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44641 Commits

Author SHA1 Message Date
Russ Cox
efbe47b162 html/template: add tests from text/template
Copy and adapt tests from text/template, to exercise more of html/template's copy.

Various differences in behavior are flagged with NOTE comments or t.Skip
and documented in #40075. Many of them are probably bugs.
One clarifying test case added to both text/template and html/template.

No changes to the package itself.

Change-Id: Ifefad83d647db846040d24c2741a0244b00ade82
Reviewed-on: https://go-review.googlesource.com/c/go/+/241084
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-07-14 16:54:25 +00:00
Cherry Zhang
5698ec36a8 [dev.link] cmd/link: dump symbol info on crash under -v
If the linker panics, it usually helps dumping all symbols'
information for debugging. Do it under -v.

Change-Id: I66f9e32a0133e763a631f17a218dcdc805c5df2f
Reviewed-on: https://go-review.googlesource.com/c/go/+/242078
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
2020-07-13 21:39:20 +00:00
Jay Conrod
e88ea87e7b cmd/go: include GOMODCACHE in 'go help environment'
Updates #34527
Fixes #40089

Change-Id: Ie9c8573536e5c31e874d755f4d888ffc805b796f
Reviewed-on: https://go-review.googlesource.com/c/go/+/241275
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2020-07-13 17:48:55 +00:00
Cherry Zhang
f3a29d3a34 [dev.link] cmd/link: remove ARM64 special handling of GC data in shared libraries
The special case is no longer needed, didn't actually work, and
we no longer even save this map anywhere (see CL 240621 for more
information).

Change-Id: I19bcf32cace22decf50fd6414d4519cc51cbb0be
Reviewed-on: https://go-review.googlesource.com/c/go/+/241982
Reviewed-by: Austin Clements <austin@google.com>
2020-07-10 20:48:45 +00:00
Cherry Zhang
86f53c2a3c [dev.link] all: merge branch 'master' into dev.link
Change-Id: I644cfc9dfd6e024a0d62bbd226db8639e4a87dc7
2020-07-10 14:54:13 -04:00
Fazlul Shahriar
3a4322627e net: hangup TCP connection after Dial timeout in Plan 9
After Dial timeout, force close the TCP connection by writing "hangup"
to the control file. This unblocks the "connect" command if the
connection is taking too long to establish, and frees up the control
file FD.

Fixes #40118

Change-Id: I1cef8539cd9fe0793e32b49c9d0ef636b4b26e1d
Reviewed-on: https://go-review.googlesource.com/c/go/+/241638
Run-TryBot: David du Colombier <0intro@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David du Colombier <0intro@gmail.com>
2020-07-10 11:32:36 +00:00
Austin Clements
574dac9d97 doc/go1.15: fix TODO about -buildmode=pie
Updates #37419.

Change-Id: If77067eb348de47a4b101325de8a43502383b6d3
Reviewed-on: https://go-review.googlesource.com/c/go/+/241740
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-07-09 20:19:47 +00:00
Norman B. Lancaster
504db53297 net/textproto: correct documentation of empty line handling
Fixes #32493

Change-Id: I9c93791c4cc5c0c14556802733066407de3181ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/185542
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-07-09 20:09:55 +00:00
Jean de Klerk
72735e7e05 doc/go1.15: add line for testing streaming change
Updates #37419.
Updates #38458.
Updates #24929.

Change-Id: I793bb20fa9db4432fc3a5b69956b7108e4695081
Reviewed-on: https://go-review.googlesource.com/c/go/+/241660
Run-TryBot: Jean de Klerk <deklerk@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2020-07-09 16:26:07 +00:00
Than McIntosh
076dc2111b [dev.link] cmd/compile: make compiler-generated ppc64 TOC symbols static
Set the AttrStatic flag on compiler-emitted TOC symbols for ppc64; these
symbols don't need to go into the final symbol table in Go binaries.
This fixes a buglet introduced by CL 240539 that was causing failures
on the aix builder.

