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go/test/fixedbugs/bug205.go
Robert Griesemer 8f19394b62 cmd/compile/internal/types2: refactor untyped conversions
Based on https://golang.org/cl/284256 for go/types.
Brings this code more in line with go/types.

Adjusted various tests to match new error messages which
generally are now better: for assignment errors, instead
of a generic "cannot convert" we now say "cannot use"
followed by a clearer reason as to why not.

Major differences to go/types with respect to the changed
files:

- Some of the new code now returns error codes, but they
  are only used internally for now, and not reported with
  errors.

- go/types does not "convert" untyped nil values to target
  types, but here we do. This is unchanged from how types2
  handled this before this CL.

Change-Id: If45336d7ee679ece100f6d9d9f291a6ea55004d8
Reviewed-on: https://go-review.googlesource.com/c/go/+/302757
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-03-23 05:11:09 +00:00

19 lines
509 B
Go

// errorcheck
// Copyright 2009 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 t []int
var s string;
var m map[string]int;
func main() {
println(t["hi"]); // ERROR "non-integer slice index|must be integer|cannot convert"
println(s["hi"]); // ERROR "non-integer string index|must be integer|cannot convert"
println(m[0]); // ERROR "cannot use.*as type string|cannot convert|cannot use"
}