go issue51658 源码
golang issue51658 代码
文件路径：/src/go/types/testdata/fixedbugs/issue51658.go
// Copyright 2022 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.
package p
type F { // ERROR expected type
float64
} // ERROR expected declaration
func _[T F | int](x T) {
_ = x == 0 // don't crash when recording type of 0
}
// test case from issue
type FloatType { // ERROR expected type
float32 | float64
} // ERROR expected declaration
type IntegerType interface {
int8 | int16 | int32 | int64 | int |
uint8 | uint16 | uint32 | uint64 | uint
}
type ComplexType interface {
complex64 | complex128
}
type Number interface {
FloatType | IntegerType | ComplexType
}
func GetDefaultNumber[T Number](value, defaultValue T) T {
if value == 0 {
return defaultValue
}
return value
}
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