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go/test/fixedbugs/issue23587.go

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cmd/compile/internal/syntax: don't assume (operator) ~ means operator ^ The scanner assumed that ~ really meant ^, which may be helpful when coming from C. But ~ is not a valid Go token, and pretending that it should be ^ can lead to confusing error messages. Better to be upfront about it and complain about the invalid character in the first place. This was code "inherited" from the original yacc parser which was derived from a C compiler. It's 10 years later and we can probably assume that people are less confused about C and Go. Fixes #23587. Change-Id: I8d8f9b55b0dff009b75c1530d729bf9092c5aea6 Reviewed-on: https://go-review.googlesource.com/94160 Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2018-02-14 21:54:28 -07:00
// errorcheck
// Copyright 2018 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 p
cmd/compile/internal/syntax: add "~" operator Change-Id: I7991103d97b97260d9615b7f5baf7ec75ad87d1f Reviewed-on: https://go-review.googlesource.com/c/go/+/307370 Trust: Robert Griesemer <gri@golang.org> Reviewed-by: Robert Findley <rfindley@google.com>
2021-04-05 17:52:25 -06:00
func _(x int) {
_ = ~x // ERROR "unexpected ~"
}
func _(x int) {
_ = x ~ x // ERROR "unexpected ~ at end of statement"
cmd/compile/internal/syntax: don't assume (operator) ~ means operator ^ The scanner assumed that ~ really meant ^, which may be helpful when coming from C. But ~ is not a valid Go token, and pretending that it should be ^ can lead to confusing error messages. Better to be upfront about it and complain about the invalid character in the first place. This was code "inherited" from the original yacc parser which was derived from a C compiler. It's 10 years later and we can probably assume that people are less confused about C and Go. Fixes #23587. Change-Id: I8d8f9b55b0dff009b75c1530d729bf9092c5aea6 Reviewed-on: https://go-review.googlesource.com/94160 Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2018-02-14 21:54:28 -07:00
}
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