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Commit Graph

2016 Commits

Author SHA1 Message Date
Cherry Mui
1ed30ca537 cmd/compile: correct type of pointer difference on RISCV64
Pointer comparison is lowered to the following on RISCV64

(EqPtr x y) => (SEQZ (SUB <x.Type> x y))

The difference of two pointers (the SUB) should not be pointer
type. Otherwise it can cause the GC to find a bad pointer.

Should fix #51101.

Change-Id: I7e73c2155c36ff403c032981a9aa9cccbfdf0f64
Reviewed-on: https://go-review.googlesource.com/c/go/+/385655
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-02-14 23:08:44 +00:00
Ian Lance Taylor
16b1893600 test: add notinheap test that caused a gofrontend crash
Change-Id: Ie949f2131845f9f9292caff798f6933648779122
Reviewed-on: https://go-review.googlesource.com/c/go/+/385434
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2022-02-13 18:51:07 +00:00
Robert Griesemer
badba359da go/types, types2: better error message for invalid array length
If an invalid array length is just an identifier, mention
"array length" so that it's clear this is an invalid array
declaration and not a (invalid) generic type declaration.

Fixes #51145.

Change-Id: I8878cbb6c7b1277fc0a9a014712ec8d55499c5c7
Reviewed-on: https://go-review.googlesource.com/c/go/+/385255
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-02-11 22:01:05 +00:00
Than McIntosh
867a3d5502 test: apply GO_TEST_TIMEOUT_SCALE scaling to test timeouts
Change run.go to apply the GO_TEST_TIMEOUT_SCALE scaling factor to
test timeouts (mentioned in "-t" clause in test header).

Also with this patch, bump up the timeout for fixedbugs/issue46234.go
from 30 to 45 seconds, to avoid flakes on very slow builders.

Updates #50973.

Change-Id: Icbafa482860e24cc1e72fee53511bcc764d06bf1
Reviewed-on: https://go-review.googlesource.com/c/go/+/382774
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Than McIntosh <thanm@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-02-07 12:32:51 +00:00
Robert Griesemer
e052044d6b go/types, types2: better error messages for comparisons
Refactor Checker.comparison such that its logic is easier to reason
about and so that special cases can be handled more directly.

Use the appropriate operand (of 1st or 2nd operand) for error
reporting (position and type), rather than always using the
first operand.

Use an extra parameter to indicate a switch case
comparison; in this case the error is always reported at
the position of the first operand. (The error messages are
not yet adjusted for switches; see next CL.)

Introduce a new kindString function which is used to print simplified
types in error messages (related to comparisons only): instead of
printing the details of a struct type, we just print "struct" where
the details are not relevant. This matches the 1.17 compiler behavior.

Added a "reportf" parameter to the internal comparable function so we
can report an error cause in addition to the boolean result. Rather
than passing a *string for cause, we pass a function to record the
cause so that we can use the *Checker context for printing (needed
for proper type qualification). This mechanism reports the same
details now as the 1.17 compiler.

Adjusted various tests as needed added new test files.

Fixes #50918.

Change-Id: I1f0e7af22f09db4d31679c667c71a9038a8dc9d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/381964
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-02-04 23:42:25 +00:00
Dan Scales
902dc38212 go/types, types2: tweak missingMethodReason logic to improve message
This makes the error case pointed out in the issue like the current
message in Go 1.17 or -G=0 mode. The priority is to point out the
similar but wrong method name, rather than a difference in type.

Made changes to both cmd/compile/internal/types2 and go/types.
Added in a missing tab in an error message in go/types.

At the same time, removed the extra "at info" on the have lines (and
pointer receiver lines) of error messages, as requested in #50907.

Fixes #50816
Fixes #50907

Change-Id: I04f8151955bdb6192246cbcb59adc1c4b8a2c4e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/381774
Reviewed-by: Robert Griesemer <gri@golang.org>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
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2022-02-01 16:52:46 +00:00
David Chase
b7b44b3173 cmd/compile: remove incorrect arm,arm64 CMP->CMN transformations
These can go wrong when one of the operands is the minimum integer value.

Fixes #50854.

