mirror of
https://github.com/golang/go
synced 2024-11-26 11:58:07 -07:00
[dev.typeparams] cmd/compile/internal/types2: convert testdata/check tests to type set sytax
Change-Id: I0c2dda10ba7cb40330545fd10fbacb8c84f66a2d Reviewed-on: https://go-review.googlesource.com/c/go/+/324569 Trust: Robert Griesemer <gri@golang.org> Reviewed-by: Robert Findley <rfindley@google.com>
This commit is contained in:
Robert Griesemer
parent
c790964ae4
commit
8cdce85bdf
@ -7,19 +7,19 @@
|
||||
package builtins
|
||||
|
||||
type Bmc interface {
|
||||
type map[rune]string, chan int
|
||||
~map[rune]string | ~chan int
|
||||
}
|
||||
|
||||
type Bms interface {
|
||||
type map[string]int, []int
|
||||
~map[string]int | ~[]int
|
||||
}
|
||||
|
||||
type Bcs interface {
|
||||
type chan bool, []float64
|
||||
~chan bool | ~[]float64
|
||||
}
|
||||
|
||||
type Bss interface {
|
||||
type []int, []string
|
||||
~[]int | ~[]string
|
||||
}
|
||||
|
||||
func _[T any] () {
|
||||
|
||||
@ -57,7 +57,7 @@ func _() {
|
||||
// type with a type list constraint, all of the type argument's types in its
|
||||
// bound, but at least one (!), must be in the type list of the bound of the
|
||||
// corresponding parameterized type's type parameter.
|
||||
type T1[P interface{type uint}] struct{}
|
||||
type T1[P interface{~uint}] struct{}
|
||||
|
||||
func _[P any]() {
|
||||
_ = T1[P /* ERROR P has no type constraints */ ]{}
|
||||
@ -65,7 +65,7 @@ func _[P any]() {
|
||||
|
||||
// This is the original (simplified) program causing the same issue.
|
||||
type Unsigned interface {
|
||||
type uint
|
||||
~uint
|
||||
}
|
||||
|
||||
type T2[U Unsigned] struct {
|
||||
@ -156,7 +156,7 @@ type inf2[T any] struct{ inf2 /* ERROR illegal cycle */ [T] }
|
||||
// predicate disjunction in the implementation was wrong because if a type list
|
||||
// contains both an integer and a floating-point type, the type parameter is
|
||||
// neither an integer or a floating-point number.
|
||||
func convert[T1, T2 interface{type int, uint, float32}](v T1) T2 {
|
||||
func convert[T1, T2 interface{~int | ~uint | ~float32}](v T1) T2 {
|
||||
return T2(v)
|
||||
}
|
||||
|
||||
@ -168,12 +168,12 @@ func _() {
|
||||
// both numeric, or both strings. The implementation had the same problem
|
||||
// with this check as the conversion issue above (issue #39623).
|
||||
|
||||
func issue39623[T interface{type int, string}](x, y T) T {
|
||||
func issue39623[T interface{~int | ~string}](x, y T) T {
|
||||
return x + y
|
||||
}
|
||||
|
||||
// Simplified, from https://go2goplay.golang.org/p/efS6x6s-9NI:
|
||||
func Sum[T interface{type int, string}](s []T) (sum T) {
|
||||
func Sum[T interface{~int | ~string}](s []T) (sum T) {
|
||||
for _, v := range s {
|
||||
sum += v
|
||||
}
|
||||
@ -182,19 +182,19 @@ func Sum[T interface{type int, string}](s []T) (sum T) {
|
||||
|
||||
// Assignability of an unnamed pointer type to a type parameter that
|
||||
// has a matching underlying type.
|
||||
func _[T interface{}, PT interface{type *T}] (x T) PT {
|
||||
func _[T interface{}, PT interface{~*T}] (x T) PT {
|
||||
return &x
|
||||
}
|
||||
|
||||
// Indexing of generic types containing type parameters in their type list:
|
||||
func at[T interface{ type []E }, E interface{}](x T, i int) E {
|
||||
func at[T interface{ ~[]E }, E interface{}](x T, i int) E {
|
||||
return x[i]
|
||||
}
|
||||
|
||||
// A generic type inside a function acts like a named type. Its underlying
|
||||
// type is itself, its "operational type" is defined by the type list in
|
||||
// the tybe bound, if any.