Change-Id: If8b63bcf6d2791f1ec5a0c371d2d11e806202fd2
Reviewed-on: https://go-review.googlesource.com/c/go/+/241637
Run-TryBot: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-07-08 23:51:08 +00:00
Filippo Valsorda
4f2a2d7e26 crypto/x509/internal/macos: rename package to lowercase
Also add a test to lock in this policy.

Fixes #40065

Change-Id: Iedc4586f2f5598046d84132a8f3bba8f2e93ddc2
Reviewed-on: https://go-review.googlesource.com/c/go/+/241274
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-07-08 22:16:24 +00:00
Ian Lance Taylor
9699086043 runtime: mark OpenBSD raise function nosplit
It is called by the signal handler before switching to gsignal
(sigtrampgo -> sigfwdgo -> dieFromSignal -> raise)
which means that it must not split the stack.

All other instances of raise are already marked nosplit.

Fixes #40076

Change-Id: I4794491331af48c46d0d8ebc82d34c6483f0e6cd
Reviewed-on: https://go-review.googlesource.com/c/go/+/241121
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-07-08 19:50:20 +00:00
Joe Tsai
0844ff8eef os: fix regression with handling of nil *File
Use of a nil *File as an argument should not result in a panic,
but result in the ErrInvalid error being returned.
Fix the copy_file_range implementation to preserve this semantic.

Fixes #40115

Change-Id: Iad5ac39664a3efb7964cf55685be636940a8db13
Reviewed-on: https://go-review.googlesource.com/c/go/+/241417
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-07-08 18:29:38 +00:00
Katie Hockman
4b09c8ad6f crypto: fix PKCS space in docs
Change-Id: Iee53acb963a889410f8c6daaa9a7841f1b12c6fb
Reviewed-on: https://go-review.googlesource.com/c/go/+/241497
Run-TryBot: Katie Hockman <katie@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
2020-07-08 17:21:49 +00:00
Than McIntosh
8aa036e913 [dev.link] cmd/link: skip symtab entries for selected file local symbols
Don't emit symbol table entries for compiler-generated file-local
symbols (this category includes .stmp_* temporaries and *.stkobj
symbols). Note that user-written static symbols within assembler
sources will still be added to the symbol table. Apply the same test
when emitting DWARF for global variables.

Change-Id: I4db77a2750a0b575e051dfea895c4742cf6709a6
Reviewed-on: https://go-review.googlesource.com/c/go/+/240539
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-07-08 16:04:12 +00:00
Than McIntosh
0434d40934 [dev.link] cmd/compile: mark stmp and stkobj symbols as static
Mark compiler-generated ".stmp_%d" and "<fn>.stkobj" symbols as
AttrStatic, so as to tell the linker that they do not need to be
inserted into its name lookup tables.

Change-Id: I59ffd11659b2c54c2d0ad41275d05c3f919e3b88
Reviewed-on: https://go-review.googlesource.com/c/go/+/240497
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-07-08 16:04:06 +00:00
Hana (Hyang-Ah) Kim
2336d127e1 doc/editors.html: update VS Code Go extension url
Change-Id: I7aa73861de053db6b424f113733de9caba19145b
Reviewed-on: https://go-review.googlesource.com/c/go/+/241086
Reviewed-by: Andrew Bonventre <andybons@golang.org>
2020-07-08 13:59:06 +00:00
Kush Patel
ca978a5ca9 A+C: add Kush Patel (corporate CLA for Hootsuite Inc)
I'm from Hootsuite. We're a Canadian tech company who provides products
and services to businesses, organizations and individuals to really help
them succeed on social. We have leveraged Go in our stack for the past
4+ years. I am super happy to give back to Go on behalf of Hootsuite
through a small contribution to pkgsite (with a few more in the works).
We love this project and we love open source :)

Hopefully we can give back more in the future!
Kush

Change-Id: Id534a41d78e17e1fa48a8ddecd1ca110cf812388
GitHub-Last-Rev: 297b8b06e7
GitHub-Pull-Request: golang/go#40088
Reviewed-on: https://go-review.googlesource.com/c/go/+/241218
Reviewed-by: Julie Qiu <julie@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-07-08 00:10:44 +00:00
Filippo Valsorda
cd10f5f632 crypto/tls: relax the docs of InsecureSkipVerify
Fixes #39074

