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Commit Graph

45052 Commits

Author SHA1 Message Date
surechen
bd6dfe9a3e math/big: add a comment for SetMantExp
Change-Id: I9ff5d1767cf70648c2251268e5e815944a7cb371
Reviewed-on: https://go-review.googlesource.com/c/go/+/233737
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2020-08-28 16:25:32 +00:00
Santiago De la Cruz
3b6c812f3d doc: add linux/riscv64 valid combination
Mention valid combination GOOS=linux and GOARCH=riscv64
in the "Installing Go from source" document.

Updates #27532

Change-Id: I8c1406087132f5c82a2eee5dbcda95d53c64d263
GitHub-Last-Rev: ee74ff9517
GitHub-Pull-Request: golang/go#41063
Reviewed-on: https://go-review.googlesource.com/c/go/+/250997
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
2020-08-28 08:12:25 +00:00
Bryan C. Mills
18ea6f597c testing: restore os.Exit(0) after every call to (*M).Run
cmd/go.TestScript/test_main_twice demonstrates a program that invokes
(*M).Run twice in a row. If we only restore os.Exit(0) in m.afterOnce,
we will fail to restore it after the second run and fail the test
process despite both runs passing.

Updates #29062
Updates #23129

Change-Id: Id22ec68f1708e4583c8dda14a8ba0efae7178b85
Reviewed-on: https://go-review.googlesource.com/c/go/+/251262
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-28 02:46:19 +00:00
Keith Randall
26ad27bb02 Revert "cmd/compile,cmd/asm: simplify recording of branch targets"
This reverts CL 243318.

Reason for revert: Seems to be crashing some builders.

Change-Id: I2ffc59bc5535be60b884b281c8d0eff4647dc756
Reviewed-on: https://go-review.googlesource.com/c/go/+/251169
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-08-28 02:10:13 +00:00
Keith Randall
42fd1306ce cmd/compile: clean up equality generation
We're using sort.SliceStable, so no need to keep track of indexes as well.

Use a more robust test for whether a node is a call.

Add a test that we're actually reordering comparisons. This test fails
without the alg.go changes in this CL because eqstring uses OCALLFUNC
instead of OCALL for its data comparisons.

Update #8606

Change-Id: Ieeec33434c72e3aa328deb11cc415cfda05632e2
Reviewed-on: https://go-review.googlesource.com/c/go/+/237921
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-08-27 23:25:58 +00:00
Ian Lance Taylor
4f76fe8675 cmd/go, testing, os: fail test that calls os.Exit(0)
This catches cases where a test calls code that calls os.Exit(0),
thereby skipping all subsequent tests.

Fixes #29062

Change-Id: If9478972f40189e27623557e7141469ca4234d89
Reviewed-on: https://go-review.googlesource.com/c/go/+/250977
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-08-27 23:19:15 +00:00
Keith Randall
cdc635547f cmd/compile: invalidate zero-use values during rewrite
This helps remove uses that aren't needed any more.
That in turn helps other rules with Uses==1 conditions fire.

Update #39918

Change-Id: I68635b675472f1d59e59604e4d34b949a0016533
Reviewed-on: https://go-review.googlesource.com/c/go/+/249463
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2020-08-27 22:56:29 +00:00
Keith Randall
8247da3662 cmd/compile,cmd/asm: simplify recording of branch targets
We currently use two fields to store the targets of branches.
Some phases use p.To.Val, some use p.Pcond. Rewrite so that
every branch instruction uses p.To.Val.
p.From.Val is also used in rare instances.
Introduce a Pool link for use by arm/arm64, instead of
repurposing Pcond.

This is a cleanup CL in preparation for some stack frame CLs.

Change-Id: I9055bf0a1d986aff421e47951a1dedc301c846f8
Reviewed-on: https://go-review.googlesource.com/c/go/+/243318
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-08-27 22:35:45 +00:00
Keith Randall
5c2c6d3fbf runtime: framepointers are no longer an experiment - hard code them
I think they are no longer experimental status. Might as well promote
them to permanent.

