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fix: GetChild checks children length properly #4679

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2 changes: 1 addition & 1 deletion runtime/Go/antlr/v4/parser_rule_context.go
Original file line number Diff line number Diff line change
Expand Up @@ -161,7 +161,7 @@ func (prc *BaseParserRuleContext) AddErrorNode(badToken Token) *ErrorNodeImpl {
}

func (prc *BaseParserRuleContext) GetChild(i int) Tree {
if prc.children != nil && len(prc.children) >= i {
if prc.children != nil && len(prc.children) > i {
return prc.children[i]
}

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