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49119 Commits

Author SHA1 Message Date
Joe Tsai
6e50991d2a strconv: reject surrogate halves in Unquote
Unquote implements unescaping a "single-quoted, doubled-quoted, or
backquoted Go string literal". Therefore, it should reject anything
that the Go specification explicitly forbids.

The section on "Rune literals" explicitly rejects rune values
"above 0x10FFFF and surrogate halves". We properly checked for
the previous condition, but were failing to check for the latter.

In general, "r > utf8.MaxRune" is probably the wrong check,
while !utf8.ValidRune(r) is the more correct check.
We make changes to both UnquoteChar and appendEscapedRune
to use the correct check. The change to appendEscapedRune
is technically a noop since callers of that function already
guarantee that the provided rune is valid.

Fixes #47853

Change-Id: Ib8977e56b91943ec8ada821b8d217b5e9a66f950
Reviewed-on: https://go-review.googlesource.com/c/go/+/343877
Trust: Joe Tsai <joetsai@digital-static.net>
Run-TryBot: Joe Tsai <joetsai@digital-static.net>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2021-08-21 18:23:58 +00:00
Joel Sing
8fff20ffeb cmd/compile: absorb NEG into branch when possible on riscv64
We can end up with this situation due to our equality tests being based on
'SEQZ (SUB x y)' - if x is a zero valued constant, 'SUB x y' can be converted
to 'NEG x'. When used with a branch the SEQZ can be absorbed, leading to
'BNEZ (NEG x)' where the NEG is redundant.

Removes around 1700 instructions from the go binary on riscv64.

Change-Id: I947a080d8bf7d2d6378ab114172e2342ce2c51db
Reviewed-on: https://go-review.googlesource.com/c/go/+/342850
Trust: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-08-21 11:23:14 +00:00
Joel Sing
bcd146d398 cmd/compile: convert branch with zero to more optimal branch zero on riscv64
Convert BLT and BGE with a zero valued constant to BGTZ/BLTZ/BLEZ/BGEZ as
appropriate.

Removes over 4,500 instructions from the go binary on riscv64.

Change-Id: Icc266e968b126ba04863ec88529630a9dd44498b
Reviewed-on: https://go-review.googlesource.com/c/go/+/342849
Trust: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
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2021-08-21 11:22:07 +00:00
Joel Sing
dcee007aad cmd/compile: sort regalloc switch by architecture
Also tweak comment for the arm64 case.

Change-Id: I073405bd2acf901dcaaf33a034a84b6a09dd4a83
Reviewed-on: https://go-review.googlesource.com/c/go/+/334869
Trust: Joel Sing <joel@sing.id.au>
Reviewed-by: Meng Zhuo <mzh@golangcn.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-08-21 08:58:07 +00:00
Robert Griesemer
e17439e087 go/types: don't override x.mode before using it
Changing the mode of x before using the old value is clearly wrong.
And x is not needed anymore afterward so besides being misplaced,
the assignment is not needed in the first place.

Tested manually as it's a bit complicated to set up a test.

Needs to be back-ported to 1.17.

Fixes #47777.

Change-Id: I06f1fa9443eb98009b4276f566d557fd52f1d6d3
Reviewed-on: https://go-review.googlesource.com/c/go/+/343809
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-08-21 00:55:22 +00:00
Matthew Dempsky
c9912780ab cmd/compile: enable -G=3 by default
This CL changes cmd/compile's -G flag's default from 0 to 3, which
enables use of the new types2 type checker and support for type
parameters. The old type checker is still available with
-gcflags=all=-G=0.

The CL also updates the regress test harness to account for the change
in default behavior (e.g., to expect known types2 changes/failures).
However, the -G=0 mode is still being tested for now.

Copy of CL 340914 by danscales@, minus the cmd/internal/objabi.AbsFile
change (handled instead by CL 343731) and rebased to master branch.

Updates #43651.

Change-Id: I1f62d6c0a3ff245e15c5c0e8f3d922129fdd4f29
Reviewed-on: https://go-review.googlesource.com/c/go/+/343732
Trust: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>
2021-08-21 00:24:02 +00:00
korzhao
97d17dc023 test/typeparam: add a test case for issue46591
Fixes #46591

Change-Id: I4875092ecd7760b0cd487e793576ef7a9a569a0e
Reviewed-on: https://go-review.googlesource.com/c/go/+/343970
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
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2021-08-20 21:00:08 +00:00
Russ Cox
835ff47c16 cmd/internal/buildid: reject empty id
The loop that makes progress assumes that after matching an id
you should advance len(id) bytes in the file. If id is the empty string,
then it will match and advance 0 bytes repeatedly.

