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master
test/fixedbugs/issue13480.go
38 строк
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Robert Griesemer
[dev.typeparams] cmd/compile/internal/types2: adjusted more error messages for compiler
10 дек 2020, 02:59
10 дек 2020, 02:59
edf80c4
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// errorcheck // Copyright 2015 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 comparisons of slice/map/func values against converted nil // values are properly rejected. package p func bug() { type S []byte type M map[int]int type F func() var s S var m M var f F _ = s == S(nil) // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare" _ = S(nil) == s // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare" switch s { case S(nil): // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare" } _ = m == M(nil) // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare" _ = M(nil) == m // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare" switch m { case M(nil): // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare" } _ = f == F(nil) // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare" _ = F(nil) == f // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare" switch f { case F(nil): // ERROR "compare.*to nil|operator \=\= not defined for .|cannot compare" } }