CL 364377 emitted definition of 'any' when compiling runtime. But 'any'
is only available when generic enabled. Thus emitting its definition
unconditionally causes the compiler crashes.
Updates #49619
Change-Id: I0888ca1cbc7a7df300310a99a344f170636333f2
Reviewed-on: https://go-review.googlesource.com/c/go/+/364614
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
This CL is a clean port of CL 363635 from go/types to types2.
Updates #47916
Change-Id: Ib46758435c31ad9a6a4a63f552503d5afa66b5c0
Reviewed-on: https://go-review.googlesource.com/c/go/+/364534
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This CL is a clean port of CL 363517 from go/types to types2,
with the exception that types_test.go was not removed because
it's still needed to set a types2-specific test flag.
Change-Id: I12177866537c0f95f3fa36fa0f4aa02016609ca9
Reviewed-on: https://go-review.googlesource.com/c/go/+/364494
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This CL is a clean port of CL 363176 from go/types to types2.
It also includes a minor adjustment to a field access in go/types
to match types2 in that respect.
Change-Id: If33fc7e68372b12d61d06b75dd9f7c0715b57bc1
Reviewed-on: https://go-review.googlesource.com/c/go/+/364474
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This CL is a clean port of CL 363175 from go/types to types2.
Change-Id: I149789be07c0ca7ddef7bfaa4ea9507778a63775
Reviewed-on: https://go-review.googlesource.com/c/go/+/364454
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This CL is a clean port of CL 363115 from go/types to types2.
Change-Id: Ic2bd9388c57ffa02e75ab136d952e3ab49eb9018
Reviewed-on: https://go-review.googlesource.com/c/go/+/364394
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This is a port of CL 363114 from go/types to types2 with a temporary
work-around in tparamIndex to avoid a crash with the unified build
and test/typeparam/setsimp.go.
Change-Id: Id4805385f21c95b461911b246fb47ee278a84ac9
Reviewed-on: https://go-review.googlesource.com/c/go/+/364336
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This CL is a mostly clean port of CL 362801 from go/types to types2.
It deviates from go/types in some of the testing code because types2
already had made some of the changes.
It also re-introduces some empty lines that got lost in earlier CLs.
Change-Id: I0bebd68f0880fac61631a5d0c323a9f8ce853ac6
Reviewed-on: https://go-review.googlesource.com/c/go/+/364335
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This CL is a clean port of CL 351338 from go/types to types2.
Change-Id: I7fd0e5a447bf51cb359e71731c2f9b95e3960da6
Reviewed-on: https://go-review.googlesource.com/c/go/+/364536
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This CL is a clean port of CL 351335 from go/types to types2.
Updates #47916
Change-Id: Idc377fb71d480a51d5e93a348f3a880346011974
Reviewed-on: https://go-review.googlesource.com/c/go/+/364535
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Include the predefined type 'any' in the list of other important
predefined types that are emitted when compiling the runtime package
(uintptr, string, etc).
Fixes#49619.
Change-Id: I4a851ba2f302fbc3a425e65daa325c6bf83659da
Reviewed-on: https://go-review.googlesource.com/c/go/+/364377
Trust: Than McIntosh <thanm@google.com>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
This change updates the cmd module's requirement on x/mod and vendors in
the changes.
This pulls in the following changes into our vendored copy of x/mod:
golang.org/cl/351319: module: accept trailing slash in MatchPrefixPattern
golang.org/cl/353749: semver: remove unused err field
golang.org/cl/355630: x/mod: update requirement on x/crypto
golang.org/cl/359412: modfile: rename directory directive to use
Changes have been made in cmd/go renaming all uses of directory to use
and fixing references to functions in x/mod/modfile to account for the
changes in the last of thse CLs.
