76c87b191 doc: fix typo in 1.20 release notes
Fix typo.

Change-Id: Id3a78ac5d8ea429ba1685889cd1661aaca8572c5
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2022-12-09 10:49:03 +00:00
Zhizhen He
8247b9f17a doc: fix typo
Change-Id: Ie639fe39b83336c0d885cdcb2fddc06f2b06c2dd
GitHub-Last-Rev: b5cc78ad42
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2022-12-08 19:06:14 +00:00