Change-Id: I238fe284f60c7ee5aeb9dc9a18e8b1578cdb77d0
Reviewed-on: https://go-review.googlesource.com/c/go/+/381318
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-01-27 19:52:52 +00:00
Robert Griesemer
1efc5815dd go/types, types2: use orig. compiler error message for a shift error
Slightly better for cases such as string(1 << s).
Leaves type-checker tests alone for now because
there are multiple dozens.

For #45117.

Change-Id: I47b314c713fabe424c2158674bf965416a8a6f5c
Reviewed-on: https://go-review.googlesource.com/c/go/+/379274
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-01-19 20:54:49 +00:00
Cherry Mui
d93ff73ae2 cmd/compile: don't elide extension for LoadReg to FP register on MIPS64
For an extension operation like MOWWreg, if the operand is already
extended, we optimize the second extension out. Usually a LoadReg
of a proper type would come already extended, as a MOVW/MOVWU etc.
instruction does. But for a LoadReg to a floating point register,
the instruction does not do the extension. So we cannot elide the
extension.

Fixes #50671.

Change-Id: Id8991df78d5acdecd3fd6138c558428cbd5f6ba3
Reviewed-on: https://go-review.googlesource.com/c/go/+/379236
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
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Reviewed-by: David Chase <drchase@google.com>
2022-01-19 15:45:58 +00:00
Robert Griesemer
50869f377f go/types, types2: report error for invalid string(1 << s)
For #45114.
Fixes #45117.

Change-Id: I71d6650ae2c4c06952fce19959120f15f13c08a2
Reviewed-on: https://go-review.googlesource.com/c/go/+/379256
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-01-18 23:59:40 +00:00
Russ Cox
cf5d73e8a2 cmd/compile, go/types: restore 'too many return values' error for func with no results
Currently the code handles the case of returning values from
a function with no result parameters as a special case.
Consider this input:

	package p

	func f0_2()            { return 1, 2 }
	func f0_1()            { return 1 }
	func f1_0() int        { return }
	func f1_2() int        { return 1, 2 }
	func f2_0() (int, int) { return }
	func f2_1() (int, int) { return 1 }

The errors are:

	x.go:3:33: no result values expected   <<<
	x.go:4:33: no result values expected   <<<
	x.go:5:26: not enough return values
		have ()
		want (int)
	x.go:6:36: too many return values
		have (number, number)
		want (int)
	x.go:7:26: not enough return values
		have ()
		want (int, int)
	x.go:8:33: not enough return values
		have (number)
		want (int, int)

There are two problems with the current special case emitting the
errors on the marked line:

1. It calls them 'result values' instead of 'return values'.
2. It doesn't show the type being returned, which can be useful to programmers.

Using the general case solves both these problems,
so this CL removes the special case and calls the general case instead.

Now those two errors read:

	x.go:3:33: too many return values
		have (number, number)
		want ()
	x.go:4:33: too many return values
		have (number)
		want ()

Fixes #50653.

Change-Id: If6b47dcece14ed4febb3a2d3d78270d5be1cb24d
Reviewed-on: https://go-review.googlesource.com/c/go/+/379116
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-01-18 21:43:02 +00:00
Matthew Dempsky
1a8b4e05b1 cmd/compile: unique LinkString for renamed, embedded fields
Using type aliases, it's possible to create structs with embedded
fields that have no corresponding type literal notation. However, we
still need to generate a unique name for these types to use for linker
symbols. This CL introduces a new "struct{ Name = Type }" syntax for
use in LinkString formatting to represent these types.

Reattempt at CL 372914, which was rolled back due to race-y
LocalPkg.Lookup call that isn't safe for concurrency.

Fixes #50190.

