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Diffstat (limited to '')
-rw-r--r-- | test/fixedbugs/issue6977.go | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/test/fixedbugs/issue6977.go b/test/fixedbugs/issue6977.go new file mode 100644 index 0000000..4525e40 --- /dev/null +++ b/test/fixedbugs/issue6977.go @@ -0,0 +1,40 @@ +// 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" |