PHP 7.4.10 Trying to access array offset on value of type null

[cminovici]

Hello,

Stack:

• PHP 7.4.10
• doctrine/annotations : 1.11.1
• doctrine/orm : v2.6.3
• symfony/symfony: v4.4.17

Just upgraded PHP from 7.3.9 to 7.4.10 and I get the following err "Trying to access array offset on value of type null" when using LIKE syntax inside DQL where condition.

And I get

vendor/doctrine/orm/lib/Doctrine/ORM/Query/Parser.php:3195

        if ($this->lexer->lookahead['type'] === Lexer::T_ESCAPE) {
            $this->match(Lexer::T_ESCAPE);
            $this->match(Lexer::T_STRING);

            $escapeChar = new AST\Literal(AST\Literal::STRING, $this->lexer->token['value']);
        }

Solution is to proper check if isset

        if (isset($this->lexer->lookahead['type']) && $this->lexer->lookahead['type'] === Lexer::T_ESCAPE) {
            $this->match(Lexer::T_ESCAPE);
            $this->match(Lexer::T_STRING);

            $escapeChar = new AST\Literal(AST\Literal::STRING, $this->lexer->token['value']);
        }

Related to #273

Can you help us check? I can help with fix

Thanks