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test/fixedbugs/issue6977.go
40 строк
1 KB
Ian Lance Taylor
test: match gofrontend error messages
03 дек 2020, 23:30
03 дек 2020, 23:30
bacb307
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// errorcheck // Copyright 2019 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 import "io" // Alan's initial report. type I interface { f(); String() string } type J interface { g(); String() string } type IJ1 = interface { I; J } type IJ2 = interface { f(); g(); String() string } var _ = (*IJ1)(nil) == (*IJ2)(nil) // static assert that IJ1 and IJ2 are identical types // The canonical example. type ReadWriteCloser interface { io.ReadCloser; io.WriteCloser } // Some more cases. type M interface { m() } type M32 interface { m() int32 } type M64 interface { m() int64 } type U1 interface { m() } type U2 interface { m(); M } type U3 interface { M; m() } type U4 interface { M; M; M } type U5 interface { U1; U2; U3; U4 } type U6 interface { m(); m() } // ERROR "duplicate method .*m" type U7 interface { M32; m() } // ERROR "duplicate method .*m" type U8 interface { m(); M32 } // ERROR "duplicate method .*m" type U9 interface { M32; M64 } // ERROR "duplicate method .*m"