Fix underscore lookahead in hex literal parsing (#4448)

This patch fixes #4442. JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
2021-01-11 18:48:53 +01:00
parent 8ddd24f870
commit 5cef002ed6
2 changed files with 21 additions and 1 deletions
@@ -1393,7 +1393,7 @@ lexer_parse_number (parser_context_t *context_p) /**< context */
        if (source_p < source_end_p && source_p[0] == LIT_CHAR_UNDERSCORE)
        {
          source_p++;
-          if (!lit_char_is_hex_digit (source_p[0]) || source_p == source_end_p)
+          if (source_p == source_end_p || !lit_char_is_hex_digit (source_p[0]))
          {
            parser_raise_error (context_p, PARSER_ERR_INVALID_UNDERSCORE_IN_NUMBER);
          }