0-byte ids are not really build IDs, so just reject it outright.

Fixes #47852.

Change-Id: Ie44a3a51dec22e2f68fb72d54ead91be98000cfe
Reviewed-on: https://go-review.googlesource.com/c/go/+/344049
Trust: Russ Cox <rsc@golang.org>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
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2021-08-20 20:20:19 +00:00
Cuong Manh Le
f67e31d643 test: enable regabi test on arm64
CL 324890 turned on register ABI by default on ARM64, causing neither
live.go nor live_regabi.go is run on ARM64.

This CL enables live_regabi.go test for ARM64.

Change-Id: I0c483a38b761c5a6f1fa9a5b3324b5da64907e61
Reviewed-on: https://go-review.googlesource.com/c/go/+/343531
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-08-20 19:58:13 +00:00
Matthew Dempsky
ab9aaf46ee cmd/compile/internal/syntax: add PosBase.Trimmed
With types2, some syntax.PosBases need to be constructed from export
data, which must only contain "trimmed" filenames (i.e., that they've
already been made absolute and undergone -trimpath processing).
However, it's not safe to apply trimming to a filename multiple times,
and in general we can't distinguish trimmed from untrimmed filenames.

This CL resolves this by adding a PosBase.Trimmed boolean so we can
distinguish whether the associated filename has been trimmed yet. This
is a bit hacky, but is the least bad solution I've come up with so
far.

This unblocks enabling -G=3 by default.

Change-Id: I7383becfb704680a36f7603e3246af38b21f100b
Reviewed-on: https://go-review.googlesource.com/c/go/+/343731
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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Trust: Matthew Dempsky <mdempsky@google.com>
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-20 19:44:02 +00:00
HuanCheng
5045477be8 net/http: fix typo in header.go
Change-Id: Ia6df881badf9a704c7f56967404d37e230b88a09
Reviewed-on: https://go-review.googlesource.com/c/go/+/343969
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Damien Neil <dneil@google.com>
2021-08-20 18:55:57 +00:00
Robert Findley
0f25251127 go/types: change Checker.verify to return an error
This is a port of CL 342151 to go/types, adjusted for errors and
positions. Checker.sprintf was refactored to facilitate formatting
error messages with a nil Checker.

Change-Id: Ib2e5c942e55edaff7b5e77cf68a72bad70fea0b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/342670
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-20 18:45:25 +00:00
Robert Findley
30a423eb39 go/types: no need to validate substituted instances
This is a straightforward port of CL 342150 to go/types.

Change-Id: I7363e4642ade7ab30ca822a2be71f4d2804cc4a9
Reviewed-on: https://go-review.googlesource.com/c/go/+/342669
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-20 18:45:13 +00:00
Robert Findley
e49775e057 go/types: consolidate verification logic
This is a straightforward port of CL 342149 to go/types.

Change-Id: I468c5154b7545b7816bb3f240b8db91e7a1fd3f6
Reviewed-on: https://go-review.googlesource.com/c/go/+/342488
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-20 18:45:05 +00:00
Robert Findley
4d00fcbc43 go/types: clean up panics in instantiation
This is a straightforward port of CL 341862 to go/types.

Change-Id: I4214c08d2889e2daf40254385656c6beed79571d
Reviewed-on: https://go-review.googlesource.com/c/go/+/342487
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-20 18:44:58 +00:00
Roland Shoemaker
bacbc33439 archive/zip: prevent preallocation check from overflowing
If the indicated directory size in the archive header is so large that
subtracting it from the archive size overflows a uint64, the check that
the indicated number of files in the archive can be effectively
bypassed. Prevent this from happening by checking that the indicated
directory size is less than the size of the archive.

Thanks to the OSS-Fuzz project for discovering this issue and to
Emmanuel Odeke for reporting it.

