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go/test/fixedbugs/issue48092.go
Keith Randall 1f83a8c16c cmd/compile: use the zero value for results of impossible indexing
type A [0]int
var a A
x := a[i]

Use the zero value for x instead of the "impossible" value. That lets
us at least compile code like this with -B, even though it can't
possibly run correctly.

Fixes #48092

Change-Id: Idad5cfab49e05f375c069b05addceed68a15299f
Reviewed-on: https://go-review.googlesource.com/c/go/+/346589
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-08-31 21:49:48 +00:00

18 lines
413 B
Go

// compile -B
// Copyright 2021 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.
// Make sure that we can at least compile this code
// successfully with -B. We can't ever produce the right
// answer at runtime with -B, as the access must panic.
package p
type A [0]byte
func (a *A) Get(i int) byte {
return a[i]
}