Change-Id: Id1259601b3dd2061dd60df86ee48080bfb575d2f
Reviewed-on: https://go-review.googlesource.com/c/go/+/249857
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
2020-08-27 21:15:47 +00:00
Benjamin Barenblat
29634436fd cmd/cgo: ensure GCC does not use ANSI escape sequences in errors
cgo parses GCC’s error messages to classify C identifiers referenced
from Go programs (are they integer constants? type names?). If GCC tries
to colorize its errors, cgo can’t figure out what GCC is saying. GCC
avoids escape sequences in this scenario by default, but the default
behavior can be overridden in at least two places:

  - The user can set `CGO_COPTS=-fdiagnostics-color`.

  - Whoever compiled GCC can configure GCC itself to always colorize
    output.

The most reliable way to ensure that GCC doesn’t colorize output is to
append `-fdiagnostics-color=never` to the GCC command line; do so.

Fixes #40415

Change-Id: Id4bdf8d92fac8b038340b4264f726e8fe38875b4
Reviewed-on: https://go-review.googlesource.com/c/go/+/248398
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-08-27 21:13:46 +00:00
Paul E. Murphy
7615b20d06 cmd/compile: generate subfic on ppc64
This merges an lis + subf into subfic, and for 32b constants
lwa + subf into oris + ori + subf.

The carry bit is no longer used in code generation, therefore
I think we can clobber it as needed.  Note, lowered borrow/carry
arithmetic is self-contained and thus is not affected.

A few extra rules are added to ensure early transformations to
SUBFCconst don't trip up earlier rules, fold constant operations,
or otherwise simplify lowering.  Likewise, tests are added to
ensure all rules are hit.  Generic constant folding catches
trivial cases, however some lowering rules insert arithmetic
which can introduce new opportunities (e.g BitLen or Slicemask).

I couldn't find a specific benchmark to demonstrate noteworthy
improvements, but this is generating subfic in many of the default
bent test binaries, so we are at least saving a little code space.

Change-Id: Iad7c6e5767eaa9dc24dc1c989bd1c8cfe1982012
Reviewed-on: https://go-review.googlesource.com/c/go/+/249461
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Carlos Eduardo Seo <cseo@linux.vnet.ibm.com>
2020-08-27 20:10:15 +00:00
Michael Pratt
2013f70256 runtime: add lock partial order edge (fin -> wbufSpans)
runfinq may have write barriers, thus it may need to take wbufSpans on
any write.

Fixes #41021

Change-Id: Ib69e20994b5d7d1526ad53d6ddb5e2e83bf2ed00
Reviewed-on: https://go-review.googlesource.com/c/go/+/250464
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
2020-08-27 19:42:42 +00:00
Bryan C. Mills
a98fe2632c cmd/go/internal/modload: address issues missed in CL 244774
For #36460

Change-Id: I5e9a42d64e36679b881e96145833e66cf77b98a5
Reviewed-on: https://go-review.googlesource.com/c/go/+/250338
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2020-08-27 19:38:43 +00:00
Rob Findley
234e37bcda go/types: remove need to enumerate fixedbugs test files
This is a port of CL 244628, updated to move some existing regression
tests into the fixedbugs directory, and to use subtests. Also,
'TestFixed' is renamed to 'TestFixedBugs'.

Change-Id: I43aac3f75f2bd850567d08e8b008d91aeb717064
Reviewed-on: https://go-review.googlesource.com/c/go/+/247904
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2020-08-27 18:34:42 +00:00
Rob Findley
ac2a1f8796 go/types: clean up test support code and remove global variables
This is a straightforward port of CL 244627.

Change-Id: Ide980957430b35e22a6e22818b0ce9de410988af
Reviewed-on: https://go-review.googlesource.com/c/go/+/247902
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2020-08-27 18:33:37 +00:00
Bryan C. Mills
c00b708169 cmd/go/internal/modfetch: do not use mangled version strings to construct module.VersionErrors
Better still would be to avoid passing around module.Version instances
with invalid Version strings in the first place, so that any time we
see a module.Version we know that it is actually a version of a module
(and not a structurally-similar datum with something else tacked on to
one of the fields). But that's a bigger cleanup for which I don't
currently have enough bandwidth.