Change-Id: I0b7fd81e1b0b3199a6afcffde96ade42495ad8d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/378434
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2022-01-13 21:37:29 +00:00
Emmanuel T Odeke
8070e70d64 cmd/compile/types2, go/types: add position for "have" in failed interface satisfaction
With this change, we shall now see:

    *myS does not implement S (wrong type for DoSomething method)
        have DoSomething() (string, error) at ./main.go:9:14
	want DoSomething() (int, error)

instead of previously:

    *myS does not implement S (wrong type for DoSomething method)
        have DoSomething() (string, error)
	want DoSomething() (int, error)

Fixes #42841
Fixes #45813

Change-Id: I66990929e39b0d36f2e91da0d92f60586a9b84e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/373634
Trust: Robert Findley <rfindley@google.com>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2022-01-12 00:01:48 +00:00
Paul E. Murphy
c7fa66179b test: workaround SIGILL on issue11656 on aix
For some reason, aix sometimes executes the bogus function body. This
should never happen as it lives in a no-execute section. It might be
a transient permission blip as the heap grows.

Add a small function to cleanup and synchronize the icache before
jumping to the bogus function to ensure it causes a panic, not SIGILL.

Fixes #44583

Change-Id: Iadca62d82bfb70fc62088705dac42a880a1208fa
Reviewed-on: https://go-review.googlesource.com/c/go/+/377314
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Paul Murphy <murp@ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2022-01-11 15:28:40 +00:00
Dan Scales
90a8482a17 test: re-enable most go/tests that were disabled because of types2 differences
I made the default be that, where there are differences between types2
and -G=0 error messages, we want errorcheck tests to pass types2.
Typically, we can get errorcheck to pass on types2 and -G=0 if they give
the same number of error messages on the same lines, just different
wording. If they give a different number of error messages, then I made
types2 pass. I added an exception list for -G=0 to cover those cases
where -G=0 and types give different numbers of error messages.

Because types2 does not run if there are syntax errors, for several
tests, I had to split the tests into two parts in order to get all the
indicated errors to be reported in types2 (bug228.go, bug388.go,
issue11610.go, issue14520.go)

I tried to preserve the GCCGO labeling correctly (but may have gotten
some wrong). When types2 now matches where a GCCGO error previously
occurred, I transformed GCCGO_ERROR -> ERROR. When types2 no longer
reports an error in a certain place, I transformed ERROR -> GCCGO_ERROR.
When types2 reports an error in a new place, I used GC_ERROR.

The remaining entries in types2Failures are things that I think we
probably still need to fix - either actually missing errors in types2,
or cases where types2 gives worse errors than -G=0.

Change-Id: I7f01e82b322b16094096b67d7ed2bb39b410c34f
Reviewed-on: https://go-review.googlesource.com/c/go/+/372854
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2022-01-11 02:26:58 +00:00
Robert Griesemer
6019a52d4d go/types, types2: better error message when using *interface instead of interface
- detect *interface case and report specific error
- replaced switch with sequence of if's for more clarity
- fixed isInterfacePtr: it applies to all interfaces, incl.
  type parameters
- reviewed/fixed all uses of isInterfacePtr
- adjusted error messages to be consistently of the format
  "type %s is pointer to interface, not interface"

Fixes #48312.

Change-Id: Ic3c8cfcf93ad57ecdb60f6a727cce9e1aa4afb5d
Reviewed-on: https://go-review.googlesource.com/c/go/+/376914
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-01-10 22:48:40 +00:00
Matthew Dempsky
55d10acb72 Revert "cmd/compile: unique LinkString for renamed, embedded fields"
This reverts CL 372914.

Reason for revert: missing synchronization

Change-Id: I7ebb6de082cebb73741d803ff00e3465bbafab81
Reviewed-on: https://go-review.googlesource.com/c/go/+/377379
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Dan Scales <danscales@google.com>
Trust: Matthew Dempsky <mdempsky@google.com>
2022-01-10 20:53:01 +00:00
Matthew Dempsky
933f6685f7 cmd/compile: unique LinkString for renamed, embedded fields
Using type aliases, it's possible to create structs with embedded
fields that have no corresponding type literal notation. However, we
still need to generate a unique name for these types to use for linker
symbols. This CL introduces a new "struct{ Name = Type }" syntax for
use in LinkString formatting to represent these types.

Fixes #50190.

