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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// This file tests built-in calls on generic types.
package builtins
import "unsafe"
// close
type C0 interface{ int }
type C1 interface{ chan int }
type C2 interface{ chan int | <-chan int }
type C3 interface{ chan int | chan float32 }
type C4 interface{ chan int | chan<- int }
type C5[T any] interface{ ~chan T | chan<- T }
func _[T any](ch T) {
close(ch /* ERROR cannot close non-channel */)
}
func _[T C0](ch T) {
close(ch /* ERROR cannot close non-channel */)
}
func _[T C1](ch T) {
close(ch)
}
func _[T C2](ch T) {
close(ch /* ERROR cannot close receive-only channel */)
}
func _[T C3](ch T) {
close(ch)
}
func _[T C4](ch T) {
close(ch)
}
func _[T C5[X], X any](ch T) {
close(ch)
}
// delete
type M0 interface{ int }
type M1 interface{ map[string]int }
type M2 interface { map[string]int | map[string]float64 }
type M3 interface{ map[string]int | map[rune]int }
type M4[K comparable, V any] interface{ map[K]V | map[rune]V }
func _[T any](m T) {
delete(m /* ERROR not a map */, "foo")
}
func _[T M0](m T) {
delete(m /* ERROR not a map */, "foo")
}
func _[T M1](m T) {
delete(m, "foo")
}
func _[T M2](m T) {
delete(m, "foo")
delete(m, 0 /* ERROR cannot use .* as string */)
}
func _[T M3](m T) {
delete(m /* ERROR must have identical key types */, "foo")
}
func _[T M4[rune, V], V any](m T) {
delete(m, 'k')
}
func _[T M4[K, V], K comparable, V any](m T) {
delete(m /* ERROR must have identical key types */, "foo")
}
// make
type Bmc interface {
~map[rune]string | ~chan int
}
type Bms interface {
~map[string]int | ~[]int
}
type Bcs interface {
~chan bool | ~[]float64
}
type Bss interface {
~[]int | ~[]string
}
func _[T any]() {
_ = make(T /* ERROR invalid argument */)
_ = make(T /* ERROR invalid argument */, 10)
_ = make(T /* ERROR invalid argument */, 10, 20)
}
func _[T Bmc]() {
_ = make(T)
_ = make(T, 10)
_ = make /* ERROR expects 1 or 2 arguments */ (T, 10, 20)
}
func _[T Bms]() {
_ = make /* ERROR expects 2 arguments */ (T)
_ = make(T, 10)
_ = make /* ERROR expects 2 arguments */ (T, 10, 20)
}
func _[T Bcs]() {
_ = make /* ERROR expects 2 arguments */ (T)
_ = make(T, 10)
_ = make /* ERROR expects 2 arguments */ (T, 10, 20)
}
func _[T Bss]() {
_ = make /* ERROR expects 2 or 3 arguments */ (T)
_ = make(T, 10)
_ = make(T, 10, 20)
}
// unsafe.Alignof
func _[T comparable]() {
var (
b int64
a [10]T
s struct{ f T }
p *T
l []T
f func(T)
i interface{ m() T }
c chan T
m map[T]T
t T
)
const bb = unsafe.Alignof(b)
assert(bb == 8)
const _ = unsafe /* ERROR not constant */ .Alignof(a)
const _ = unsafe /* ERROR not constant */ .Alignof(s)
const pp = unsafe.Alignof(p)
assert(pp == 8)
const ll = unsafe.Alignof(l)
assert(ll == 8)
const ff = unsafe.Alignof(f)
assert(ff == 8)
const ii = unsafe.Alignof(i)
assert(ii == 8)
const cc = unsafe.Alignof(c)
assert(cc == 8)
const mm = unsafe.Alignof(m)
assert(mm == 8)
const _ = unsafe /* ERROR not constant */ .Alignof(t)
}
// unsafe.Offsetof
func _[T comparable]() {
var (
b struct{ _, f int64 }
a struct{ _, f [10]T }
s struct{ _, f struct{ f T } }
p struct{ _, f *T }
l struct{ _, f []T }
f struct{ _, f func(T) }
i struct{ _, f interface{ m() T } }
c struct{ _, f chan T }
m struct{ _, f map[T]T }
t struct{ _, f T }
)
const bb = unsafe.Offsetof(b.f)
assert(bb == 8)
const _ = unsafe /* ERROR not constant */ .Alignof(a)
const _ = unsafe /* ERROR not constant */ .Alignof(s)
const pp = unsafe.Offsetof(p.f)
assert(pp == 8)
const ll = unsafe.Offsetof(l.f)
assert(ll == 24)
const ff = unsafe.Offsetof(f.f)
assert(ff == 8)
const ii = unsafe.Offsetof(i.f)
assert(ii == 16)
const cc = unsafe.Offsetof(c.f)
assert(cc == 8)
const mm = unsafe.Offsetof(m.f)
assert(mm == 8)
const _ = unsafe /* ERROR not constant */ .Alignof(t)
}
// unsafe.Sizeof
func _[T comparable]() {
var (
b int64
a [10]T
s struct{ f T }
p *T
l []T
f func(T)
i interface{ m() T }
c chan T
m map[T]T
t T
)
const bb = unsafe.Sizeof(b)
assert(bb == 8)
const _ = unsafe /* ERROR not constant */ .Alignof(a)
const _ = unsafe /* ERROR not constant */ .Alignof(s)
const pp = unsafe.Sizeof(p)
assert(pp == 8)
const ll = unsafe.Sizeof(l)
assert(ll == 24)
const ff = unsafe.Sizeof(f)
assert(ff == 8)
const ii = unsafe.Sizeof(i)
assert(ii == 16)
const cc = unsafe.Sizeof(c)
assert(cc == 8)
const mm = unsafe.Sizeof(m)
assert(mm == 8)
const _ = unsafe /* ERROR not constant */ .Alignof(t)
}
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