go ddd1 源码
golang ddd1 代码
文件路径：/test/ddd1.go
// errorcheck
// Copyright 2010 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.
// Verify that illegal uses of ... are detected.
// Does not compile.
package main
import "unsafe"
func sum(args ...int) int { return 0 }
var (
_ = sum(1, 2, 3)
_ = sum()
_ = sum(1.0, 2.0)
_ = sum(1.5) // ERROR "1\.5 .untyped float constant. as int|integer"
_ = sum("hello") // ERROR ".hello. (.untyped string constant. as int|.type untyped string. as type int)|incompatible"
_ = sum([]int{1}) // ERROR "\[\]int{.*}.*as type int"
)
func sum3(int, int, int) int { return 0 }
func tuple() (int, int, int) { return 1, 2, 3 }
var (
_ = sum(tuple())
_ = sum(tuple()...) // ERROR "\.{3} with 3-valued|multiple-value"
_ = sum3(tuple())
_ = sum3(tuple()...) // ERROR "\.{3} in call to non-variadic|multiple-value|invalid use of .*[.][.][.]"
)
type T []T
func funny(args ...T) int { return 0 }
var (
_ = funny(nil)
_ = funny(nil, nil)
_ = funny([]T{}) // ok because []T{} is a T; passes []T{[]T{}}
)
func Foo(n int) {}
func bad(args ...int) {
print(1, 2, args...) // ERROR "[.][.][.]"
println(args...) // ERROR "[.][.][.]"
ch := make(chan int)
close(ch...) // ERROR "[.][.][.]"
_ = len(args...) // ERROR "[.][.][.]"
_ = new(int...) // ERROR "[.][.][.]"
n := 10
_ = make([]byte, n...) // ERROR "[.][.][.]"
_ = make([]byte, 10 ...) // ERROR "[.][.][.]"
var x int
_ = unsafe.Pointer(&x...) // ERROR "[.][.][.]"
_ = unsafe.Sizeof(x...) // ERROR "[.][.][.]"
_ = [...]byte("foo") // ERROR "[.][.][.]"
_ = [...][...]int{{1,2,3},{4,5,6}} // ERROR "[.][.][.]"
Foo(x...) // ERROR "\.{3} in call to non-variadic|invalid use of .*[.][.][.]"
}
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