Fixes #41060

Change-Id: I32fba5619105cbf67dd03691064c82b8ebb3ce18
Reviewed-on: https://go-review.googlesource.com/c/go/+/250951
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
2020-08-27 18:28:53 +00:00
Rob Findley
3b20d484fb go/types: fix missing Importer for TestBenchmark
TestBenchmark is broken due to lack of a Config.Importer, but
unfortunately fails silently due to an unchecked error.

Fix the importer and check the error. Also improve the output to include
allocation stats.

Finally, don't run TestBenchmark on go/types by default. If the
benchmark is being used during a refactoring of go/types itself, results
for go/types will not be comparable.

Change-Id: Ib6bdb6807403b3ec99762f535e2496c94bd9b6e0
Reviewed-on: https://go-review.googlesource.com/c/go/+/249517
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
2020-08-27 17:57:10 +00:00
Michael Munday
17ae587383 cmd/compile: use addressing modes pass on s390x
Add s390x support to the addressing modes pass. This significantly
reduces the number of rules we need to have to handle indexed
addressing modes on s390x.

There are some changes introduced with the new approach. Notably
pointer calculations of the form '(ADD x (ADDconst y [c]))' won't
get fully merged into address fields right now, the constant offset
will remain separate. That is a relatively minor issue though.

file      before    after     Δ       %
addr2line 4120904   4120960   +56     +0.001%
api       4944005   4948765   +4760   +0.096%
asm       4977431   4984335   +6904   +0.139%
buildid   2683760   2683504   -256    -0.010%
cgo       4557976   4558408   +432    +0.009%
compile   19103577  18916634  -186943 -0.979%
cover     4883694   4885054   +1360   +0.028%
dist      3545177   3553689   +8512   +0.240%
doc       3921766   3921518   -248    -0.006%
fix       3295254   3302182   +6928   +0.210%
link      6539222   6540286   +1064   +0.016%
nm        4105085   4107757   +2672   +0.065%
objdump   4546015   4545439   -576    -0.013%
pack      2416661   2415485   -1176   -0.049%
pprof     13267433  13265489  -1944   -0.015%
test2json 2762180   2761996   -184    -0.007%
trace     10145090  10135626  -9464   -0.093%
vet       6772946   6771738   -1208   -0.018%
total     106588176 106418865 -169311 -0.159%

Fixes #37891.

Change-Id: If60d51f31eb2806b011432a6519951b8668cb42f
Reviewed-on: https://go-review.googlesource.com/c/go/+/250958
Run-TryBot: Michael Munday <mike.munday@ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2020-08-27 17:56:04 +00:00
Rob Findley
73a5c37241 go/types: add untyped test cases for AssignableTo API
The AssignableTo API is specifically for non-constant values, but is
currently called by gopls for constant completions. Add a test to ensure
that we handle this edge case correctly.

Change-Id: I83115cbca2443a783df1c3090b5741260dffb78e
Reviewed-on: https://go-review.googlesource.com/c/go/+/250258
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2020-08-27 16:05:57 +00:00
Rob Findley
346efc2850 go/types: better error when converting untyped values in assignments
The error returned by convertUntyped is 'cannot convert _ to _', which
can be misleading in contexts where an explicit conversion would be
allowed.

Arguably the error message from convertUntyped should just be 'cannot
use _ as _', as 'convert' has an explicit meaning within the spec.
Making that change caused a large number of test failures, so for now we
just fix this for assignments by interpreting the error.

For #22070

Change-Id: I4eed6f39d1a991e8df7e035ec301d28a05150eb5
Reviewed-on: https://go-review.googlesource.com/c/go/+/242083
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2020-08-27 16:05:08 +00:00
Ian Lance Taylor
3e636ab9ad net/mail: return error on empty address list
This restores the handling accidentally changed in CL 217377.

Fixes #40803
For #36959

Change-Id: If77fbc0c2a1dde4799f760affdfb8dde9bcaf458
Reviewed-on: https://go-review.googlesource.com/c/go/+/248598
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Jeremy Fishman <jfishman@cloudflare.com>
2020-08-27 14:30:30 +00:00
Paul E. Murphy
2aba467933 cmd/compile: remove unused carry related ssa ops in ppc64
The intermediate SSA opcodes* are no longer generated during the
lowering pass.  The shifting rules have been improved using ISEL.
Therefore, we can remove them and the rules which expand them.