For #45713
Change-Id: I9121d08f6e6b11838bca50e6cbd756baeeae867b
Reviewed-on: https://go-review.googlesource.com/c/go/+/364114
Trust: Michael Matloob <matloob@golang.org>
Run-TryBot: Michael Matloob <matloob@golang.org>
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Reviewed-by: Bryan C. Mills <bcmills@google.com>
Because any is an a alias, it is naively formatted as interface{} in
error messages. This is a source of verbosity and potential confusion.
We can improve the situation by looking for pointer equality with the
any type. To avoid churn in the importers, do this all at once across
the compiler, go/types, and go/internal/gcimporter. CL 364194 makes the
corresponding change in x/tools/go/internal/gcimporter, allowing the
x/tools trybots to pass.
Fixes#49583
Change-Id: Ib59570937601308483f6273364cc59338f9b8b3b
Reviewed-on: https://go-review.googlesource.com/c/go/+/363974
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Update the vendored x/tools to pick up the fix for #49597, using the
following commands:
go get -d golang.org/x/tools@4adea5033c5c6f39a900d4b963c4b496448b1655
go mod tidy
go mod vendor
Fixes#49597
Change-Id: Ib1bc43aacbdc707b605194012134f048a336e176
Reviewed-on: https://go-review.googlesource.com/c/go/+/363986
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
On a non-nil err, buildinfo.ReadFile will always return a nil
*Buildinfo. In scanFile, we need to return early if that happens.
Fixes#49181
Change-Id: I354348d206ab084804937c6f922eadb61435e7b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/359154
Trust: Alberto Donizetti <alb.donizetti@gmail.com>
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
This CL is clean port of CL 362800 from go/types to types2.
Change-Id: I66443b5a82b3a9c2f608a0fe012fbb099db996f3
Reviewed-on: https://go-review.googlesource.com/c/go/+/364155
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This CL is a clean port of CL 362799 from go/types to types2.
Change-Id: Id670aa4b1ca0b568a79bb6e4855747807dcf00f3
Reviewed-on: https://go-review.googlesource.com/c/go/+/364154
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This is a clean port of CL 362798 from go/types to types2,
with an additional comment adjustment in types2 and go/types.
Change-Id: Ifa3d11f512f794f8ae2b6aca50b625a4a44672de
Reviewed-on: https://go-review.googlesource.com/c/go/+/364135
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
But exclude the test when running unified build for now
(the unified builder's importers are not yet updated to
handle extended interfaces).
Also, fix respective error position.
Fixes#47967.
Change-Id: I4e3d829b5c12001c024b9eefcc27f97b10c1d1e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/363834
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Type constraint satisfaction is interface implementation.
Adjusted a few error messages.
Change-Id: I4266af78e83131a76b1e3e44c847a21de760ac6e
Reviewed-on: https://go-review.googlesource.com/c/go/+/363839
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
Because the underlying type of a type parameter is an interface,
the questions whether *P for a type parameter P has methods or
not is settled: P is also an interface pointers to interfaces
don't have methods.
This allows us to eliminate the now unneccesary test in "implements"
and also allows us to remove a special case for type parameters in
"lookupFieldOrMethod".
Change-Id: I8b218f81584a8e42e75884089a44293365b700df
Reviewed-on: https://go-review.googlesource.com/c/go/+/363838
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
Checker.implements implements the complete interface
"implements" predicate. Use it instead of Checker.satisfies.
This is mostly a refactoring of the code but the constraint
types have already been instatiated with the respective type
arguments as needed before calling "implements".
Future CLs will address the various TODOs.
Change-Id: If530cca36643a561282361348f1526157a7182de
Reviewed-on: https://go-review.googlesource.com/c/go/+/363837
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
Report the error at the first place (which is to say, latest index)
causing the error.
Change-Id: I31cf0a4d243fc66cfab84b7fec98055f4eb60ddf
Reviewed-on: https://go-review.googlesource.com/c/go/+/363671
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
As a result, slightly narrow position tolerance for tests.