Change-Id: I72ec95f4b190253bb82d52a03a769b0399170b93
Reviewed-on: https://go-review.googlesource.com/c/go/+/239746
Reviewed-by: Katie Hockman <katie@golang.org>
2020-07-07 23:55:02 +00:00
Fazlul Shahriar
c769a47291 net: correct address when listening on IPv4zero tcp4/udp4 on Plan 9
Since Plan 9 doesn't allow us to listen on 0.0.0.0, the Listener
address that's read in from /net is the IPv6 address ::. Convert
this address to 0.0.0.0 when the network is tcp4 or udp4.

Fixes #40045

Change-Id: Icfb69b823e5b80603742d23c3762a812996fe43f
Reviewed-on: https://go-review.googlesource.com/c/go/+/240918
Run-TryBot: David du Colombier <0intro@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David du Colombier <0intro@gmail.com>
2020-07-07 23:03:29 +00:00
Filippo Valsorda
12debf4a65 crypto/x509/pkix: print non-standard parsed Names at the end
This doesn't change how ExtraNames are printed, so as not to cause
unnecessary churn of current outputs. Switched the ExtraNames check to a
nil check as we are checking for just-parsed values.

Fixes #39924
Fixes #39873

Change-Id: Ifa07cfc1a057d73643710a774ef8a154222db187
Reviewed-on: https://go-review.googlesource.com/c/go/+/240543
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-07-07 17:51:38 +00:00
Filippo Valsorda
6ba3e6a8c7 doc/go1.15: add html/template and text/template docs
Updates #37419

Change-Id: I23abfeabc6be704aad9da2649bbbe7c8e237dfab
Reviewed-on: https://go-review.googlesource.com/c/go/+/240546
Reviewed-by: Carlos Amedee <carlos@golang.org>
2020-07-07 16:41:47 +00:00
Russ Cox
3b6b86d1fe go/build: rewrite TestDependencies to be cleaner, more correct
TestDependencies defines the dependency policy
(what can depend on what) for the standard library.

The standard library has outgrown the idea of writing
the policy as a plain map literal. Also, the checker was
ignoring vendored packages, which makes it miss real
problems.

This commit adds a little language for describing
partial orders and rewrites the policy in that language.

It also changes the checker to look inside vendored
packages and adds those to the policy as well.

This turned up one important problem: net is depending
on fmt, unicode via golang.org/x/net/dns/dnsmessage,
filed as #40070.

This is a test-only change, so it should be appropriate
even for the release freeze, especially since it identified
a real bug.

Change-Id: I9b79f30761f167b8587204c959baa973583e39f2
Reviewed-on: https://go-review.googlesource.com/c/go/+/241078
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-07-07 16:15:30 +00:00
Russ Cox
18d042e08e all: go get golang.org/x/net@ab3426394381
Pull in dns/dnsmessage fix to drop fmt dependency.
Also pulled in minor bug fix in x/crypto (dep of net).

Change-Id: I0f618e81a24ac24a5adae00af34b728b243dfdbb
Reviewed-on: https://go-review.googlesource.com/c/go/+/241257
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2020-07-07 16:14:42 +00:00
Carlos Amedee
bff372793a doc/go1.15: update Go 1.15 release notes using relnote
The additions were generated using golang.org/x/build/cmd/relnote.

Updates #37419

Change-Id: I99e934377e4bb511c44908039ad6d3bfd3ee35ce
Reviewed-on: https://go-review.googlesource.com/c/go/+/241065
Run-TryBot: Carlos Amedee <carlos@golang.org>
Reviewed-by: Alexander Rakoczy <alex@golang.org>
Reviewed-by: Andrew Bonventre <andybons@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-07-07 15:08:20 +00:00
Cherry Zhang
59a702aa6a [dev.link] cmd/link: emit Mach-O relocations in mmap
Following CL 240399 and CL 240400, do the same for Mach-O.