|
||||
func _[T interface{type int}](x T) {
|
||||
func _[T interface{~int}](x T) {
|
||||
type myint int
|
||||
var _ int = int(x)
|
||||
var _ T = 42
|
||||
@ -203,24 +203,24 @@ func _[T interface{type int}](x T) {
|
||||
|
||||
// Indexing a generic type with an array type bound checks length.
|
||||
// (Example by mdempsky@.)
|
||||
func _[T interface { type [10]int }](x T) {
|
||||
func _[T interface { ~[10]int }](x T) {
|
||||
_ = x[9] // ok
|
||||
_ = x[20 /* ERROR out of bounds */ ]
|
||||
}
|
||||
|
||||
// Pointer indirection of a generic type.
|
||||
func _[T interface{ type *int }](p T) int {
|
||||
func _[T interface{ ~*int }](p T) int {
|
||||
return *p
|
||||
}
|
||||
|
||||
// Channel sends and receives on generic types.
|
||||
func _[T interface{ type chan int }](ch T) int {
|
||||
func _[T interface{ ~chan int }](ch T) int {
|
||||
ch <- 0
|
||||
return <- ch
|
||||
}
|
||||
|
||||
// Calling of a generic variable.
|
||||
func _[T interface{ type func() }](f T) {
|
||||
func _[T interface{ ~func() }](f T) {
|
||||
f()
|
||||
go f()
|
||||
}
|
||||
@ -232,7 +232,7 @@ func _[T interface{ type func() }](f T) {
|
||||
// type parameter that was substituted with a defined type.
|
||||
// Test case from an (originally) failing example.
|
||||
|
||||
type sliceOf[E any] interface{ type []E }
|
||||
type sliceOf[E any] interface{ ~[]E }
|
||||
|
||||
func append[T interface{}, S sliceOf[T], T2 interface{ T }](s S, t ...T2) S
|
||||
|
||||
|
||||
@ -9,10 +9,10 @@ import "math"
|
||||
// Numeric is type bound that matches any numeric type.
|
||||
// It would likely be in a constraints package in the standard library.
|
||||
type Numeric interface {
|
||||
type int, int8, int16, int32, int64,
|
||||
uint, uint8, uint16, uint32, uint64, uintptr,
|
||||
float32, float64,
|
||||
complex64, complex128
|
||||
~int | ~int8 | ~int16 | ~int32 | ~int64 |
|
||||
~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr |
|
||||
~float32 | ~float64 |
|
||||
~complex64 | ~complex128
|
||||
}
|
||||
|
||||
func DotProduct[T Numeric](s1, s2 []T) T {
|
||||
@ -42,14 +42,14 @@ func AbsDifference[T NumericAbs[T]](a, b T) T {
|
||||
|
||||
// OrderedNumeric is a type bound that matches numeric types that support the < operator.
|
||||
type OrderedNumeric interface {
|
||||
type int, int8, int16, int32, int64,
|
||||
uint, uint8, uint16, uint32, uint64, uintptr,
|
||||
float32, float64
|
||||
~int | ~int8 | ~int16 | ~int32 | ~int64 |
|
||||
~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr |
|
||||
~float32 | ~float64
|
||||
}
|
||||
|
||||
// Complex is a type bound that matches the two complex types, which do not have a < operator.
