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cmd/compile: reject identifiers beginning with non-ASCII digit

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Fixes #11359.

Change-Id: I0fdfa410939f7e42020cbb19d74a67e1cc3cd610
Reviewed-on: https://go-review.googlesource.com/16919
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Russ Cox 2015-11-04 15:28:47 -05:00
parent f2eb3de636
commit 247959d9b8
2 changed files with 14 additions and 0 deletions
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3
src/cmd/compile/internal/gc/lex.go
View file

@ -1469,6 +1469,9 @@ talph:
if !unicode.IsLetter(r) && !unicode.IsDigit(r) && (importpkg == nil || r != 0xb7) {
Yyerror("invalid identifier character U+%04x", r)
}
if cp.Len() == 0 && unicode.IsDigit(r) {
Yyerror("identifier cannot begin with digit U+%04x", r)
}
cp.WriteRune(r)
} else if !isAlnum(c) && c != '_' {
break

11
test/fixedbugs/issue11359.go Normal file
View file

@ -0,0 +1,11 @@
// errorcheck
// Copyright 2015 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.
// identifiers beginning with non-ASCII digits were incorrectly accepted.
// issue 11359.
package p
var ۶ = 0 // ERROR "identifier cannot begin with digit"