Linking cmd/compile with external linking,

name         old time/op    new time/op    delta
Asmb2_GC       32.7ms ± 2%    13.5ms ± 6%   -58.56%  (p=0.008 n=5+5)

name         old alloc/op   new alloc/op   delta
Asmb2_GC       16.5MB ± 0%     6.4MB ± 0%   -61.15%  (p=0.008 n=5+5)

Change-Id: I0fd7019d8713d1940e5fbbce4ee8eebd926451a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/241178
Reviewed-by: Jeremy Faller <jeremy@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-07-07 14:44:43 +00:00
Cherry Zhang
041d8850a1 [dev.link] cmd/link: run more tests in parallel
Change-Id: I4062fd89f234b4ca5386b74584e1363c05e82e84
Reviewed-on: https://go-review.googlesource.com/c/go/+/241177
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-07-07 14:44:35 +00:00
Than McIntosh
130ede0d9e [dev.link] cmd/link: remove some unneeded code from writeBlock()
The loader writeBlock() function has code that tries to skip the
initial portion of the input symbols list depending on the address of
the section being written-- this code is dead (skipping is never
triggered) due to similar skipping in the callers; remove this
preamble.

Change-Id: I9769694a3194faf73ebebbbc10ceba4928c3087c
Reviewed-on: https://go-review.googlesource.com/c/go/+/241067
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
2020-07-07 13:07:46 +00:00
Russ Cox
6b344170db path/filepath: add explicit comment marking elided errors
The errors on these lines are meant to be discarded.
Add a comment to make that extra clear.

Change-Id: I38f72af6dfbb0e86677087baf47780b3cc6e7d40
Reviewed-on: https://go-review.googlesource.com/c/go/+/241083
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-07-07 03:43:31 +00:00
Than McIntosh
1e9381207e [dev.link] cmd/link: better naming for Loader container/subsym methods, part 2 of 2
Introduce a new loader method "SetCarrierSym", to be used when
establishing container/containee symbol relationships for symbol
bucketing in the symtab phase.

This new method is intended to be employed in situations where you
have a series of related symbols will be represented by a single
carrier symbol as a combined entity. The pattern here is that the
sub-symbols contain content but will be anonymous from a symbol table
perspective; the carrier symbol has no content itself but will appear
in the symbol table. Examples of carrier symbols that follow this
model are "runtime.itablink" and "runtime.typelink".

Change-Id: I1a3391a71062c7c740cb108b3fa210b7f69b81ed
Reviewed-on: https://go-review.googlesource.com/c/go/+/240509
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
2020-07-06 22:56:35 +00:00
Than McIntosh
3c3cc19564 [dev.link] cmd/link: better naming for Loader container/subsym methods, part 1 of 2
Introduce a new loader method "AddInteriorSym" to be used when
establishing container/containee symbol relationships for host object
sub-symbols and GOT/dynamic sub-symbols.

Interior symbols are employed in situations where you have a
"container" or "payload" symbol that has content, and then a series of
"interior" sub-symbols that point into a portion of the container
symbol's content. Each interior symbol will typically have a useful
name / size / value, but no content of its own. From a symbol table
perspective the container symbol is anonymous, but the interior
symbols are added to the output symbol table.

Change-Id: I919ed5dbbfe2ef2c9a76214f7ea9b384a1be6297
Reviewed-on: https://go-review.googlesource.com/c/go/+/240508
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
2020-07-06 22:56:23 +00:00
Ian Lance Taylor
6a167c7397 cmd/go: display test binary output if invoked with -help
Fixes #39997

Change-Id: I87ea616bac809b96fcd40f3bbdbbf1c603b9d00e
Reviewed-on: https://go-review.googlesource.com/c/go/+/240878
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2020-07-06 21:47:57 +00:00
Cherry Zhang
20afbe86be cmd/oldlink: port bug fixes to old linker
This CL ports CL 234105 and CL 240621 to the old linker, which
fix critical bugs (runtime crashes).

Updates #39049.
Updates #39927.