* The removed opcodes are:

  LoweredAdd64Carry
  ADDconstForCarry
  MaskIfNotCarry
  FlagCarryClear
  FlagCarrySet

Change-Id: I1ebe2726ed988f29ed4800c8f57b428f7a214cd0
Reviewed-on: https://go-review.googlesource.com/c/go/+/249462
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
2020-08-27 13:07:57 +00:00
ShihCheng Tu
47b4509977 doc/go1.14: document json.Umarshal map key support of TextUnmarshaler
Document that json.Unmarshal supports map keys whose underlying
types implement encoding.TextUnmarshaler.

Fixes #38801

Change-Id: Icb9414e9067517531ba0da910bd4a2bb3daace65
Reviewed-on: https://go-review.googlesource.com/c/go/+/237857
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-27 09:47:26 +00:00
Ian Lance Taylor
e9ad52e46d net: export ErrClosed
This permits programs to reliably detect whether they are using a
closed network connection.

Fixes #4373

Change-Id: Ib4ce8cc82bbb134c4689f0ebc8b9b11bb8b32a22
Reviewed-on: https://go-review.googlesource.com/c/go/+/250357
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Russ Cox <rsc@golang.org>
2020-08-26 22:48:00 +00:00
Michael Matloob
694fc8e76b cmd/go/internal/modload: reject some bad module paths
This change rejects module paths that don't conform to
the new checkModulePathLax function, when loading a go.mod
file. The change uses the checkModulePathLax function instead of
CheckPath because there are still many users who are using
unpublished modules with unpublishable paths, and we don't
want to break them all.

Next, before this change, when go mod init is run in GOPATH,
it would try to use the location of the directory within GOPATH
to infer the module path. After this change, it will only use
that inferred module path if it conforms to module.CheckPath.

Change-Id: Idb36d1655cc76aae82671e87ba634609503ad1a2
Reviewed-on: https://go-review.googlesource.com/c/go/+/211597
Run-TryBot: Michael Matloob <matloob@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-08-26 21:35:30 +00:00
Jay Conrod
008048c5f4 doc: add module retraction to release notes
For #24031

Change-Id: I9bd0905e9aacee4bec3463b7d91f6f0929744752
Reviewed-on: https://go-review.googlesource.com/c/go/+/228384
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-08-26 21:17:33 +00:00
Jay Conrod
32c09aeb1d cmd/go: improve 'go get' handling of retracted versions
'go get' will now warn about retracted versions in the build list,
after updating go.mod. The warning instructs users to run
'go get module@latest' to upgrade or downgrade away from the retracted
version.

'go get' now allows users to explicitly request a specific retracted
version.

For #24031

Change-Id: I15fda918dc84258fb35b615dcd33b0f499481bd7
Reviewed-on: https://go-review.googlesource.com/c/go/+/228383
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-08-26 21:17:11 +00:00
Jay Conrod
eb3e27ac1a cmd/go: add -retracted flag to 'go list'
The -retracted flag causes 'go list' to load information about
retracted module module versions.

When -retracted is used with -f or -json, the Retracted field is set
to a string containing the reason for the retraction on retracted
module versions. The string is based on comments on the retract
directive. This field is also populated when the -u flag is used.

When -retracted is used with -versions, retracted versions are shown.
Normally, they are omitted.

For #24031

Change-Id: Ic13d516eddffb1b8404e21034f78cecc9896d1b8
Reviewed-on: https://go-review.googlesource.com/c/go/+/228382
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-08-26 21:17:01 +00:00
Jay Conrod
0bbd386e8b cmd/go: add -retract and -dropretract flags to 'go mod edit'
'go mod edit' can now add and remove 'retract' directives from go.mod
files.

Also, retractions are now included in the 'go mod edit -json' output.

For #24031

Change-Id: Ife7915e259fa508626d6ec5f786b5c860b489599
Reviewed-on: https://go-review.googlesource.com/c/go/+/228381
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-08-26 21:12:55 +00:00
Jay Conrod
c769f034d7 cmd/go/internal/modload: support go.mod retract directive
The go command now recognizes 'retract' directives in go.mod. A
retract directive may be used by a module author to indicate a
version should not be used. The go command will not automatically
upgrade to a retracted version. Retracted versions will not be
considered when resolving version queries like "latest" that don't
refer to a specific version.