Change-Id: I025ceb09a86e00b7583d3b9885d612f5d6cb44fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/372914
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Trust: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
2022-01-10 17:54:35 +00:00
Dan Scales
f1596d76f4 cmd/compile: fix conv of slice of user-define byte type to string
types2 allows the conversion of a slice of a user-defined byte type B
(not builtin uint8 or byte) to string. But runtime.slicebytetostring
requires a []byte argument, so add in a CONVNOP from []B to []byte if
needed. Same for the conversion of a slice of user-defined rune types to
string.

I made the same change in the transformations of the old typechecker, so
as to keep tcConv() and transformConv() in sync. That fixes the bug for
-G=0 mode as well.

Fixes #23536

Change-Id: Ic79364427f27489187f3f8015bdfbf0769a70d69
Reviewed-on: https://go-review.googlesource.com/c/go/+/376056
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
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2022-01-07 18:40:16 +00:00
Ian Lance Taylor
ed84a8357c test: add test of incorrect gofrontend error
For #50439

Change-Id: Ifad6e6f8de42121c695b5a4dc56e0f6606e2917e
Reviewed-on: https://go-review.googlesource.com/c/go/+/375796
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Trust: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2022-01-06 19:21:12 +00:00
Robert Griesemer
f009910625 cmd/compile/internal/types2: better error message for invalid range clause
Fixes #50372.

Change-Id: I8e4c0020dae42744cce016433e398e0b884bb044
Reviewed-on: https://go-review.googlesource.com/c/go/+/375475
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-01-06 16:22:21 +00:00
Cherry Mui
bc0aba9717 cmd/compile: correct type identity comparison with "any"
The builtin "any" type should only be identical to an unnamed empty
interface type, not a defined empty interface type.

Fixes #50169.

Change-Id: Ie5bb88868497cb795de1fd0276133ba9812edfe4
Reviewed-on: https://go-review.googlesource.com/c/go/+/372217
Trust: Cherry Mui <cherryyz@google.com>
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Dan Scales <danscales@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
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2021-12-15 20:26:03 +00:00
Dan Scales
29483b3dae test: re-enable a bunch of tests with types2
Enable a bunch of types2-related error tests to run successfully, so
they no longer have to be disabled in run.go.

 - directive.go: split it into directive.go and directive2.go, since the
   possible errors are now split across the parser and noder2, so they
   can't all be reported in one file.

 - linkname2.go: similarly, split it into linkname2.go and linkname3.go
   for the same reason.

 - issue16428.go, issue17645.go, issue47201.dir/bo.go: handle slightly
   different wording by types2

 - issue5609.go: handle slight different error (array length must be
   integer vs. array bound too large).

 - float_lit3.go: handle slightly different wording (overflows
   float vs cannot convert to float)

I purposely didn't try to fix tests yet where there are extra or missing
errors on different lines, since that is not easy to make work for both
-G=3 and -G=0. In a later change, will flip to make the types2 version
match correctly, vs. the -G=0 version.

Change-Id: I6079ff258e3b90146335b9995764e3b1b56cda59
Reviewed-on: https://go-review.googlesource.com/c/go/+/368455
Trust: Dan Scales <danscales@google.com>
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TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-12-03 16:24:32 +00:00
Dan Scales
bbe1be5c19 cmd/compile: report channel size errors correctly for -G=3
First, we need to set base.Pos in varDecl() and typeDecl(), so it will
be correct if we need to report type size errors while converting types.
Changed error calls in types/sizes.go to use Errorf, not ErrorfAt, since
we want to use base.Pos (which will set from t.Pos(), if that is
available).

Second, we need to add an extra call CalcSize(t1.Elem()) in the
TCHANARGS case of CalcSize(). We can use CalcSize() rather than
CheckSize(), since we know the top-level recursive type will have been
calculated by the time we process the fake TCHANARGS type. In -G=0 mode,
the size of the channel element has often been calculated because of
some other processing (but not in the case of #49767). But in -G=3 mode,
we just calculate sizes during the single noder2 pass, so we are more
likely to have not gotten to calculating the size of the element yet,
depending on the order of processing of the deferredTypeStack.

Fixes the tests fixedbugs/issue{42058a,42058b}.go that were
disabled for -G=3 mode.

Had to add exceptions in stdlib_test.go for go/types and types2, because
the types2 typechecker does not know about type size limits.