Change-Id: I47afc84349119e320d2e60d64b7188a410835d2b
Reviewed-on: https://go-review.googlesource.com/c/go/+/241087
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
2020-07-06 20:17:51 +00:00
Cherry Zhang
8c46cb1bf5 [dev.link] cmd/link: write ELF relocations in mmap on all architectures
In CL 240399 we changed to precompute the size for ELF relocation
records and use mmap to write them, but we left architectures
where elfreloc1 write non-fixed number of bytes. This CL handles
those architectures. When a Go relocation will turn into multiple
ELF relocations, in relocsym we account this difference and add
it to the size calculation. So when emitting ELF relocations, we
know the number of ELF relocations to be emitted.

Change-Id: I6732ab674b442f4618405e5412a77f6e4a3315d7
Reviewed-on: https://go-review.googlesource.com/c/go/+/241079
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
2020-07-06 19:58:23 +00:00
Russ Cox
fcf1cb2cf5 go/build: remove use of package log
package log does not belong here,
even for an impossible condition.

Change-Id: I6180a4f7766a8e5759db4f33d03703d0b678d0b4
Reviewed-on: https://go-review.googlesource.com/c/go/+/241077
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-07-06 17:27:01 +00:00
Cherry Zhang
36939aef77 [dev.link] cmd/link: parallelize ELF relocation writing
Now that we write ELF relocation records in mapped memory with
known sizes and offsets, we can write them in parallel.

Further speed up Asmb2 pass. Linking cmd/compile with external
linking,

Asmb2        141ms ± 4%      97ms ± 5%  -30.98%  (p=0.000 n=10+9)

Change-Id: I52c2b9230e90ed4421c21d7ef13a4f1e996f6054
Reviewed-on: https://go-review.googlesource.com/c/go/+/240400
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-07-05 23:57:04 +00:00
Cherry Zhang
987ce93824 [dev.link] cmd/link: emit ELF relocations in mmap
Currently, ELF relocations are generated sequentially in the heap
and flushed to output file periodically. In fact, in some cases,
the output size of the relocation records can be easily computed,
as a relocation entry has fixed size. We only need to count the
number of relocation records to compute the size.

Once the size is computed, we can mmap the output with the proper
size, and directly write relocation records in the mapped memory.
It also opens the possibility of writing relocations in parallel
(not done in this CL).

Note: on some architectures, a Go relocation may turn into
multiple ELF relocations, which makes size calculation harder.
This CL does not handle those cases, and it still writes
sequentially in the heap there.

Linking cmd/compile with external linking,

name          old time/op    new time/op    delta
Asmb2            190ms ± 2%     141ms ± 4%  -25.74%  (p=0.000 n=10+10)

name          old alloc/op   new alloc/op   delta
Asmb2_GC        66.8MB ± 0%     8.2MB ± 0%  -87.79%  (p=0.008 n=5+5)

name          old live-B     new live-B     delta
Asmb2_GC         66.9M ± 0%     55.2M ± 0%  -17.58%  (p=0.008 n=5+5)

Change-Id: If7056bbe909dc90033eef6b9c4891fcca310602c
Reviewed-on: https://go-review.googlesource.com/c/go/+/240399
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-07-05 23:56:19 +00:00
Alberto Donizetti
87db6d90c9 doc/go1.15: fix wording in a few places
Change-Id: I1dc6871bdab7f3048eacd6738fdcfa64b8700c8a
Reviewed-on: https://go-review.googlesource.com/c/go/+/240998
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-07-05 21:39:36 +00:00
Daniel
dd150176c3 crypto/tls: create certs w/o KeyEncipherment KU for non-RSA keys in generate_cert.go
Summary

The crypto/tls/generate_cert.go utility should only set the template
x509.Certificate's KeyUsage field to a value with the
x509.KeyUsageKeyEncipherment bits set when the certificate subject
public key is an RSA public key, not an ECDSA or ED25519 public key.

Background

RFC 5480 describes the usage of ECDSA elliptic curve subject keys with
X.509. Unfortunately while Section 3 "Key Usages Bits" indicates which
key usage bits MAY be used with a certificate that indicates
id-ecPublicKey in the SubjectPublicKeyInfo field it doesn't provide
guidance on which usages should *not* be included (e.g. the
keyEncipherment bit, which is particular to RSA key exchange). The same
problem is present in RFC 8410 Section 5 describing Key Usage Bits for
ED25519 elliptic curve subject keys.