Change-Id: I543dc2b7b9a7940b0684067d1961165b2b4812bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/363670
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
Change-Id: Ia09f7b1af0e84858fb73ab7e2592c5c3e983dc0e
Reviewed-on: https://go-review.googlesource.com/c/go/+/363669
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
Most of the time we don't have a type parameter. Avoid using a
closure in that case.
While at it, rename argument from typ to t (to match style in
that file), and clarify the doc string.
Change-Id: Ie62821073f60f353526263f8b380bad9f72d842e
Reviewed-on: https://go-review.googlesource.com/c/go/+/363668
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
Change-Id: Idb02449ef1b06d5f47eeb4a4413e56e2cd5d0d96
Reviewed-on: https://go-review.googlesource.com/c/go/+/363836
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We hope to support this feature one day, but it doesn't work currently.
Issue a nice error message instead of having the compiler crash.
Update #47631
Change-Id: I0359411410acbaf9a5b9dbb988cd933de1bb8438
Reviewed-on: https://go-review.googlesource.com/c/go/+/364054
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
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Reviewed-by: Dan Scales <danscales@google.com>
A recent change to error message formatting was missing a nil check.
Fixes#49592
Change-Id: Ic1843e0277ba75eec0e8e41fe34b59c323d7ea31
Reviewed-on: https://go-review.googlesource.com/c/go/+/364034
Trust: Robert Findley <rfindley@google.com>
Trust: Dan Scales <danscales@google.com>
Trust: Daniel Martí <mvdan@mvdan.cc>
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
The main fix is that we should call ir.SetPos() at the beginning of
(*subster).node.edit function, since that is analogous to the
ir.SetPos() at the beginning of typecheck.typecheck(). It ensures that
transform functions can use base.Pos() with appropriate results, just
like their corresponding tc*() functions do.
A small fix is to make sure that the new nodes creates for dictionary
references have the correct position based on the location of the
function call.
Another small fix is to the use of base.Pos when creating a new selector
expression (including implicit XDOTs) for a method expression in
buildClosure().
Also, I converted the final use of base.Pos in stencil.go to src.NoXPos,
since the nodes created by AddImplicitDots will be checked for their
type, but won't actually be used.
I also needed to add an ir.SetPos() at the beginning of transformCall(),
since transformCall() is called in the modify and dict passes, when we
base.Pos is not being set for each node.
This change fixes all the line numbering problems printed out from
Alessandro's program, except for auto-generated functions (which I think
are fine).
Fixes#49523
Change-Id: I9836a497b7beba25ecafdde653a6c2036a3020d3
Reviewed-on: https://go-review.googlesource.com/c/go/+/363835
Trust: Dan Scales <danscales@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>
If the call to gcWriteBarrier is via PLT, the PLT stub will
clobber R1. Mark R1 clobbered.
For #49386.
Change-Id: I72df5bb3b8d10381fec5c567b15749aaf7d2ad70
Reviewed-on: https://go-review.googlesource.com/c/go/+/363698
Trust: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
We want package names exposed by reflect to be things like
main.F[main.foo], not main.F["".foo].
Fixes#49547
Change-Id: I182411a75d56ce1f64fde847e5b9ee74ce44e00b
Reviewed-on: https://go-review.googlesource.com/c/go/+/363656
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
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The simplified version of under exposed a bug (by crashing):
When a pointer base is used before the pointer is fully set
up, the base is nil. Set the pointer base to Typ[Invalid]
when creating the pointer, and add an extra safety check
into deref. Reviewed all code that creates pointers.
The same error cannot happen with other types because
accessing parts of another type results in an expression
that is not a type, and thus these kids of cycles cannot
happen.
Change-Id: I8332a281a534c094cfbb3623a636960865813ff6
Reviewed-on: https://go-review.googlesource.com/c/go/+/363665
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Most of them are fixed, but some of them have been rewritten to refer
to specific issues.
