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Author SHA1 Message Date
Robert Griesemer
8f19394b62 cmd/compile/internal/types2: refactor untyped conversions 
Based on https://golang.org/cl/284256 for go/types.
Brings this code more in line with go/types.

Adjusted various tests to match new error messages which
generally are now better: for assignment errors, instead
of a generic "cannot convert" we now say "cannot use"
followed by a clearer reason as to why not.

Major differences to go/types with respect to the changed
files:

- Some of the new code now returns error codes, but they
  are only used internally for now, and not reported with
  errors.

- go/types does not "convert" untyped nil values to target
  types, but here we do. This is unchanged from how types2
  handled this before this CL.

Change-Id: If45336d7ee679ece100f6d9d9f291a6ea55004d8
Reviewed-on: https://go-review.googlesource.com/c/go/+/302757
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
 2021-03-23 05:11:09 +00:00
Robert Griesemer
53c4c17b09 [dev.typeparams] all: merge dev.regabi into dev.typeparams 
The files below had conflicts that required manual resolution.
The unresolved conflict in noder.go was just in the import
declaration (trivial). All the other conflicts are in tests
where the ERROR regex patterns changed to accomodate gccgo
error messages (incoming from dev.regabi), and to accomodate
types2 in dev.typeparams. They were resolved by accepting the
dev.regabi changes (so as not to lose them) and then by re-
applying whatever changes needed to make them pass with types2.
Finally, the new test mainsig.go was excluded from run.go when
using types2 due to issue #43308.

	src/cmd/compile/internal/gc/noder.go
	test/fixedbugs/bug13343.go
	test/fixedbugs/bug462.go
	test/fixedbugs/issue10975.go
	test/fixedbugs/issue11326.go
	test/fixedbugs/issue11361.go
	test/fixedbugs/issue11371.go
	test/fixedbugs/issue11674.go
	test/fixedbugs/issue13365.go
	test/fixedbugs/issue13471.go
	test/fixedbugs/issue14136.go
	test/fixedbugs/issue14321.go
	test/fixedbugs/issue14729.go
	test/fixedbugs/issue15898.go
	test/fixedbugs/issue16439.go
	test/fixedbugs/issue17588.go
	test/fixedbugs/issue19323.go
	test/fixedbugs/issue19482.go
	test/fixedbugs/issue19880.go
	test/fixedbugs/issue20185.go
	test/fixedbugs/issue20227.go
	test/fixedbugs/issue20415.go
	test/fixedbugs/issue20749.go
	test/fixedbugs/issue22794.go
	test/fixedbugs/issue22822.go
	test/fixedbugs/issue22921.go
	test/fixedbugs/issue23823.go
	test/fixedbugs/issue25727.go
	test/fixedbugs/issue26616.go
	test/fixedbugs/issue28079c.go
	test/fixedbugs/issue28450.go
	test/fixedbugs/issue30085.go
	test/fixedbugs/issue30087.go
	test/fixedbugs/issue35291.go
	test/fixedbugs/issue38745.go
	test/fixedbugs/issue41247.go
	test/fixedbugs/issue41440.go
	test/fixedbugs/issue41500.go
	test/fixedbugs/issue4215.go
	test/fixedbugs/issue6402.go
	test/fixedbugs/issue6772.go
	test/fixedbugs/issue7129.go
	test/fixedbugs/issue7150.go
	test/fixedbugs/issue7153.go
	test/fixedbugs/issue7310.go
	test/fixedbugs/issue8183.go
	test/fixedbugs/issue8385.go
	test/fixedbugs/issue8438.go
	test/fixedbugs/issue8440.go
	test/fixedbugs/issue8507.go
	test/fixedbugs/issue9370.go
	test/fixedbugs/issue9521.go

Change-Id: I26e6e326fde6e3fca5400711a253834d710ab7f4
 2020-12-22 17:50:13 +00:00
Ian Lance Taylor
5a25a3fd1d test: recognize gofrontend error messages 
fixedbugs/issue26416.go:24:16: error: unknown field ‘t1f1’ in ‘t2’
fixedbugs/issue26416.go:25:16: error: unknown field ‘t1f2’ in ‘t3’
fixedbugs/issue26416.go:26:16: error: unknown field ‘t2f1’ in ‘t3’

fixedbugs/issue26616.go:15:9: error: single variable set to multiple-value function call
fixedbugs/issue26616.go:9:5: error: incompatible type in initialization (multiple-value function call in single-value context)
fixedbugs/issue26616.go:12:13: error: incompatible type in initialization (multiple-value function call in single-value context)
fixedbugs/issue26616.go:13:13: error: incompatible type in initialization (multiple-value function call in single-value context)
fixedbugs/issue26616.go:15:9: error: incompatible type in initialization (multiple-value function call in single-value context)
fixedbugs/issue26616.go:14:11: error: incompatible types in assignment (multiple-value function call in single-value context)