There's an update to RFC 5480 in last call stage within the IETF LAMPS
WG, draft-ietf-lamps-5480-ku-clarifications-00. This update is meant
to clarify the allowed Key Usages extension values for certificates with
ECDSA subject public keys by adding:

> If the keyUsage extension is present in a certificate that indicates
> id-ecPublicKey as algorithm of AlgorithmIdentifier [RFC2986] in
> SubjectPublicKeyInfo, then following values MUST NOT be present:
>
> keyEncipherment; and
> dataEncipherment.

I don't believe there is an update for RFC 8410 in the works but I
suspect it will be clarified similarly in the future.

This commit updates generate_cert.go to ensure when the certificate
public key is ECDSA or ED25519 the generated certificate has the
x509.Certificate.KeyUsage field set to a value that doesn't include KUs
specific to RSA. For ECDSA keys this will adhere to the updated RFC 5480
language.

Fixes #36499

Change-Id: Ib1b0757c039b7fe97fc6d1e826fe6b88856c1964
GitHub-Last-Rev: a8f34fb33d
GitHub-Pull-Request: golang/go#36500
Reviewed-on: https://go-review.googlesource.com/c/go/+/214337
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-07-03 03:31:29 +00:00
Daniel Martí
5de90d33c8 Revert "encoding/json: don't reuse slice elements when decoding"
This reverts https://golang.org/cl/191783.

Reason for revert: Broke too many programs which depended on the previous
behavior, even when it was the opposite of what the documentation said.

We can attempt to fix the original issue again for 1.16, while keeping
those programs in mind.

Fixes #39427.

Change-Id: I7a7f24b2a594c597ef625aeff04fff29aaa88fc6
Reviewed-on: https://go-review.googlesource.com/c/go/+/240657
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-07-02 22:08:11 +00:00
Cherry Zhang
a4ba411b19 cmd/link: skip fallocate test if not supported, and adjust allocation size on darwin
On Linux, the linker uses fallocate to preallocate the output
file storage. The underlying file system may not support
fallocate, causing the test to fail. Skip the test in this case.

On darwin, apparently F_PREALLOCATE allocates from the end of the
allocation instead of the logical end of the file. Adjust the
size calculation.

Fixes #39905.

Change-Id: I01e676737fd2619ebbdba05c7cf7f424ec27de35
Reviewed-on: https://go-review.googlesource.com/c/go/+/240618
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-07-01 15:29:29 +00:00
Cherry Zhang
7799756a50 cmd/link: fix GC data reading from shared library (attempt 2)
When linking against a Go shared library, when a global variable
in the main module has a type defined in the shared library, the
linker needs to pull the GC data from the shared library to build
the GC program for the global variable. Currently, this fails
silently, as the shared library file is closed too early and the
read failed (with no error check), causing a zero GC map emitted
for the variable, which in turn causes the runtime to treat the
variable as pointerless.

For now, fix this by keeping the file open. In the future we may
want to use mmap to read from the shared library instead.

Also add error checking. And fix a (mostly harmless) mistake in
size caluculation.

Also remove an erroneous condition for ARM64. ARM64 used to have
a special case to get the addend from the relocation on the
gcdata field. That was removed, but the new code accidentally
returned 0 unconditionally. It's no longer necessary to have any
special case, since the addend is now applied directly to the
gcdata field on ARM64, like on all the other platforms.

Fixes #39927.

This is the second attempt of CL 240462. And this reverts
CL 240616.

Change-Id: I01c82422b9f67e872d833336885935bc509bc91b
Reviewed-on: https://go-review.googlesource.com/c/go/+/240621
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-07-01 14:41:56 +00:00
Cherry Zhang
d7553d9af9 cmd/link: mark special symbols reachable
The special symbols are linker-created symbols for special
purposes, therefore reachable (otherwise the linker won't create
them). Mark them so, so they get converted to sym.Symbols when we
convert to old symbol representation.

In particular, the failure for building shared library on PPC64
is due to .TOC. symbol not being converted to sym.Symbol, but
referenced in addmoduledata.