For #45713
Change-Id: Id24d9bd47afeac089835f7a26e7025332fb6119c
Reviewed-on: https://go-review.googlesource.com/c/go/+/359794
Trust: Michael Matloob <matloob@golang.org>
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Reviewed-by: Bryan C. Mills <bcmills@google.com>
Added/clarified some comments.
Change-Id: Ib08d3343ff08c23cc8880a27a0148d1ff077a80f
Reviewed-on: https://go-review.googlesource.com/c/go/+/363654
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
In the few remaining places where we use asNamed, if the argument
is indeed a *Named, we either don't need to look "inside" it, or
we call under() (which calls Named.underlying() which does resolve);
so there's no need for an implicit resolution (which was done by
asNamed). The only place where we do need to resolve is in lookup,
so added the explicit resolve call in that case.
Change-Id: Iff0a19fde7581e94149e89b9e48157c1981db105
Reviewed-on: https://go-review.googlesource.com/c/go/+/363441
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed the code and simplified slightly. No semantic changes.
Change-Id: Ib785b912fbee97746324af87ac0c14a4bdb69477
Reviewed-on: https://go-review.googlesource.com/c/go/+/363440
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
This CL enables the mode in which the underlying type of
type parameters is the underlying type of their constraints.
Change-Id: Id3471578dab098695dbd1e0429356ebcc9c5e224
Reviewed-on: https://go-review.googlesource.com/c/go/+/363155
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
Until now, the type checker operated with the definition that the
underlying type of a type parameter is itself. This leads to some
inconcistencies and caused us to disallow type declarations where
the RHS is a stand-alone type parameter.
This change implements an alernative definition: the underlying
type of a type parameter is the underlying type of its constraint;
i.e., the underlying type of a type parameter is always an interface
(because constraints must be interfaces). This matches the theory
closely and also resolves some inconsistencies. For example, we
don't need to prohibit stand-alone type parameters on the RHS of
a type declaration (though, for the sake of keeping the tests the
same, we still do in this CL). We also get a clear understanding of
what it would mean to use a type assertion or type switch on a type
parameter (still disabled with this CL). Finally, the declaration
of a type parameter now very closely matches the definition of an
ordinary type.
The main consequence is that the rules for assignment need to be
slightly modified: even though a type parameter is an interface,
we cannot simply assign to it per the rules for interfaces: the
type parameter's type is fixed for the instantiation and we need
to reflect that accordingly when checking for assignability.
This CL does not enable the new mode, it implements it in parallel
to the existing mode; the internal flag tparamIsIface is used to
switch between the modes.
The changes to the code are numerous, but straight-forward: when-
ever we deal with an underlying type that might be a type parameter
(or newly, an interface), we need to act slightly differently. For
the time being this leads to some code duplication because the code
supports both modes.
While some of the code for the new mode seems more complicated
(e.g., when we have an interface, the code checks that it is not
the underlying type of a type parameter), in reality many of the
extra checks are redundant and only present because of an abundance
of caution: interfaces with specific type sets are not permitted as
types for ordinary variables, and so even if we were to hit those
cases w/o excluding type parameters the behavior would be the same.
Runs all tests with tparamIsIface enabled and disabled.
Current setting: disabled.
Change-Id: I7bb6453f4fe2569d92face222058fb4e17b12f25
Reviewed-on: https://go-review.googlesource.com/c/go/+/359016
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
For #45713, #48257
Change-Id: I7e9248f22fe7ab33b151e07cc296d64c194154e2
Reviewed-on: https://go-review.googlesource.com/c/go/+/359534
Trust: Michael Matloob <matloob@golang.org>
Run-TryBot: Michael Matloob <matloob@golang.org>
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Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed all uses of underIs (global function and method) and made
sure we are ok with a nil incoming argument (indicating a type set
with no specific types).
Added a couple of checks where we didn't have them (and somehow
didn't run into a problem yet).