Fixes #49814
Fixes #49771
Updates #49767

Change-Id: I77d058e8ceff68a58c4c386a8cf46799c54b04c3
Reviewed-on: https://go-review.googlesource.com/c/go/+/367955
Trust: Dan Scales <danscales@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>
2021-12-02 20:49:56 +00:00
sivchari
a0506bdf7c test/fixedbugs: fix go directive of issue16008.go
This change modifies issue16008.go
I fixed // go:noinline to //go:noinline

Change-Id: Ic133eec51f0a7c4acf8cb22d25473ca08f1e916c
GitHub-Last-Rev: dd1868f2ca
GitHub-Pull-Request: golang/go#49801
Reviewed-on: https://go-review.googlesource.com/c/go/+/367174
Reviewed-by: Alberto Donizetti <alb.donizetti@gmail.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Trust: Alberto Donizetti <alb.donizetti@gmail.com>
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2021-11-26 13:06:40 +00:00
Robert Griesemer
c25bf0d959 cmd/compile/internal/types2: report types for mismatched call and return statements
Thanks to emmanuel@orijtech.com who wrote the initial version of
this change (CL 354490).

This change is following CL 354490 in idea but also contains various
simplifications, slightly improved printing of signature/type patterns,
adjustments for types2, and some fine-tuning of error positions.

Also adjusted several ERROR regexp patterns.

Fixes #48834.
Fixes #48835.

Change-Id: I31cf20c81753b1dc84836dbe83a39030ceb9db23
Reviewed-on: https://go-review.googlesource.com/c/go/+/364874
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
2021-11-24 20:57:46 +00:00
Robert Griesemer
83bfed916b cmd/compile/internal/types2: print "nil" rather than "untyped nil"
When we have a typed nil, we already say so; thus it is sufficient
to use "nil" in all the other cases.

This is closer to (1.17) compiler behavior. In cases where the
1.17 compiler prints "untyped nil" (e.g., wrong uses of "copy"),
we already print a different message. We can do better in those
cases as well; will be addressed in a separate CL (see #49735).

Fixes #48852.

Change-Id: I9a7a72e0f99185b00f80040c5510a693b1ea80f6
Reviewed-on: https://go-review.googlesource.com/c/go/+/366276
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-11-22 23:51:43 +00:00
Dan Scales
91abe4be0e test: fix -G=0 mode for longtest builder
For -G=3 for test using 'any'.

Change-Id: Ia37ee944a38be4f4330e62ad187f10f2d42e41bd
Reviewed-on: https://go-review.googlesource.com/c/go/+/365839
Trust: Dan Scales <danscales@google.com>
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2021-11-20 08:47:36 +00:00
Matthew Dempsky
b31dda8a2a cmd/compile: handle any as alias like byte and rune
`types.Types[types.TINTER]` is already used for `interface{}`, so we
can conveniently just extend the existing logic that substitutes
`byte` and `rune` with `uint8` and `int32` to also substitute `any`.

Fixes #49665.

Change-Id: I1ab1954699934150aab899b35037d5611c8ca47e
Reviewed-on: https://go-review.googlesource.com/c/go/+/365354
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2021-11-19 22:35:28 +00:00
Keith Randall
d8f7a64519 test: make issue8606b test more robust
Use actual unmapped memory instead of small integers to make
pointers that will fault when accessed.

Fixes #49562

Change-Id: I2c60c97cf80494dd962a07d10cfeaff6a00f4f8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/364914
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2021-11-18 02:53:02 +00:00
Cuong Manh Le
1d004fa201 cmd/compile: emit definition of 'any' only if generic enabled
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
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2021-11-17 04:55:12 +00:00
Than McIntosh
3d7cb23e3d cmd/compile: emit definition of 'any' when compiling runtime
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
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2021-11-17 01:56:19 +00:00
Cuong Manh Le
7f4a946fa2 cmd/compile: prevent irgen crashing for empty local declaration stmt
Updates #47631
Fixes #49611

Change-Id: Ib4a4466038e0d4a9aa9380d7909f29f7d15c6c69
Reviewed-on: https://go-review.googlesource.com/c/go/+/364314
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2021-11-16 15:38:59 +00:00
Robert Findley
92655582d0 cmd/compile/internal/types2: add a check for nil reason in assignableTo
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
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2021-11-15 19:24:28 +00:00
Robert Findley
2fd720b780 test: fix longtest failures on fixedbugs/issue48471.go
This test is failing with -G=0, so specify -G=3.