Fixes #47801
Fixes CVE-2021-39293

Change-Id: Ifade26b98a40f3b37398ca86bd5252d12394dd24
Reviewed-on: https://go-review.googlesource.com/c/go/+/343434
Trust: Roland Shoemaker <roland@golang.org>
Run-TryBot: Roland Shoemaker <roland@golang.org>
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Reviewed-by: Russ Cox <rsc@golang.org>
2021-08-20 16:49:35 +00:00
Tobias Klauser
7007431374 crypto/rand, internal/syscall/unix: don't use getentropy on iOS
CL 302489 switched crypto/rand to use getentropy on darwin, however this
function is not available on iOS. Enable getentropy only on macOS and
disable it on iOS.

Fixes #47812

Change-Id: Ib7ba5d77346aee87904bb93d60cacc845f5c0089
Reviewed-on: https://go-review.googlesource.com/c/go/+/343609
Trust: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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2021-08-20 16:44:10 +00:00
Cuong Manh Le
303446395d cmd/compile: use typeAndStr directly in signatslice
Currently, we store *types.Type in signatslice, then convert it to
typeAndStr during write runtime type process.

Instead, we can just store typeAndStr directly in signatslice when
adding type to signatset. Not a big win, but simplify the code a bit.

Change-Id: Ie1c8cfa5141da32b6ec3ce5844ba150d2765fe90
Reviewed-on: https://go-review.googlesource.com/c/go/+/343529
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Keith Randall <khr@golang.org>
2021-08-20 16:23:47 +00:00
eric fang
e9e0d1ef70 cmd/asm/internal/arch: adds the missing type check for arm64 SXTB extension
Operands of memory type do not support SXTB extension. This CL adds this
missing check.

Change-Id: I1fa438dd314fc8aeb889637079cc67b538e83a89
Reviewed-on: https://go-review.googlesource.com/c/go/+/342769
Reviewed-by: eric fang <eric.fang@arm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: eric fang <eric.fang@arm.com>
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Trust: Michael Knyszek <mknyszek@google.com>
2021-08-20 03:25:36 +00:00
eric fang
c92c2c9d62 cmd/internal/obj/arm64: disable the pre and post index formats for pseudo registers
When using the FP or SP pseudo-register to load or store, pre-index and post-index formats
are not supported because the RSP and pseudo registers are not allowed to be modified in this
way. This CL deletes the related entries in optab and adds a few test cases.

Change-Id: Ie30d27d0e7b959242f0e6298b950489669d07989
Reviewed-on: https://go-review.googlesource.com/c/go/+/342770
Reviewed-by: eric fang <eric.fang@arm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: eric fang <eric.fang@arm.com>
Trust: Michael Knyszek <mknyszek@google.com>
2021-08-20 03:25:17 +00:00
Manlio Perillo
65074a4086 cmd/dist: remove unused variables
Remove the unused defaultcflags and defaultldflags variables.

Reported by staticcheck.

Change-Id: Icc42f2e670496dbe2ffb26abe25128d8e53e2a6d
Reviewed-on: https://go-review.googlesource.com/c/go/+/321931
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
2021-08-19 20:50:13 +00:00
Changkun Ou
0e598e7da4 syscall: add SyscallN
This CL adds a new syscall.SyscallN API.

The proposal discussion also suggests the API should not only for
Windows but other platforms. However, the existing API set already
contain differences between platforms, hence the CL only implements
the Windows platform.

Moreover, although the API offers variadic parameters, the permitted
parameters remains up to a limit, which is selected as 42, and arguably
large enough.

Fixes #46552

Change-Id: I66b49988a304d9fc178c7cd5de46d0b75e167a4f
Reviewed-on: https://go-review.googlesource.com/c/go/+/336550
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Trust: Matthew Dempsky <mdempsky@google.com>
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
2021-08-19 17:30:19 +00:00
Cuong Manh Le
91e2e3b903 cmd/compile: prevent duplicated works in WriteRuntimeTypes
While processing signatset, the entry is deleted immediately after being
pushed to signatslice. Then calling writeType may add the same type
to signatset again. That would add more works, though not a big impact
to the performace, since when writeType is guarded by s.Siggen() check.

Instead, we should keep the entry in signatset, so written type will
never be added again.

This change does not affect compiler performace, but help debugging
issue like one in #46386 easier.