Change-Id: Ifde45a3a80ddf2b1a19c83f79258ad8207dfb09f
Reviewed-on: https://go-review.googlesource.com/c/go/+/363658
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
When being used by the compiler, augment the types2 missing method
message with extra info, if a method is missing, but a method with the
correct name except for case (i.e. equal via string.EqualFold()) is
present. In that case, print out the wanted method and the method that
is present (that has the wrong case).
In the 1.17 compiler, we don't do this case-folding check when assigning
an interface to an interface, so I didn't add that check, but we could
add that.
Fixes#48471
Change-Id: Ic54549c1f66297c9221d979d49c1daa719aa66cd
Reviewed-on: https://go-review.googlesource.com/c/go/+/363437
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
When being used by the compiler, fix up types2 error messages to be more
like Go 1.17 compiler errors. In particular:
- add information about which method is missing when a type is not
assignable/convertible/etc. to an interface.
- add information about any existing method which has the same name,
but wrong type.
- add extra hint in the case that the source or destination type is a
pointer to an interface, rather than an interface.
- add extra hint "need type assertion" in the case that the source is
an interface that is implemented by the destination.
- the following change in the CL stack also adds information about any
existing method with a different name that only differs in case.
Include much of the new logic in a new common function
(*Checker).missingMethodReason().
types2 still adds a little more information in some cases then the Go
1.17 compiler. For example, it typically says "(value of type T)",
rather than "(type T)", where "value" could also be "constant",
"variable", etc.
I kept the types2 error messages almost all the same when types2 is not
used by the compiler. The only change (to reduce amount of compatibility
code) was to change "M method" phrasing in one case to "method M"
phrasing in one error message (which is the phrasing it uses in all
other cases). That is the reason that there are a few small changes in
types2/testdata/check/*.src.
Added new test test/fixedbugs/issue48471.go to test that the added
information is appearing correctly.
Also adjusted the pattern matching in a bunch of other
test/fixedbugs/*.go, now that types2 is producing error messages closer
to Go 1.17. Was able to remove a couple test files from the types2
exception list in run.go.
Updated #48471
Change-Id: I8af1eae6eb8a5541d8ea20b66f494e2e795e1956
Reviewed-on: https://go-review.googlesource.com/c/go/+/363436
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
By default, use workspace modules' go.sum files to check sums. Any
missing sums will still be written to go.work.sum
For #45713
Change-Id: I0f537602523dfec44d423c3c80c7ef396e1397b1
Reviewed-on: https://go-review.googlesource.com/c/go/+/359478
Trust: Michael Matloob <matloob@golang.org>
Run-TryBot: Michael Matloob <matloob@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Because we do not permit a stand-alone type parameter on the RHS of
a type declaration, the underlying type of a (Named) type cannot be
a type parameter. This allows us to simplify some code.
Specifically, when parsing union elements, we don't need to delay
a check for later, which allows further simplifications when computing
type sets.
Change-Id: I4047c609f87ebb194ea8c1bad630a70d255b20cf
Reviewed-on: https://go-review.googlesource.com/c/go/+/363438
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Like OFUNCINST, in case of OXDOT call expression, the arguments need
to be transformed earlier, so any needed CONVIFACE nodes are exposed.
Fixes#49538
Change-Id: I275ddf6f53a9cadc8708e805941cdf7bdffabba9
Reviewed-on: https://go-review.googlesource.com/c/go/+/363554
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
This change sets a timeout of 10 seconds on each
execution of the fuzz target, both during fuzzing
and during minimization. This is not currently
customizable by the user, but issue #48157 tracks
this work.
Deadlocks will be considered non-recoverable errors,
and as such, will not be minimizable.
Fixes#48591
Change-Id: Ic86e8e9e9a0255e7860f7cbf5654e832785d1cbc
Reviewed-on: https://go-review.googlesource.com/c/go/+/363134
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Katie Hockman <katie@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>