|
||||
type Complex interface {
|
||||
type complex64, complex128
|
||||
~complex64 | ~complex128
|
||||
}
|
||||
|
||||
// OrderedAbs is a helper type that defines an Abs method for
|
||||
|
||||
@ -8,28 +8,28 @@ import "strconv"
|
||||
|
||||
type any interface{}
|
||||
|
||||
func f0[A any, B interface{type C}, C interface{type D}, D interface{type A}](A, B, C, D)
|
||||
func f0[A any, B interface{~C}, C interface{~D}, D interface{~A}](A, B, C, D)
|
||||
func _() {
|
||||
f := f0[string]
|
||||
f("a", "b", "c", "d")
|
||||
f0("a", "b", "c", "d")
|
||||
}
|
||||
|
||||
func f1[A any, B interface{type A}](A, B)
|
||||
func f1[A any, B interface{~A}](A, B)
|
||||
func _() {
|
||||
f := f1[int]
|
||||
f(int(0), int(0))
|
||||
f1(int(0), int(0))
|
||||
}
|
||||
|
||||
func f2[A any, B interface{type []A}](A, B)
|
||||
func f2[A any, B interface{~[]A}](A, B)
|
||||
func _() {
|
||||
f := f2[byte]
|
||||
f(byte(0), []byte{})
|
||||
f2(byte(0), []byte{})
|
||||
}
|
||||
|
||||
func f3[A any, B interface{type C}, C interface{type *A}](A, B, C)
|
||||
func f3[A any, B interface{~C}, C interface{~*A}](A, B, C)
|
||||
func _() {
|
||||
f := f3[int]
|
||||
var x int
|
||||
@ -37,7 +37,7 @@ func _() {
|
||||
f3(x, &x, &x)
|
||||
}
|
||||
|
||||
func f4[A any, B interface{type []C}, C interface{type *A}](A, B, C)
|
||||
func f4[A any, B interface{~[]C}, C interface{~*A}](A, B, C)
|
||||
func _() {
|
||||
f := f4[int]
|
||||
var x int
|
||||
@ -45,14 +45,14 @@ func _() {
|
||||
f4(x, []*int{}, &x)
|
||||
}
|
||||
|
||||
func f5[A interface{type struct{b B; c C}}, B any, C interface{type *B}](x B) A
|
||||
func f5[A interface{~struct{b B; c C}}, B any, C interface{~*B}](x B) A
|
||||
func _() {
|
||||
x := f5(1.2)
|
||||
var _ float64 = x.b
|
||||
var _ float64 = *x.c
|
||||
}
|
||||
|
||||
func f6[A any, B interface{type struct{f []A}}](B) A
|
||||
func f6[A any, B interface{~struct{f []A}}](B) A
|
||||
func _() {
|
||||
x := f6(struct{f []string}{})
|
||||
var _ string = x
|
||||
@ -60,11 +60,11 @@ func _() {
|
||||
|
||||
// TODO(gri) Need to flag invalid recursive constraints. At the
|
||||
// moment these cause infinite recursions and stack overflow.
|
||||
// func f7[A interface{type B}, B interface{type A}]()
|
||||
// func f7[A interface{type B}, B interface{~A}]()
|
||||
|
||||
// More realistic examples
|
||||
|
||||
func Double[S interface{ type []E }, E interface{ type int, int8, int16, int32, int64 }](s S) S {
|
||||
func Double[S interface{ ~[]E }, E interface{ ~int | ~int8 | ~int16 | ~int32 | ~int64 }](s S) S {
|
||||
r := make(S, len(s))
|
||||
for i, v := range s {
|
||||
r[i] = v + v
|
||||
@ -80,7 +80,7 @@ var _ = Double(MySlice{1})
|
||||
|
||||
type Setter[B any] interface {
|
||||
Set(string)
|
||||
type *B
|
||||
~*B
|
||||
}
|
||||
|
||||
func FromStrings[T interface{}, PT Setter[T]](s []string) []T {
|
||||
|
||||
@ -148,15 +148,15 @@ func _[T any](r R2[T, int], p *R2[string, T]) {
|
||||
p.pm()
|
||||
}
|
||||
|
||||
// An interface can (explicitly) declare at most one type list.
|
||||
// It is ok to have multiple embedded unions.
|
||||
type _ interface {
|
||||
m0()
|
||||
type int, string, bool
|
||||
type /* ERROR multiple type lists */ float32, float64
|
||||
~int | ~string | ~bool
|
||||
~float32 | ~float64
|
||||
m1()
|
||||
m2()
|
||||
type /* ERROR multiple type lists */ complex64, complex128
|
||||
type /* ERROR multiple type lists */ rune
|
||||
~complex64 | ~complex128
|
||||
~rune
|
||||
}
|
||||
|
||||
// Interface type lists may contain each type at most once.
|
||||
@ -164,23 +164,24 @@ type _ interface {
|
||||
// for them to be all in a single list, and we report the error
|
||||
// as well.)