Internally, when the go command resolves a version query, it will find
the highest release version (or pre-release if no release is
available), then it will load retractions from the go.mod file for
that version. Comments on retractions are treated as a rationale and
may appear in error messages. Retractions are only loaded when a query
is resolved, so this should have no impact on performance for most
builds, except when go.mod is incomplete.

For #24031

Change-Id: I17d643b9e03a3445676dbf1a5a351090c6ff6914
Reviewed-on: https://go-review.googlesource.com/c/go/+/228380
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-08-26 21:12:37 +00:00
Jay Conrod
db821b54d1 cmd/go/internal/modload: refactor version filtering for exclude
Query and other functions now accept an "allowed" function that
returns an error (previously, the function returned a bool). If the
error is equivalent to ErrDisallowed, it indicates the version is
excluded (or, in a future CL, retracted). This provides predicates a
chance to explain why a version is not allowed.

When a query refers to a specific revision (by version, branch, tag,
or commit name), most callers will not use the Allowed predicate. This
allows commands like 'go list -m' and 'go mod download' to handle
disallowed versions when explicitly requested. 'go get' will reject
excluded versions though.

When a query does not refer to a specific revision (for example,
"latest"), disallowed versions will not be considered.

When an "allowed" predicate returns an error not equivalent to
ErrDisallowed, it may be ignored or returned, depending on the
case. This never happens for excluded versions, but it may happen for
retractions (in a future CL). This indicates a list of retractions
could not be loaded. This frequently happens when offline, and it
shouldn't cause a fatal or warning in most cases.

For #24031

Change-Id: I4df6fb6bd60e3e0259e5b3b4bf71a307b4b32298
Reviewed-on: https://go-review.googlesource.com/c/go/+/228379
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-08-26 21:12:19 +00:00
Jay Conrod
bf869c65d1 cmd/go: update vendored golang.org/x/mod
This CL vendors go.mod parser changes for the retract directive.

For #24031

Change-Id: Ief19b0eca4c7956eceadc893bb209da7e9ecf22c
Reviewed-on: https://go-review.googlesource.com/c/go/+/228377
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
2020-08-26 21:11:51 +00:00
Michael Matloob
d4986e0e1d cmd/go/internal/modload: reject empty go.mod files
Don't add a module declaration to a go.mod file when
loading a module. Require a user to call go mod init or to
add the module declaration themselves.

Fixes #35070

Change-Id: If5543580d3c1cfee1fc528eb853b872c4173ca82
Reviewed-on: https://go-review.googlesource.com/c/go/+/234107
Run-TryBot: Michael Matloob <matloob@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-08-26 20:55:41 +00:00
Cuong Manh Le
6f561e65b1 cmd/fix: remove un-used code
Change-Id: Ibbd9da6fd1f3219c9c6103d8f858347ab3a21210
Reviewed-on: https://go-review.googlesource.com/c/go/+/250857
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-08-26 16:38:34 +00:00
zhouzhongyuan
63828096f6 math/big: add function example
While reading the source code of the math/big package, I found the SetString function example of float type missing.

Change-Id: Id8c16a58e2e24f9463e8ff38adbc98f8c418ab26
Reviewed-on: https://go-review.googlesource.com/c/go/+/232804
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2020-08-26 16:15:32 +00:00
Cherry Zhang
3ffa1381ec cmd/internal/objabi: delete doc.go
cmd/internal/objabi/doc.go has comments decribing the (old)
object file format. But cmd/internal/objabi has nothing to do
with object files, and never did. Delete.

Move some comment to cmd/internal/goobj, where the (new) object
file format is actually defined, and update to reflect the
current status.

Change-Id: Ied96089df4be35e5d259a572ed60ee00f2cd0d1d
Reviewed-on: https://go-review.googlesource.com/c/go/+/249958
Reviewed-by: Than McIntosh <thanm@google.com>
2020-08-26 15:05:43 +00:00
Michael Munday
03eb7e20e4 cmd/compile: apply strong typing to all remaining s390x rewrite rules
This CL applies strong aux typing to the remaining s390x rewrite
rules in preparation for strong aux typing becoming the default.