Change-Id: Iddafe773885fa21cb7003ba27ddf9554fc3f297d
Reviewed-on: https://go-review.googlesource.com/c/go/+/326029
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Keith Randall <khr@golang.org>
2021-08-19 16:10:32 +00:00
Keith Randall
9871726c72 reflect: add test for invalid conversion
Conversion between slices with different element types is not allowed.
Previously (1.8 <= goversion <= 1.16), this conversion was allowed
if the base types were from different packages and had identical names.

Update #47785

Change-Id: I359de5b6fe3ff35bdbf9ab5a13902a0f820cac66
Reviewed-on: https://go-review.googlesource.com/c/go/+/343329
Trust: Keith Randall <khr@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-08-19 15:09:47 +00:00
Robert Findley
69d8fbec7a cmd/compile/internal/types2: return an error from Instantiate
Change Instantiate to be a function (not a method) and return an error.
Introduce an ArgumentError type to report information about which type
argument led to an error during verification.

This resolves a few concerns with the current API:
 - The Checker method set was previously just Files. It is somewhat odd
   to add an additional method for instantiation. Passing the checker as
   an argument seems cleaner.
 - pos, posList, and verify were bound together. In cases where no
   verification is required, the call site was somewhat cluttered.
 - Callers will likely want to access structured information about why
   type information is invalid, and also may not have access to position
   information. Returning an argument index solves both these problems;
   if callers want to associate errors with an argument position, they
   can do this via the resulting index.

We may want to make the first argument an opaque environment rather than
a Checker.

Change-Id: I3bc56d205c13d832b538401a4c91d3917c041225
Reviewed-on: https://go-review.googlesource.com/c/go/+/342152
Trust: Robert Findley <rfindley@google.com>
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2021-08-19 15:05:05 +00:00
Roger Peppe
3bdc1799d6 io: unexport internal methods
The methods on the pipe type don't need to be exported. Doing so sets
a bad precedent that it's OK to export methods to indicate an internal
public API.  That's not a good idea in general, because exported methods
increase cognitive load when reading code: the reader needs to consider
whether the exported method might be used via some external interface
or reflection.

Change-Id: Ib13f1b3f9fe0ff251628f31b776182a0953268ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/341409
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
Reviewed-by: Joe Tsai <joetsai@digital-static.net>
Trust: Daniel Martí <mvdan@mvdan.cc>
2021-08-19 09:11:02 +00:00
Roger Peppe
740f7d7370 archive/tar: unexport internal methods
Many of the methods inside the archive/tar package don't need to be
exported. Doing so sets a bad precedent that it's OK to export methods
to indicate an internal public API.  That's not a good idea in general,
because exported methods increase cognitive load when reading code:
the reader needs to consider whether the exported method might be used
via some external interface or reflection.

This CL should have no externally visible behaviour changes at all.

Change-Id: I94a63de5e6a28e9ac8a283325217349ebce4f308
Reviewed-on: https://go-review.googlesource.com/c/go/+/341410
Reviewed-by: Joe Tsai <joetsai@digital-static.net>
Trust: Joe Tsai <joetsai@digital-static.net>
Trust: Michael Knyszek <mknyszek@google.com>
2021-08-19 09:09:02 +00:00
Matthew Dempsky
c85695a117 cmd/compile: add support for //go:nointerface for -G=3
This is used within Google's internal code repo, so getting it working
is a pre-req for enabling -G=3 by default.

Change-Id: Icbc570948c852ca09cdb2a59f778140f620244b2
Reviewed-on: https://go-review.googlesource.com/c/go/+/343429
Trust: Matthew Dempsky <mdempsky@google.com>
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2021-08-19 00:26:22 +00:00
Matthew Dempsky
322879d5c9 cmd/compile/internal/dwarfgen: use src.Pos.Rel{Filename,Line,Col} consistently
It appears that this code predates golang.org/cl/96535, which added
RelCol to support /*line*/ directives.

Change-Id: Ib79cebc1be53af706e84e8799eeea81ef8c81c8b
Reviewed-on: https://go-review.googlesource.com/c/go/+/343430
Trust: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
2021-08-18 23:19:19 +00:00
Keith Randall
687f2acf6a cmd/compile: only use dictionaries for conversions to type parameters
Conversions to regular concrete types should not be rewritten during
stenciling.

Fixes #47740

Change-Id: I2b45e22f962dcd2e18bd6cc876ebc0f850860822
Reviewed-on: https://go-review.googlesource.com/c/go/+/342989
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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2021-08-18 22:34:31 +00:00
Robert Findley
eda3de0f79 cmd/compile/internal/types2: change Checker.verify to return an error
In preparation for upcoming API changes, change the internal API for
verification of type arguments to return an error and argument index,
and use this to lift up error reporting into Instantiate.