|
||||
type _ interface {
|
||||
type int, int /* ERROR duplicate term int */
|
||||
type /* ERROR multiple type lists */ int /* ERROR duplicate term int */
|
||||
~int|~int /* ERROR duplicate term int */
|
||||
~int|int /* ERROR duplicate term int */
|
||||
int|int /* ERROR duplicate term int */
|
||||
}
|
||||
|
||||
type _ interface {
|
||||
type struct{f int}, struct{g int}, struct /* ERROR duplicate term */ {f int}
|
||||
~struct{f int} | ~struct{g int} | ~struct /* ERROR duplicate term */ {f int}
|
||||
}
|
||||
|
||||
// Interface type lists can contain any type, incl. *Named types.
|
||||
// Verify that we use the underlying type to compute the operational type.
|
||||
type MyInt int
|
||||
func add1[T interface{type MyInt}](x T) T {
|
||||
func add1[T interface{~MyInt}](x T) T {
|
||||
return x + 1
|
||||
}
|
||||
|
||||
type MyString string
|
||||
func double[T interface{type MyInt, MyString}](x T) T {
|
||||
func double[T interface{~MyInt | ~MyString}](x T) T {
|
||||
return x + x
|
||||
}
|
||||
|
||||
@ -189,15 +190,15 @@ func double[T interface{type MyInt, MyString}](x T) T {
|
||||
// type lists.
|
||||
|
||||
type E0 interface {
|
||||
type int, bool, string
|
||||
~int | ~bool | ~string
|
||||
}
|
||||
|
||||
type E1 interface {
|
||||
type int, float64, string
|
||||
~int | ~float64 | ~string
|
||||
}
|
||||
|
||||
type E2 interface {
|
||||
type float64
|
||||
~float64
|
||||
}
|
||||
|
||||
type I0 interface {
|
||||
@ -246,7 +247,7 @@ var _ = f12[float64]
|
||||
|
||||
type I0_ interface {
|
||||
E0
|
||||
type int
|
||||
~int
|
||||
}
|
||||
|
||||
func f0_[T I0_]()
|
||||
|
||||
@ -52,22 +52,22 @@ func swapswap[A, B any](a A, b B) (A, B) {
|
||||
|
||||
type F[A, B any] func(A, B) (B, A)
|
||||
|
||||
func min[T interface{ type int }](x, y T) T {
|
||||
func min[T interface{ ~int }](x, y T) T {
|
||||
if x < y {
|
||||
return x
|
||||
}
|
||||
return y
|
||||
}
|
||||
|
||||
func _[T interface{type int, float32}](x, y T) bool { return x < y }
|
||||
func _[T interface{~int | ~float32}](x, y T) bool { return x < y }
|
||||
func _[T any](x, y T) bool { return x /* ERROR cannot compare */ < y }
|
||||
func _[T interface{type int, float32, bool}](x, y T) bool { return x /* ERROR cannot compare */ < y }
|
||||
func _[T interface{~int | ~float32 | ~bool}](x, y T) bool { return x /* ERROR cannot compare */ < y }
|
||||
|
||||
func _[T C1[T]](x, y T) bool { return x /* ERROR cannot compare */ < y }
|
||||
func _[T C2[T]](x, y T) bool { return x < y }
|
||||
|
||||
type C1[T any] interface{}
|
||||
type C2[T any] interface{ type int, float32 }
|
||||
type C2[T any] interface{ ~int | ~float32 }
|
||||
|
||||
func new[T any]() *T {
|
||||
var x T
|
||||
@ -95,48 +95,48 @@ var _ = f3[int, rune, bool](1, struct{x rune}{}, nil)
|
||||
// indexing
|
||||
|
||||
func _[T any] (x T, i int) { _ = x /* ERROR "cannot index" */ [i] }
|
||||
func _[T interface{ type int }] (x T, i int) { _ = x /* ERROR "cannot index" */ [i] }
|
||||
func _[T interface{ type string }] (x T, i int) { _ = x[i] }
|
||||
func _[T interface{ type []int }] (x T, i int) { _ = x[i] }
|
||||
func _[T interface{ type [10]int, *[20]int, map[int]int }] (x T, i int) { _ = x[i] }
|
||||
func _[T interface{ type string, []byte }] (x T, i int) { _ = x[i] }
|
||||
func _[T interface{ type []int, [1]rune }] (x T, i int) { _ = x /* ERROR "cannot index" */ [i] }