Passes toolstash-check on s390x.

Change-Id: Id585b0db492780737818024e1b22b4837435b525
Reviewed-on: https://go-review.googlesource.com/c/go/+/250558
Run-TryBot: Michael Munday <mike.munday@ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2020-08-26 09:45:57 +00:00
Richard Musiol
758ac371ab misc/wasm: make wasm_exec more robust against uncommon environments
JavaScript environments are quite unpredictable because bundlers add
mocks for compatibility and libraries can polute the global namespace.
Detect more of such situations:

- Add check that require("fs") returns an object.
- Fix check that require("fs") returns an non-empty object.
- Add check that "module" is defined.

Fixes #40730

Change-Id: I2ce65fc7db64bbbb0b60eec79a4cfe5c3fec99c0
Reviewed-on: https://go-review.googlesource.com/c/go/+/248758
Run-TryBot: Richard Musiol <neelance@gmail.com>
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Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-08-25 21:15:43 +00:00
Michael Fraenkel
8381408048 net/http: fix detection of Roundtrippers that always error
CL 220905 added code to identify alternate transports that always error
by using http2erringRoundTripper. This does not work when the transport
is from another package, e.g., http2.erringRoundTripper.
Expose a new method that allow detection of such a RoundTripper.
Switch to an interface that is both a RoundTripper and can return the
underlying error.

Fixes #40213

Change-Id: I170739857ab9e99dffb5fa55c99b24b23c2f9c54
Reviewed-on: https://go-review.googlesource.com/c/go/+/243258
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
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2020-08-25 20:04:27 +00:00
Emmanuel T Odeke
3d774611fe src/go.mod, net/http: update bundled and latest golang.org/x/net
Updates x/net/http2 to git rev c89045814202410a2d67ec20ecf177ec77ceae7f

    http2: perform connection health check
    https://golang.org/cl/198040 (fixes #31643)

    http2: use ASCII space trimming for parsing Trailer header
    https://golang.org/cl/231437

    all: update golang.org/x/crypto to v0.0.0-20200622213623-75b288015ac9
    https://golang.org/cl/239700 (updates #30965)

    net/http2: fix erringRoundTripper
    https://golang.org/cl/243257 (updates #40213)

also updates the vendored version of golang.org/x/net as per

$ go get golang.org/x/net@c890458142
$ go mod tidy
$ go mod vendor
$ go generate -run bundle std

Change-Id: Iea2473ef086df760144d9656f03a0218eb9da91f
Reviewed-on: https://go-review.googlesource.com/c/go/+/249842
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-08-25 19:31:26 +00:00
Rob Findley
e3d608a866 go/types: factor out some methods that compute a single error
In order to generate more accurate or informative error messages from
the type checker, it can be helpful to interpret error messages in
context. This is currently achieved in a number of ways:

 + Return a boolean value, and then reverse-engineer the error at the
   callsite (as in representable->representableConst).
 + Return a value causing the error (as in Checker.missingMethod), and
   add the error at the callsite.
 + Pass a "reason" string pointer to capture the error (as in
   Checker.assignableTo), and add the error at the callsite.
 + Pass a "context" string pointer, and use this when writing errors in
   the delegated method.

In all cases, it is the responsibility of whatever code calls
Checker.error* to set the operand mode to invalid.

These methods are used as appropriate, depending on whether multiple
errors are generated, whether additional context is needed, and whether
the mere presence of an error needs to be interpreted at the callsite.
However, this practice has some downsides: the plurality of error
handling techniques can be a barrier to readability and composability.

In this CL, we introduce Yet Another Pattern, with the hope that it can
replace some or all of the existing techniques: factor out side-effect
free functions that evaluate a single error, and add helpers for
recording this error in the Checker.

As a proof of concept this is done for Checker.representable and
Checker.convertUntyped. If the general pattern does not seem appropriate
for replacing some or all of the error-handling techniques listed above,
we should revert to an established technique.

Some internal error APIs are refactored to operate on an error, rather
than a types.Error, with internal error metadata extracted using
errors.As. This seemed to have negligible impact on performance, but we
should be careful about actually wrapping errors: I expect that many
users will expect err to be a types.Error.