Change-Id: I4c74707d0a43f8191cb0b156204604458ba85136
Reviewed-on: https://go-review.googlesource.com/c/go/+/363699
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2021-11-13 01:37:51 +00:00
Dan Scales
429d1e0155 cmd/compile: add missing method info for method with correct name except for case
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
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2021-11-12 23:07:14 +00:00
Dan Scales
c8d6ee12d5 cmd/compile: match Go 1.17 compiler error messages more closely
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
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2021-11-12 23:07:01 +00:00
Ian Lance Taylor
3949faf72e test: add test that was miscompiled by gccgo
For #49512

Change-Id: Ic08652a4ec611b27150bf10b1118c1395715e5d0
Reviewed-on: https://go-review.googlesource.com/c/go/+/363156
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2021-11-11 04:02:33 +00:00
Cuong Manh Le
830b393bcd cmd/compile,cmd/go: fix long test builders
CL 361411 improved error message for go version requirement, but forgot
to update the test in cmd/go to match new error message. That causes
longtest builders failed.

This CL changes mod_vendor_goversion.txt to match compiler error, and
limit fixedbugs/issue49368.go to run with -G=3 only.

Updates #49368

Change-Id: I125fe0a8c2a1595066d39c03e97819e7a1274e0a
Reviewed-on: https://go-review.googlesource.com/c/go/+/361963
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2021-11-08 18:54:21 +00:00
Robert Griesemer
3e41b18a46 cmd/compile/internal/types2: use compiler version error when configured for compiler
Fixes #49368.

Change-Id: I7c7575ae8bb6271160747e3f1888b144c3ab24c4
Reviewed-on: https://go-review.googlesource.com/c/go/+/361411
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-11-08 16:14:55 +00:00
hanpro
4f083c7dcf cmd/compile: avoid adding LECall to the entry block when has opendefers
The openDeferRecord always insert vardef/varlive pairs into the entry block, it may destroy the mem chain when LECall's args are writing into the same block. So create a new block before that happens.

Fixes #49282

Change-Id: Ibda6c4a45d960dd412a641f5e02276f663c80785
Reviewed-on: https://go-review.googlesource.com/c/go/+/361410
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2021-11-06 13:10:06 +00:00
Cuong Manh Le
f249fa27a9 cmd/compile: only update source type when processing struct/array
CL 360057 fixed missing update source type in storeArgOrLoad. However,
we should only update the type when processing struct/array. If we
update the type right before calling storeArgOrLoad, we may generate a
value with invalid type, e.g, OpStructSelect with non-struct type.

Fixes #49378

Change-Id: Ib7e10f72f818880f550aae5c9f653db463ce29b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/361594
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2021-11-05 16:35:00 +00:00
Cuong Manh Le
bd49a998bf cmd/compile: fix missing update source type in storeArgOrLoad
After removing trivial wrapper types, the source needs to be updated
with new type, otherwise, it leads to mismatch between field offset and
the source type for selecting struct/array.

Fixes #49249

Change-Id: I26f9440bcb2e78bcf0617afc21d9d40cdbe4aca6
Reviewed-on: https://go-review.googlesource.com/c/go/+/360057
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2021-11-04 02:12:52 +00:00
Cuong Manh Le
f2ff1c6074 cmd/compile: fix rewriting slice literal call argument
When seeing Key:Value expression in slice literal, the compiler only
needs to emit tmp var for the Value, not the whole expression.