fixedbugs/issue26855.go:23:12: error: incompatible type for field 1 in struct construction
fixedbugs/issue26855.go:27:12: error: incompatible type for field 1 in struct construction

fixedbugs/issue25958.go:14:18: error: expected ‘<-’ or ‘=’
fixedbugs/issue25958.go:15:35: error: expected ‘<-’ or ‘=’

fixedbugs/issue28079b.go:13:9: error: array bound is not constant
fixedbugs/issue28079b.go:16:22: error: invalid context-determined non-integer type for left operand of shift

fixedbugs/issue28079c.go:14:22: error: invalid context-determined non-integer type for left operand of shift

fixedbugs/issue28450.go:9:19: error: ‘...’ only permits one name
fixedbugs/issue28450.go:10:18: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:11:16: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:11:24: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:13:25: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:15:19: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:16:21: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:16:31: error: ‘...’ must be last parameter

fixedbugs/issue28268.go:20:1: error: method ‘E’ redeclares struct field name
fixedbugs/issue28268.go:19:1: error: method ‘b’ redeclares struct field name

fixedbugs/issue27356.go:14:14: error: expected function
fixedbugs/issue27356.go:18:9: error: expected function

fixedbugs/issue29855.go:13:11: error: unknown field ‘Name’ in ‘T’

fixedbugs/issue27938.go:14:15: error: expected package
fixedbugs/issue27938.go:18:13: error: expected package
fixedbugs/issue27938.go:22:13: error: expected package
fixedbugs/issue27938.go:22:9: error: expected signature or type name

fixedbugs/issue29870b.go:13:9: error: ‘x’ declared but not used

fixedbugs/issue30085.go:10:18: error: wrong number of initializations
fixedbugs/issue30085.go:11:21: error: wrong number of initializations

fixedbugs/issue30087.go:10:18: error: wrong number of initializations
fixedbugs/issue30087.go:11:11: error: number of variables does not match number of values
fixedbugs/issue30087.go:12:9: error: wrong number of initializations
fixedbugs/issue30087.go:13:9: error: wrong number of initializations

fixedbugs/issue28926.go:16:14: error: use of undefined type ‘G’
fixedbugs/issue28926.go:18:14: error: use of undefined type ‘E’
fixedbugs/issue28926.go:22:24: error: use of undefined type ‘T’

fixedbugs/issue30722.go:13:13: error: invalid numeric literal
fixedbugs/issue30722.go:14:13: error: invalid numeric literal
fixedbugs/issue30722.go:15:13: error: invalid numeric literal

fixedbugs/issue33308.go:12:19: error: invalid context-determined non-integer type for left operand of shift

fixedbugs/issue33386.go:16:9: error: expected operand
fixedbugs/issue33386.go:22:9: error: expected operand
fixedbugs/issue33386.go:26:17: error: expected operand
fixedbugs/issue33386.go:27:18: error: expected operand
fixedbugs/issue33386.go:28:29: error: expected operand
fixedbugs/issue33386.go:15:17: error: reference to undefined name ‘send’
fixedbugs/issue33386.go:27:13: error: reference to undefined name ‘a’
fixedbugs/issue33386.go:21:19: error: value computed is not used

fixedbugs/issue33460.go:34:10: error: duplicate key in map literal
fixedbugs/issue33460.go:21:9: error: duplicate case in switch
fixedbugs/issue33460.go:24:9: error: duplicate case in switch
fixedbugs/issue33460.go:25:9: error: duplicate case in switch

fixedbugs/issue32723.go:12:14: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:13:13: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:16:16: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:17:16: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:18:15: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:21:15: error: invalid comparison of non-ordered type

fixedbugs/issue35291.go:13:9: error: duplicate value for index 1

fixedbugs/issue38745.go:12:12: error: reference to undefined field or method ‘M’
fixedbugs/issue38745.go:13:16: error: reference to undefined field or method ‘M’
fixedbugs/issue38745.go:17:19: error: reference to undefined field or method ‘M’
fixedbugs/issue38745.go:17:9: error: not enough arguments to return

fixedbugs/issue41500.go:16:22: error: incompatible types in binary expression
fixedbugs/issue41500.go:17:26: error: incompatible types in binary expression
fixedbugs/issue41500.go:18:22: error: incompatible types in binary expression
fixedbugs/issue41500.go:19:26: error: incompatible types in binary expression