Change-Id: Ic5c6edcdc02768cd84e04638fad648934bcf3c17
Reviewed-on: https://go-review.googlesource.com/c/go/+/242082
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2020-08-25 19:13:49 +00:00
Michał Łowicki
00a053bd4b testing: fix Cleanup race with Logf and Errorf
Fixes #40908

Change-Id: I25561a3f18e730a50e6fbf85aa7bd85bf1b73b6e
Reviewed-on: https://go-review.googlesource.com/c/go/+/250078
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-25 18:28:59 +00:00
Bryan C. Mills
8d31ca255b Revert "net/http: fix data race due to writeLoop goroutine left running"
This reverts CL 232799.

Reason for revert: net/http test is failing on all longtest builders.

Change-Id: I4694e34f35419bab2d0b45fa6d8c3ac2aa1f51a0
Reviewed-on: https://go-review.googlesource.com/c/go/+/250597
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-25 18:13:33 +00:00
Steven Hartland
5e1e8c4c9f net/http: fix data race due to writeLoop goroutine left running
Fix a data race for clients that mutate requests after receiving a
response error which is caused by the writeLoop goroutine left
running, this can be seen on canceled requests.

Fixes #37669

Change-Id: I0e0e4fd63266326b32587d8596456760bf848b13
Reviewed-on: https://go-review.googlesource.com/c/go/+/232799
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
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2020-08-25 17:37:38 +00:00
Katie Hockman
91a52de527 crypto/x509: fix duplicate import
Updates dave/dst#45.

Change-Id: I165e6b3d002407a33908bf90a66ad01f8003b260
Reviewed-on: https://go-review.googlesource.com/c/go/+/250497
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
2020-08-25 17:34:17 +00:00
SparrowLii
41bc0a1713 math/big: fix TestShiftOverlap for test -count arguments > 1
Don't overwrite incoming test data.

The change uses copy instead of assigning statement to avoid this.

Change-Id: Ib907101822d811de5c45145cb9d7961907e212c3
Reviewed-on: https://go-review.googlesource.com/c/go/+/250137
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2020-08-25 17:04:40 +00:00
Cuong Manh Le
d3f6e2f300 cmd/compile: report error for unexported name only once
Fixes #22921

Change-Id: If29bd962335ac7676ea4f379727db3d55ae1bf8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/250177
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-08-25 16:06:36 +00:00
Robert Griesemer
27136419d4 encoding/binary: replace constant literals with named constant (cleanup)
Follow-up on https://golang.org/cl/247120.

Brought to my attention by Luke McCoy.

Change-Id: I4530c96fb164d23b0ce5311f2cecb1964f2dea74
Reviewed-on: https://go-review.googlesource.com/c/go/+/249837
Reviewed-by: Katie Hockman <katie@golang.org>
2020-08-25 16:06:28 +00:00
David Chase
bca0b44629 cmd/compile: also check package.function for GOSSAFUNC match
Old behavior is still enabled because it doesn't hurt to leave
it in and existing users of this feature (there are dozens of
us!) will not be surprised.  Adding this finer control allows
users to avoid writing ssa.html where they can't, shouldn't, or
just don't want to.

Example, both ways:

$ GOSSAFUNC="(*Reader).Reset" go test -c -o ./a compress/gzip
dumped SSA to bytes/ssa.html
dumped SSA to strings/ssa.html
dumped SSA to bufio/ssa.html
dumped SSA to compress/gzip/ssa.html

$ GOSSAFUNC="compress/gzip.(*Reader).Reset" go test -c -o ./a compress/gzip
dumped SSA to compress/gzip/ssa.html

Updates #40919.

Change-Id: I06b77c3c1d326372a32651570b5dd6e56dfb1d7f
Reviewed-on: https://go-review.googlesource.com/c/go/+/250340
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2020-08-25 14:51:49 +00:00
Tobias Klauser
02f445258c cmd/link: remove superfluous check in TestIssue34788Android386TLSSequence
err != nil is already checked in the if condition one line above.

Change-Id: If36cdb41016f7be98a65be0a7211d85cd6017f87
Reviewed-on: https://go-review.googlesource.com/c/go/+/250477
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-08-25 14:47:39 +00:00