Change-Id: I88b1e64dd9055c4c20c0db49c96c79c5da894450
Reviewed-on: https://go-review.googlesource.com/c/go/+/342151
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-18 22:16:57 +00:00
Robert Findley
805d38a352 cmd/compile/internal/types2: no need to validate substituted instances
When substituting a type instance, we rely on the instance being
expanded and do not call validType, so there is need to depend on
subster.pos for error reporting or to use subst.check for creating the
new Named type. Errors will be reported for the unsubstituted instance.

This is a superficial change, but justifies some later simplification
where we don't have access to pos or check.

Change-Id: I1f3f12aa245d821512c6242ad829c940f20afae4
Reviewed-on: https://go-review.googlesource.com/c/go/+/342150
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2021-08-18 22:16:08 +00:00
Matthew Dempsky
c2bd9ee2db cmd/compile: only sort methods/interfaces during export for -d=unifiedquirks
These sorts are only important for 'toolstash -cmp' testing of unified
IR against -G=0 mode, but they were added before I added
-d=unifiedquirks to allow altering small "don't care" output details
like this.

This CL should help mitigate issues with #44195 until package
objectpath is updated and deployed.

Change-Id: Ia3dcf359481ff7abad5ddfca8e673fd2bb30ae01
Reviewed-on: https://go-review.googlesource.com/c/go/+/343390
Trust: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-18 21:19:22 +00:00
Robert Findley
8f0578ef39 cmd/compile/internal/types2: consolidate verification logic
Change an internal call of instantiateLazy to call Instantiate, so that
we can consolidate the logic for invoking verification.

This made verification of signatures lazy, which is not necessary but
should be harmless.

Change-Id: I2e59b04ac859e08c2e2910ded3c183093d1e34a7
Reviewed-on: https://go-review.googlesource.com/c/go/+/342149
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-18 20:12:37 +00:00
Robert Findley
165ebd85a7 cmd/compile/internal/types2: clean up panics in instantiation
Clean up a few issues related to panicking during invalid instantiation.
 - Panic early in instantiateLazy when check == nil and verify == true.
   Otherwise, we would panic at check.later.
 - Always panic when check == nil and verify == true, even if targs is
   of incorrect length. This is more consistent behavior.
 - Lift the check for len(posList) <= len(targs) out of
   Checker.instantiate. This is the only reason why posList is passed to
   that function, and doing this allows us to eliminate posList from
   instance. At this point instance is close to being unnecessary, so
   update a TODO to this effect.

Change-Id: Id5f44cbb1a5897aef10ce2a573aa78acd7ae4026
Reviewed-on: https://go-review.googlesource.com/c/go/+/341862
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-18 20:11:28 +00:00
Yuki Osaki
4a0fd73ead cmd/go/internal/work/exec: throw an error when buildP is negative
Fixed a problem where an error would not occur
when a negative value was specified for the p flag.

`go build -p=0`
now should throw an error.

this is my first pr to this project.
If there's anything I'm missing, please let me know 🙏
Fixes #46686

Change-Id: I3b19773ef095fad0e0419100d317727c2268699a
GitHub-Last-Rev: e5c57804d9
GitHub-Pull-Request: golang/go#47360
Reviewed-on: https://go-review.googlesource.com/c/go/+/336751
Reviewed-by: Jay Conrod <jayconrod@google.com>
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2021-08-18 17:25:17 +00:00
Tobias Klauser
0c83e01e0c cmd/go/testdata/script: fix test script added by CL 334873
CL 334873 added the net/http import to the wrong section in
test_vet.txt. Correct this to fix the longtest builders.