fixedbugs/issue41575.go:23:6: error: invalid recursive type
fixedbugs/issue41575.go:9:6: error: invalid recursive type ‘T1’
fixedbugs/issue41575.go:13:6: error: invalid recursive type ‘T2’
fixedbugs/issue41575.go:17:6: error: invalid recursive type ‘a’
fixedbugs/issue41575.go:18:6: error: invalid recursive type ‘b’
fixedbugs/issue41575.go:19:6: error: invalid recursive type ‘c’
fixedbugs/issue41575.go:25:6: error: invalid recursive type ‘g’
fixedbugs/issue41575.go:32:6: error: invalid recursive type ‘x’
fixedbugs/issue41575.go:33:6: error: invalid recursive type ‘y’

fixedbugs/issue4215.go:10:9: error: not enough arguments to return
fixedbugs/issue4215.go:14:9: error: return with value in function with no return type
fixedbugs/issue4215.go:19:17: error: not enough arguments to return
fixedbugs/issue4215.go:21:9: error: not enough arguments to return
fixedbugs/issue4215.go:27:17: error: not enough arguments to return
fixedbugs/issue4215.go:29:17: error: too many values in return statement
fixedbugs/issue4215.go:31:17: error: not enough arguments to return
fixedbugs/issue4215.go:43:17: error: not enough arguments to return
fixedbugs/issue4215.go:46:17: error: not enough arguments to return
fixedbugs/issue4215.go:48:9: error: too many values in return statement
fixedbugs/issue4215.go:52:9: error: too many values in return statement

fixedbugs/issue41247.go:10:16: error: incompatible type for return value 1

fixedbugs/issue41440.go:13:9: error: too many arguments

fixedbugs/issue6772.go:10:16: error: ‘a’ repeated on left side of :=
fixedbugs/issue6772.go:17:16: error: ‘a’ repeated on left side of :=

fixedbugs/issue6402.go:12:16: error: incompatible type for return value 1

fixedbugs/issue6403.go:13:23: error: reference to undefined identifier ‘syscall.X’
fixedbugs/issue6403.go:14:15: error: reference to undefined name ‘voidpkg’

fixedbugs/issue7746.go:24:20: error: constant multiplication overflow

fixedbugs/issue7760.go:15:7: error: invalid constant type
fixedbugs/issue7760.go:16:7: error: invalid constant type
fixedbugs/issue7760.go:18:7: error: invalid constant type
fixedbugs/issue7760.go:19:7: error: invalid constant type
fixedbugs/issue7760.go:21:11: error: expression is not constant
fixedbugs/issue7760.go:22:11: error: expression is not constant
fixedbugs/issue7760.go:24:7: error: invalid constant type
fixedbugs/issue7760.go:25:7: error: invalid constant type

fixedbugs/issue7129.go:18:11: error: argument 1 has incompatible type (cannot use type bool as type int)
fixedbugs/issue7129.go:19:11: error: argument 1 has incompatible type (cannot use type bool as type int)
fixedbugs/issue7129.go:20:11: error: argument 1 has incompatible type (cannot use type bool as type int)
fixedbugs/issue7129.go:20:17: error: argument 2 has incompatible type (cannot use type bool as type int)

fixedbugs/issue7150.go:12:20: error: index expression is negative
fixedbugs/issue7150.go:13:13: error: some element keys in composite literal are out of range
fixedbugs/issue7150.go:14:13: error: some element keys in composite literal are out of range
fixedbugs/issue7150.go:15:13: error: some element keys in composite literal are out of range
fixedbugs/issue7150.go:16:13: error: some element keys in composite literal are out of range

fixedbugs/issue7675.go:16:11: error: argument 1 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:16:24: error: argument 3 has incompatible type (cannot use type string as type float64)
fixedbugs/issue7675.go:16:9: error: not enough arguments
fixedbugs/issue7675.go:16:14: error: floating-point constant truncated to integer
fixedbugs/issue7675.go:18:11: error: argument 1 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:18:24: error: argument 3 has incompatible type (cannot use type string as type float64)
fixedbugs/issue7675.go:18:28: error: argument 4 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:18:9: error: too many arguments
fixedbugs/issue7675.go:18:14: error: floating-point constant truncated to integer
fixedbugs/issue7675.go:19:11: error: argument 1 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:19:9: error: not enough arguments
fixedbugs/issue7675.go:19:14: error: floating-point constant truncated to integer
fixedbugs/issue7675.go:21:11: error: argument 1 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:21:19: error: argument 3 has incompatible type
fixedbugs/issue7675.go:21:14: error: floating-point constant truncated to integer
fixedbugs/issue7675.go:23:14: error: floating-point constant truncated to integer

fixedbugs/issue7153.go:11:15: error: reference to undefined name ‘a’
fixedbugs/issue7153.go:11:18: error: incompatible type for element 1 in composite literal
fixedbugs/issue7153.go:11:24: error: incompatible type for element 2 in composite literal