Fixes #49240

Change-Id: I7bda3c796a93c0fa1974f7c5930f38025dfa665c
Reviewed-on: https://go-review.googlesource.com/c/go/+/360055
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2021-11-02 16:19:45 +00:00
Dan Scales
8dfb447231 runtime: do not add open defer entry above a started open defer entry
Fix two defer bugs related to adding/removing open defer entries.
The bugs relate to the way that we add and remove open defer entries
from the defer chain. At the point of a panic, when we want to start
processing defer entries in order during the panic process, we need to
add entries to the defer chain for stack frames with open defers, since
the normal fast-defer code does not add these entries. We do this by
calling addOneOpenDeferFrame() at the beginning of each time around the
defer loop in gopanic(). Those defer entries get sorted with other open
and non-open-coded defer frames.

However, the tricky part is that we also need to remove defer entries if
they end not being needed because of a recover (which means we are back
to executing the defer code inline at function exits). But we need
to deal with multiple panics and in-process defers on the stack, so we
can't just remove all open-coded defers from the the defer chain during
a recover.

The fix (and new invariant) is that we should not add any open-coded
defers to the defer chain that are higher up the stack than an open-coded
defer that is in progress. We know that open-coded defer will still be
run until completed, and when it is completed, then a more outer frame
will be added (if there is one). This fits with existing code in gopanic
that only removes open-coded defer entries up to any defer in progress.

These bugs were because of the previous inconsistency between adding and
removing open defer entries, which meant that stale defer entries could
be left on the list, in these unusual cases with both recursive
panics plus multiple independent (non-nested) cases of panic & recover.

The test for #48898 was difficult to add to defer_test.go (while keeping
the failure mode), so I added as a go/test/fixedbug test instead.

Fixes #43920
Updates #43941
Fixes #48898

Change-Id: I593b77033e08c33094315abf8089fbc4cab07376
Reviewed-on: https://go-review.googlesource.com/c/go/+/356011
Trust: Dan Scales <danscales@google.com>
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Reviewed-by: Austin Clements <austin@google.com>
2021-10-29 23:15:00 +00:00
nimelehin
a3bb28e5ff cmd/compile: allow inlining of ORANGE
Updates #14768

Change-Id: I33831f616eae5eeb099033e2b9cf90fa70d6ca86
Reviewed-on: https://go-review.googlesource.com/c/go/+/356869
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2021-10-28 14:25:03 +00:00
zhouguangyuan
a3c4ac0fbc reflect: skip duplicate check in StructOf when the name of a field is "_"
Fixes #49110

Change-Id: I32c2cb26cca067a4a676ce4bbc3e51f1e0cdb259
Reviewed-on: https://go-review.googlesource.com/c/go/+/357959
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2021-10-27 21:35:48 +00:00
Cuong Manh Le
ca5f65d771 cmd/compile: fix generic type handling when crawling inline body
For base generic type that is written to export file, we need to mark
all of its methods, include exported+unexported methods, as reachable,
so they can be available for instantiation if necessary. But markType
only looks for exported methods, thus causing the crash in #49143.

To fix this, we introduce new method p.markGeneric, to mark all methods
of the base generic type.

This issue has happend for a while (maybe since we add generic
import/export during go1.18 cycle), and was un-intentionally "fixed" in
CL 356254, when we agresssively call p.markEmbed(t). CL 357232 fixed
that wrong agressive behavior, thus reproduce the bug on tip.

Fixes #49143

Change-Id: Ie64574a05fffb282e9dcc8739df4378c5b6b0468
Reviewed-on: https://go-review.googlesource.com/c/go/+/358814
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2021-10-27 05:33:58 +00:00
Cuong Manh Le
283d8a3d53 all: use reflect.{Pointer,PointerTo}
Updates #47651
Updates #48665

Change-Id: I69a87b45a5cad7a07fbd855040cd9935cf874554
Reviewed-on: https://go-review.googlesource.com/c/go/+/358454
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2021-10-26 14:24:17 +00:00
wdvxdr
c6e82e5808 cmd/compile: fix inlining labeled switch statements
CL 357649 fixes inlining labeled FOR/RANGE loops,
we should do same translation for inlined SWITCH's label

Fixes #49145

Change-Id: I9a6f365f57e974271a1eb279b38e81f9b5148788
Reviewed-on: https://go-review.googlesource.com/c/go/+/358315
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2021-10-25 16:07:11 +00:00