Change-Id: If28409ad1c2ed3bd3a2922fc20d5e534c30fa249
Reviewed-on: https://go-review.googlesource.com/c/go/+/343169
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Trust: Jay Conrod <jayconrod@google.com>
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2021-08-18 15:11:52 +00:00
Yasuhiro Matsumoto
8b471db71b path/filepath: change IsAbs to treat \\host\share as an absolute path
Fixes #47123

Change-Id: I2226b8a9ea24cd88171acfbaffea2566309416de
Reviewed-on: https://go-review.googlesource.com/c/go/+/334809
Trust: Alex Brainman <alex.brainman@gmail.com>
Trust: Hajime Hoshi <hajimehoshi@gmail.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
2021-08-18 08:26:44 +00:00
Meng Zhuo
946e2543f8 runtime: use RDCYCLE for cputicks on riscv64
Use RDCYCLE instruction instead of RDTIME emulation

Change-Id: Id7b3de42a36d2d1b163c39cc79870eee7c840ad5
Reviewed-on: https://go-review.googlesource.com/c/go/+/332954
Trust: Meng Zhuo <mzh@golangcn.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-08-18 02:08:09 +00:00
eric fang
8e18428e38 cmd/internal/obj/arm64: don't use REGTMP when moving C_AACON2 to a register
MOVD $C_AACON2(Rf), Rt is encoded as ADD $C_AACON2_high_12_bits, Rf, REGTMP +
ADD $C_AACON2_low_12_bits, REGTMP, Rt. Actually REGTMP is not necessary here,
we can use Rt directly, so it becomes ADD $C_AACON2_high_12_bits, Rf, Rt +
ADD $C_AACON2_low_12_bits, Rt, Rt.

Change-Id: I90b7718b5fb0ab9f3ea28511f42946a6bdccfef3
Reviewed-on: https://go-review.googlesource.com/c/go/+/329751
Reviewed-by: eric fang <eric.fang@arm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Trust: eric fang <eric.fang@arm.com>
Run-TryBot: eric fang <eric.fang@arm.com>
2021-08-18 02:07:22 +00:00
eric fang
aef24d8f7d cmd/internal/obj/arm64: fix the encoding error when operating with ZR
Some arm64 instructions accept ZR as its destination register, such as MOVD,
AND, ADD etc. although it doesn't seem to make much sense, but we should
make sure the encoding is correct. However there exists some encoding mistakes
in the current assembler, they are:
1, 'MOVD $1, ZR' is incorrectly encoded as 'MOVD $1, ZR' + '0x00000000'.
2, 'AND $1, R2, ZR' is incorrectly encoded as 'MOVD $1, R27' + 'AND R27, R2, ZR' +
   '0x00000000'.
3, 'AND $1, ZR' is incorrectly encoded as 'AND $1, ZR, RSP'.

Obviously the first two encoding errors can cause SIGILL, and the third one will
rewrite RSP.

At the same time, I found some weird encodings but they don't cause errors.
4, 'MOVD $0x0001000100010001, ZR' is encoded as 'MOVW $1, ZR' + 'MOVKW $(1<<16), ZR'.
5, 'AND $0x0001000100010001, R2, ZR' is encoded as 'MOVD $1, R27' + 'MOVK $(1<<16), R27' +
   'MOVK $(1<<32), R27'.

Some of these issues also apply to 32-bit versions of these instructions.

These problems are not very complicated, and are basically caused by the improper
adaptation of the class of the constant to the entry in the optab. But the relationship
between these constant classes is a bit complicated, so I don't know how to deal with
issue 4 and 5, because they won't cause errors, so this CL didn't deal with them.

This CL fixed the first three issues.
Issue 1:
  before: 'MOVD $1, ZR' => 'MOVD $1, ZR' + '0x00000000'.
  after:  'MOVD $1, ZR' => 'MOVD $1, ZR'.
Issue 2:
  before: 'AND $1, R2, ZR' => 'MOVD $1, R27' + 'AND R27, R2, ZR' + '0x00000000'.
  after:  'AND $1, R2, ZR' => 'ORR $1, ZR, R27' + 'AND R27, R2, ZR'.
Issue 3:
  before: 'AND $1, ZR' => 'AND $1, ZR, RSP'.
  after:  'AND $1, ZR' => 'ORR $1, ZR, R27' + 'AND R27, ZR, ZR'.

Change-Id: I3c889079229f847b863ad56c88966be12d947202
Reviewed-on: https://go-review.googlesource.com/c/go/+/329750
Reviewed-by: eric fang <eric.fang@arm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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2021-08-18 02:06:51 +00:00
Cherry Mui
ddfcc02352 cmd/link: do not use GO_LDSO when cross compile
GO_LDSO is a setting that is set when the toolchain is build. It
only makes sense to use it on the host platform. Do not use it
when targetting a different platform.

