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master
test/fixedbugs/issue19911.go
34 строки
832 B
Josh Bleecher Snyder
cmd/compile: make iface == iface const evaluation respect !=
10 апр 2017, 23:05
10 апр 2017, 23:05
b83a916
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// run // Copyright 2017 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 main import ( "fmt" "strings" ) type ET struct{} func (*ET) Error() string { return "err" } func main() { check("false", fmt.Sprintf("(*ET)(nil) == error(nil): %v", (*ET)(nil) == error(nil))) check("true", fmt.Sprintf("(*ET)(nil) != error(nil): %v", (*ET)(nil) != error(nil))) nilET := (*ET)(nil) nilError := error(nil) check("false", fmt.Sprintf("nilET == nilError: %v", nilET == nilError)) check("true", fmt.Sprintf("nilET != nilError: %v", nilET != nilError)) } func check(want, gotfull string) { got := gotfull[strings.Index(gotfull, ": ")+len(": "):] if got != want { panic("want " + want + " got " + got + " from " + gotfull) } }