|
||||
func _[T interface{ type string, []rune }] (x T, i int) { _ = x /* ERROR "cannot index" */ [i] }
|
||||
func _[T interface{ ~int }] (x T, i int) { _ = x /* ERROR "cannot index" */ [i] }
|
||||
func _[T interface{ ~string }] (x T, i int) { _ = x[i] }
|
||||
func _[T interface{ ~[]int }] (x T, i int) { _ = x[i] }
|
||||
func _[T interface{ ~[10]int | ~*[20]int | ~map[int]int }] (x T, i int) { _ = x[i] }
|
||||
func _[T interface{ ~string | ~[]byte }] (x T, i int) { _ = x[i] }
|
||||
func _[T interface{ ~[]int | ~[1]rune }] (x T, i int) { _ = x /* ERROR "cannot index" */ [i] }
|
||||
func _[T interface{ ~string | ~[]rune }] (x T, i int) { _ = x /* ERROR "cannot index" */ [i] }
|
||||
|
||||
// indexing with various combinations of map types in type lists (see issue #42616)
|
||||
func _[T interface{ type []E, map[int]E }, E any](x T, i int) { _ = x[i] }
|
||||
func _[T interface{ type []E }, E any](x T, i int) { _ = &x[i] }
|
||||
func _[T interface{ type map[int]E }, E any](x T, i int) { _, _ = x[i] } // comma-ok permitted
|
||||
func _[T interface{ type []E, map[int]E }, E any](x T, i int) { _ = &x /* ERROR cannot take address */ [i] }
|
||||
func _[T interface{ type []E, map[int]E, map[uint]E }, E any](x T, i int) { _ = x /* ERROR cannot index */ [i] } // different map element types
|
||||
func _[T interface{ type []E, map[string]E }, E any](x T, i int) { _ = x[i /* ERROR cannot use i */ ] }
|
||||
func _[T interface{ ~[]E | ~map[int]E }, E any](x T, i int) { _ = x[i] }
|
||||
func _[T interface{ ~[]E }, E any](x T, i int) { _ = &x[i] }
|
||||
func _[T interface{ ~map[int]E }, E any](x T, i int) { _, _ = x[i] } // comma-ok permitted
|
||||
func _[T interface{ ~[]E | ~map[int]E }, E any](x T, i int) { _ = &x /* ERROR cannot take address */ [i] }
|
||||
func _[T interface{ ~[]E | ~map[int]E | ~map[uint]E }, E any](x T, i int) { _ = x /* ERROR cannot index */ [i] } // different map element types
|
||||
func _[T interface{ ~[]E | ~map[string]E }, E any](x T, i int) { _ = x[i /* ERROR cannot use i */ ] }
|
||||
|
||||
// slicing
|
||||
// TODO(gri) implement this
|
||||
|
||||
func _[T interface{ type string }] (x T, i, j, k int) { _ = x /* ERROR invalid operation */ [i:j:k] }
|
||||
func _[T interface{ ~string }] (x T, i, j, k int) { _ = x /* ERROR invalid operation */ [i:j:k] }
|
||||
|
||||
// len/cap built-ins
|
||||
|
||||
func _[T any](x T) { _ = len(x /* ERROR invalid argument */ ) }
|
||||
func _[T interface{ type int }](x T) { _ = len(x /* ERROR invalid argument */ ) }
|
||||
func _[T interface{ type string, []byte, int }](x T) { _ = len(x /* ERROR invalid argument */ ) }
|
||||
func _[T interface{ type string }](x T) { _ = len(x) }
|
||||
func _[T interface{ type [10]int }](x T) { _ = len(x) }
|
||||
func _[T interface{ type []byte }](x T) { _ = len(x) }
|
||||
func _[T interface{ type map[int]int }](x T) { _ = len(x) }
|
||||
func _[T interface{ type chan int }](x T) { _ = len(x) }
|
||||
func _[T interface{ type string, []byte, chan int }](x T) { _ = len(x) }
|
||||
func _[T interface{ ~int }](x T) { _ = len(x /* ERROR invalid argument */ ) }
|
||||
func _[T interface{ ~string | ~[]byte | ~int }](x T) { _ = len(x /* ERROR invalid argument */ ) }
|
||||
func _[T interface{ ~string }](x T) { _ = len(x) }
|
||||
func _[T interface{ ~[10]int }](x T) { _ = len(x) }
|
||||
