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go/test/fixedbugs/bug255.go
Robert Griesemer badba359da go/types, types2: better error message for invalid array length
If an invalid array length is just an identifier, mention
"array length" so that it's clear this is an invalid array
declaration and not a (invalid) generic type declaration.

Fixes #51145.

Change-Id: I8878cbb6c7b1277fc0a9a014712ec8d55499c5c7
Reviewed-on: https://go-review.googlesource.com/c/go/+/385255
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-02-11 22:01:05 +00:00

22 lines
847 B
Go

// errorcheck
// Copyright 2010 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 main
var a [10]int // ok
var b [1e1]int // ok
var c [1.5]int // ERROR "truncated|must be integer"
var d ["abc"]int // ERROR "invalid array bound|not numeric|must be integer"
var e [nil]int // ERROR "use of untyped nil|invalid array (bound|length)|not numeric|must be constant"
// var f [e]int // ok with Go 1.17 because an error was reported for e; leads to an error for Go 1.18
var f [ee]int // ERROR "undefined|undeclared"
var g [1 << 65]int // ERROR "array bound is too large|overflows|must be integer"
var h [len(a)]int // ok
func ff() string
var i [len([1]string{ff()})]int // ERROR "non-constant array bound|not constant|must be constant"