In the past it was not a problem as GO_LDSO was almost always
unset. Now, with CL 301989 it is almost always set (maybe we want
to revisit it).

Fixes #47760.

Change-Id: I2704b9968781f46e2d2f8624090db19689b1a32f
Reviewed-on: https://go-review.googlesource.com/c/go/+/343010
Trust: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-08-17 23:59:53 +00:00
Paschalis Tsilias
a2a9a7b513 cmd/go: make mod init disallow invalid major version suffixes
This CL reuses the SplitPathVersion function from the module package to
detect invalid major version suffixes and return a relevant error
message along with a suggested fix.

Fixes #44052
Fixes #46085

Change-Id: I6c06f31a134e864a1d9b6e00c048ca1c59b4365e
Reviewed-on: https://go-review.googlesource.com/c/go/+/288712
Reviewed-by: Jay Conrod <jayconrod@google.com>
Trust: Jay Conrod <jayconrod@google.com>
Trust: Bryan C. Mills <bcmills@google.com>
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2021-08-17 21:34:32 +00:00
Colin Arnott
3848488f0f cmd/go/internal/test: add an all sentinel to -vet
The vet flag either accepts a list of vets to run, or a distinguished
value, off, to disable vet during test. By default only 100% reliable
checks are run, thus there is no way to run all vets. This change adds
another distinguished value, all, that runs every vet, by passing no
flags.

During development it was discovered that parsing of the -vet flag value
is problematic, in that it accepts deprecated flags like -all. The root
cause is detailed in #47309, but for now passing distinguished values
(all, off) and anything else returns an error.

Fixes #45963

Change-Id: I39fafb7d717dad51b507d560b3f6e604510a2881
Reviewed-on: https://go-review.googlesource.com/c/go/+/334873
Trust: Than McIntosh <thanm@google.com>
Trust: Jay Conrod <jayconrod@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2021-08-17 21:25:51 +00:00
kezhao
ace1730a41 cmd/go: go test flag -failfast should be cacheable
Add failfast to cacheable list and update docs

Fixes #47355

Change-Id: I75b371c45b80a3b179ff070b7b9d092a504380c0
GitHub-Last-Rev: abe61fd48c
GitHub-Pull-Request: golang/go#47371
Reviewed-on: https://go-review.googlesource.com/c/go/+/337229
Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
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2021-08-17 21:18:41 +00:00
Robert Griesemer
0f85b0c0e1 go/types: fix method lookup for type-parameter based types
This is a clean port of CL 342990.

Fixes #47747.

Change-Id: I2e86fb8b70d42a220ac1ba25798d9e58227ba5f6
Reviewed-on: https://go-review.googlesource.com/c/go/+/342991
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Reviewed-by: Robert Findley <rfindley@google.com>
2021-08-17 20:57:50 +00:00
Robert Griesemer
9d9e3291fa cmd/compile/internal/types2: fix method lookup for type-parameter based types
Pointers to type parameters don't have methods, but pointers to
defined types whose underlying types are type parameters may have
methods. Fix the respective test.

For #47747.

Change-Id: I1de47be094ed9297f0e7782538011657c37c5adc
Reviewed-on: https://go-review.googlesource.com/c/go/+/342990
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
2021-08-17 20:57:49 +00:00
Leonard Wang
cf12b0d1f9 cmd/trace: use newTaskDesc to create taskDesc
Change-Id: I9bec8e2c4a9e1b9aa2baf883504200b5674844f8
Reviewed-on: https://go-review.googlesource.com/c/go/+/335609
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
Trust: Michael Pratt <mpratt@google.com>
2021-08-17 16:22:15 +00:00
Cherry Mui
3001b0abf0 cmd/link: remove elfwritedynentsym
elfwritedynentsym and elfWriteDynEntSym are identical.

Change-Id: I893a9a65fdc496f98ba6e66c2bf1ed8dd52f52fd
Reviewed-on: https://go-review.googlesource.com/c/go/+/342709
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Reviewed-by: Than McIntosh <thanm@google.com>
2021-08-17 15:00:04 +00:00
Yasuhiro Matsumoto
4012fea822 all: fix typos
Change-Id: I83180c472db8795803c1b9be3a33f35959e4dcc2
Reviewed-on: https://go-review.googlesource.com/c/go/+/336889
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
2021-08-17 13:54:10 +00:00