func _[T interface{ ~[]byte }](x T) { _ = len(x) }
|
||||
func _[T interface{ ~map[int]int }](x T) { _ = len(x) }
|
||||
func _[T interface{ ~chan int }](x T) { _ = len(x) }
|
||||
func _[T interface{ ~string | ~[]byte | ~chan int }](x T) { _ = len(x) }
|
||||
|
||||
func _[T any](x T) { _ = cap(x /* ERROR invalid argument */ ) }
|
||||
func _[T interface{ type int }](x T) { _ = cap(x /* ERROR invalid argument */ ) }
|
||||
func _[T interface{ type string, []byte, int }](x T) { _ = cap(x /* ERROR invalid argument */ ) }
|
||||
func _[T interface{ type string }](x T) { _ = cap(x /* ERROR invalid argument */ ) }
|
||||
func _[T interface{ type [10]int }](x T) { _ = cap(x) }
|
||||
func _[T interface{ type []byte }](x T) { _ = cap(x) }
|
||||
func _[T interface{ type map[int]int }](x T) { _ = cap(x /* ERROR invalid argument */ ) }
|
||||
func _[T interface{ type chan int }](x T) { _ = cap(x) }
|
||||
func _[T interface{ type []byte, chan int }](x T) { _ = cap(x) }
|
||||
func _[T interface{ ~int }](x T) { _ = cap(x /* ERROR invalid argument */ ) }
|
||||
func _[T interface{ ~string | ~[]byte | ~int }](x T) { _ = cap(x /* ERROR invalid argument */ ) }
|
||||
func _[T interface{ ~string }](x T) { _ = cap(x /* ERROR invalid argument */ ) }
|
||||
func _[T interface{ ~[10]int }](x T) { _ = cap(x) }
|
||||
func _[T interface{ ~[]byte }](x T) { _ = cap(x) }
|
||||
func _[T interface{ ~map[int]int }](x T) { _ = cap(x /* ERROR invalid argument */ ) }
|
||||
func _[T interface{ ~chan int }](x T) { _ = cap(x) }
|
||||
func _[T interface{ ~[]byte | ~chan int }](x T) { _ = cap(x) }
|
||||
|
||||
// range iteration
|
||||
|
||||
@ -144,7 +144,7 @@ func _[T interface{}](x T) {
|
||||
for range x /* ERROR cannot range */ {}
|
||||
}
|
||||
|
||||
func _[T interface{ type string, []string }](x T) {
|
||||
func _[T interface{ ~string | ~[]string }](x T) {
|
||||
for range x {}
|
||||
for i := range x { _ = i }
|
||||
for i, _ := range x { _ = i }
|
||||
@ -156,23 +156,23 @@ func _[T interface{ type string, []string }](x T) {
|
||||
}
|
||||
|
||||
|
||||
func _[T interface{ type string, []rune, map[int]rune }](x T) {
|
||||
func _[T interface{ ~string | ~[]rune | ~map[int]rune }](x T) {
|
||||
for _, e := range x { _ = e }
|
||||
for i, e := range x { _ = i; _ = e }
|
||||
}
|
||||
|
||||
func _[T interface{ type string, []rune, map[string]rune }](x T) {
|
||||
func _[T interface{ ~string | ~[]rune | ~map[string]rune }](x T) {
|
||||
for _, e := range x { _ = e }
|
||||
for i, e := range x /* ERROR must have the same key type */ { _ = e }
|
||||
}
|
||||
|
||||
func _[T interface{ type string, chan int }](x T) {
|
||||
func _[T interface{ ~string | ~chan int }](x T) {
|
||||
for range x {}
|
||||
for i := range x { _ = i }
|
||||
for i, _ := range x { _ = i } // TODO(gri) should get an error here: channels only return one value
|
||||
}
|
||||
|
||||
func _[T interface{ type string, chan<-int }](x T) {
|
||||
func _[T interface{ ~string | ~chan<-int }](x T) {
|
||||
for i := range x /* ERROR send-only channel */ { _ = i }
|
||||
}
|
||||
|
||||
@ -400,7 +400,7 @@ func _[T any](x T) {
|
||||
}
|
||||
}
|
||||
|
||||
func _[T interface{type int}](x T) {
|
||||
func _[T interface{~int}](x T) {
|
||||
_ = x /* ERROR not an interface */ .(int)
|
||||
switch x /* ERROR not an interface */ .(type) {
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user