Change-Id: Iaf5d145ffa5d15122e86a6e6983514e56dd5d456
Reviewed-on: https://go-review.googlesource.com/c/go/+/240620
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-07-01 14:41:27 +00:00
Tobias Klauser
84152d5769 doc: add riscv64 to ports list
Mention support for the 64-bit RISC-V instruction set (GOARCH=riscv64)
in the "Installing Go from source" document. Also sort the list of
supported instruction sets alphabetically.

Updates #27532

Change-Id: I07a443044a41a803853978dd7f7446de89ecceb5
Reviewed-on: https://go-review.googlesource.com/c/go/+/240377
Reviewed-by: Alberto Donizetti <alb.donizetti@gmail.com>
2020-07-01 09:07:18 +00:00
Cherry Zhang
96e8366437 Revert "cmd/link: fix GC data reading from shared library"
This reverts CL 240462.

Reason for revert: test fails on PPC64LE.

Updates #39927.

Change-Id: I4f14fd0c36e604a80ae9f2f86d1e643e28945e93
Reviewed-on: https://go-review.googlesource.com/c/go/+/240616
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-06-30 20:14:48 +00:00
Cherry Zhang
5779bb4e92 cmd/link: fix GC data reading from shared library
When linking against a Go shared library, when a global variable
in the main module has a type defined in the shared library, the
linker needs to pull the GC data from the shared library to build
the GC program for the global variable. Currently, this fails
silently, as the shared library file is closed too early and the
read failed (with no error check), causing a zero GC map emitted
for the variable, which in turn causes the runtime to treat the
variable as pointerless.

For now, fix this by keeping the file open. In the future we may
want to use mmap to read from the shared library instead.

Also add error checking. And fix a (mostly harmless) mistake in
size caluculation.

Also remove an erroneous condition for ARM64. ARM64 used to have
a special case to get the addend from the relocation on the
gcdata field. That was removed, but the new code accidentally
returned 0 unconditionally. It's no longer necessary to have any
special case, since the addend is now applied directly to the
gcdata field on ARM64, like on all the other platforms.

Fixes #39927.

Change-Id: Iecd32315b326c7059587fdc190e2fa99426e497e
Reviewed-on: https://go-review.googlesource.com/c/go/+/240462
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2020-06-30 18:40:39 +00:00
Roland Shoemaker
bf061af1d0 doc/go1.15: add encoding/asn1 note about minimal encoding
Also fix missing <code> tags in the other encoding/asn1 note.

Updates #37419

Change-Id: Ic0e9131016b44ed864629aa8d0a7fddb57146d21
Reviewed-on: https://go-review.googlesource.com/c/go/+/240518
Reviewed-by: Filippo Valsorda <filippo@golang.org>
2020-06-30 17:24:22 +00:00
Cherry Zhang
364d320504 [dev.link] cmd/link: stop Seek file in munmap
If mmap is used, we don't do file I/O anymore, so no need to Seek
in the file either.

Change-Id: Ic8350eb66404398420df18560f6a7acbb3fcf7e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/240398
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-06-30 15:55:56 +00:00
Cherry Zhang
b473a1f8da [dev.link] cmd/link: read symbol type only when necessary in elfreloc1
Slightly speeds up Asmb2.

Linking cmd/compile with external linking:
Asmb2         190ms ± 2%     182ms ± 2%  -4.14%  (p=0.000 n=10+9)

Change-Id: I55511d0e7b0511b60f8d02390076f8566bc7d135
Reviewed-on: https://go-review.googlesource.com/c/go/+/240397
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-06-30 15:55:36 +00:00
Fazlul Shahriar
4b28f5ded3 net: fix TestDialerLocalAddr on Plan 9
We cannot use "0.0.0.0" (IPv4) or "::" (IPv6) for local address, so
don't use those addresses in the control message. Alternatively, we
could've used "*" instead.

Fixes #39931

Change-Id: Ib2dcbb1a0c648296c3ecaddbe938053a569b1f1b
Reviewed-on: https://go-review.googlesource.com/c/go/+/240464
Run-TryBot: David du Colombier <0intro@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David du Colombier <0intro@gmail.com>
2020-06-30 13:18:16 +00:00