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eb6c433eb3
Don't convert values that aren't Go constants, like uintptr(unsafe.Pointer(nil)), to a literal constant. This avoids assuming they are constants for things like indexing, array sizes, case duplication, etc. Also, nil is an allowed duplicate in switches. CTNILs aren't Go constants. Fixes #28078 Fixes #28079 Change-Id: I9ab8af47098651ea09ef10481787eae2ae2fb445 Reviewed-on: https://go-review.googlesource.com/c/151320 Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
35 lines
572 B
Go
35 lines
572 B
Go
// compile
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// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Non-constant duplicate keys/cases should not be reported
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// as errors by the compiler.
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package p
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import "unsafe"
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func f() {
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_ = map[uintptr]int{
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0: 0,
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uintptr(unsafe.Pointer(nil)): 0,
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}
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switch uintptr(0) {
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case 0:
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case uintptr(unsafe.Pointer(nil)):
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}
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switch interface{}(nil) {
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case nil:
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case nil:
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}
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_ = map[interface{}]int{
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nil: 0,
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nil: 0,
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}
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}
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