diff options
Diffstat (limited to 'src/pkg/ebnf/parser.go')
| -rw-r--r-- | src/pkg/ebnf/parser.go | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/pkg/ebnf/parser.go b/src/pkg/ebnf/parser.go index 03cc4a756..84afd382a 100644 --- a/src/pkg/ebnf/parser.go +++ b/src/pkg/ebnf/parser.go @@ -195,7 +195,7 @@ func (p *parser) parse(filename string, src []byte) Grammar { for p.tok != token.EOF { prod := p.parseProduction(); name := prod.Name.String; - if prev, found := grammar[name]; !found { + if _, found := grammar[name]; !found { grammar[name] = prod; } else { p.Error(prod.Pos(), name + " declared already"); |