fixedbugs/issue7310.go:12:13: error: left argument must be a slice
fixedbugs/issue7310.go:13:13: error: second argument must be slice or string
fixedbugs/issue7310.go:14:15: error: incompatible types in binary expression

fixedbugs/issue6964.go:10:13: error: invalid type conversion (cannot use type complex128 as type string)

fixedbugs/issue7538a.go:14:9: error: reference to undefined label ‘_’

fixedbugs/issue8311.go:14:9: error: increment or decrement of non-numeric type

fixedbugs/issue8507.go:12:6: error: invalid recursive type ‘T’

fixedbugs/issue9521.go:16:20: error: argument 2 has incompatible type
fixedbugs/issue9521.go:17:20: error: argument 2 has incompatible type (cannot use type float64 as type int)

fixedbugs/issue8385.go:30:19: error: argument 1 has incompatible type (type has no methods)
fixedbugs/issue8385.go:30:14: error: not enough arguments
fixedbugs/issue8385.go:35:9: error: not enough arguments
fixedbugs/issue8385.go:36:9: error: not enough arguments
fixedbugs/issue8385.go:37:10: error: not enough arguments
fixedbugs/issue8385.go:38:10: error: not enough arguments
fixedbugs/issue8385.go:39:10: error: not enough arguments
fixedbugs/issue8385.go:40:10: error: not enough arguments
fixedbugs/issue8385.go:41:13: error: not enough arguments

fixedbugs/issue8438.go:13:23: error: incompatible type for element 1 in composite literal
fixedbugs/issue8438.go:14:22: error: incompatible type for element 1 in composite literal
fixedbugs/issue8438.go:15:23: error: incompatible type for element 1 in composite literal

fixedbugs/issue8440.go:10:9: error: reference to undefined name ‘n’

Change-Id: I5707aec7d3c9178c4f4d794d4827fc907b52efb3
Reviewed-on: https://go-review.googlesource.com/c/go/+/278032
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
 2020-12-15 02:35:59 +00:00
Robert Griesemer
810957b155 [dev.typeparams] cmd/compile/internal/types2: adjusted array error message for compiler 
Also: Triaged/adjusted some more test/fixedbugs tests.
Change-Id: Idaba1875273d6da6ef82dd8de8edd8daa885d32c
Reviewed-on: https://go-review.googlesource.com/c/go/+/276472
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
 2020-12-09 23:54:59 +00:00
Cuong Manh Le
efd395f9fb cmd/compile: make duplicate index error distinguish arrays and slices 
Fixes #35291

Change-Id: I11ae367b6e972cd9e7a22bbc2cb23d32f4d72b98
Reviewed-on: https://go-review.googlesource.com/c/go/+/204617
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
 2019-11-01 01:51:26 +00:00
Matthew Dempsky
581526ce96 cmd/compile: rewrite untyped constant conversion logic 
This CL detangles the hairy mess that was convlit+defaultlit. In
particular, it makes the following changes:

1. convlit1 now follows the standard typecheck behavior of setting
"n.Type = nil" if there's an error. Notably, this means for a lot of
test cases, we now avoid reporting useless follow-on error messages.
For example, after reporting that "1 << s + 1.0" has an invalid shift,
we no longer also report that it can't be assigned to string.

2. Previously, assignconvfn had some extra logic for trying to
suppress errors from convlit/defaultlit so that it could provide its
own errors with better context information. Instead, this extra
context information is now passed down into convlit1 directly.

3. Relatedly, this CL also removes redundant calls to defaultlit prior
to assignconv. As a consequence, when an expression doesn't make sense
for a particular assignment (e.g., assigning an untyped string to an
integer), the error messages now say "untyped string" instead of just
"string". This is more consistent with go/types behavior.

4. defaultlit2 is now smarter about only trying to convert pairs of
untyped constants when it's likely to succeed. This allows us to
report better error messages for things like 3+"x"; instead of "cannot
convert 3 to string" we now report "mismatched types untyped number
and untyped string".

Passes toolstash-check.

Change-Id: I26822a02dc35855bd0ac774907b1cf5737e91882
Reviewed-on: https://go-review.googlesource.com/c/go/+/187657
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
 2019-09-06 23:15:48 +00:00
Robert Griesemer
c7a3403140 cmd/compile: clearer error for invalid array/slice literal elements 
Fixes #13365.

Change-Id: I5a447ff806dbbb11c8c75e2b5cfa7fd4a845fb92
Reviewed-on: https://go-review.googlesource.com/17206
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
 2015-11-25 19:49:38 +00:00
Jan Ziak
2ca99505f6 cmd/gc: suppress array index error caused by a previously reported error 
Fixes #7153

LGTM=rsc
R=rsc
CC=golang-codereviews
https://golang.org/cl/82180043
 2014-03-29 15:45:40 +01:00