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int yylex_init_extra(struct ctf_scanner *scanner, yyscan_t * ptr_yy_globals);
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int yylex_destroy(yyscan_t yyscanner);
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BT_HIDDEN
int yylex_init_extra(struct ctf_scanner *scanner, yyscan_t * ptr_yy_globals);
BT_HIDDEN
int yylex_destroy(yyscan_t yyscanner);
BT_HIDDEN