struct locale_data {
	unsigned int nstrings;
	union locale_data_value {
		char *string;
		unsigned int word;
	} values[];
};
extern __thread struct locale_data **_nl_current_LC_CTYPE;
typedef unsigned long int reg_syntax_t;
extern reg_syntax_t re_syntax_options;
typedef enum {
	REG_ENOSYS
} reg_errcode_t;
typedef struct {
	reg_syntax_t syntax;
	unsigned char *translate;
	unsigned int re_nsub;
} regex_t;
extern __thread void *__libc_tsd_CTYPE_TOLOWER;
inline int **__ctype_tolower_loc(void)
{
	union {
		void **ptr;
		int **tablep;
	} u;
	u.ptr = (&__libc_tsd_CTYPE_TOLOWER);
	if (*u.tablep == 0)
		*u.tablep = (*_nl_current_LC_CTYPE)->values[0].string;
	return u.tablep;
}
inline int tolower(int __c)
{
	return *__ctype_tolower_loc()[__c];
}
typedef struct {
} mbstate_t;
typedef struct {
	int nelem;
} re_node_set;
typedef enum {
	CHARACTER = 1, COMPLEX_BRACKET = 6
} re_token_type_t;
typedef struct {
	long int *mbchars;
	int nmbchars;
} re_charset_t;
typedef struct {
	union {
		unsigned char c;
		unsigned long int *sbcset;
	} opr;
	re_token_type_t type;
} re_token_t;
typedef struct re_dfa_t re_dfa_t;
typedef struct {
	re_node_set nodes;
} re_dfastate_t;
struct re_dfa_t {
	re_token_t *nodes;
	unsigned int nodes_len;
	re_dfastate_t *init_state;
	unsigned long int *sb_char;
	int nbackref;
	unsigned int has_mb_node:1;
	unsigned int is_utf8:1;
	unsigned int map_notascii:1;
	int mb_cur_max;
	int *subexp_map;
};
static inline void re_set_fastmap(char *fastmap, int icase, int ch)
{
	if (icase) {
		int __res;
		if (sizeof(ch) > 1) {
			if (ch) {
			} else
				__res = tolower(ch);
		}
		fastmap[__res] = 1;
	}
}
static void re_compile_fastmap_iter(regex_t * bufp, re_dfastate_t * init_state,
				    char *fastmap)
{
	re_dfa_t *dfa;
	int node_cnt;
	int icase;
	for (node_cnt = 0; node_cnt < init_state->nodes.nelem; ++node_cnt) {
		re_token_type_t type;
		if (type == CHARACTER) {
			if ((bufp->syntax & 0x40000) && dfa->mb_cur_max > 1) {
				void *buf = alloca(dfa->mb_cur_max);
			}
			int i;
			int ch;
			for (; i < (256 / (sizeof(unsigned long int) * 8));) {
				int j;
				int w;
				for (; j < 8;)
					if (w & 1)
						re_set_fastmap(fastmap, icase,
							       ch);
			}
		} else if (type == COMPLEX_BRACKET) {
			int i;
			re_charset_t *cset;
			for (; i < cset->nmbchars;) {
				char buf[256];
				mbstate_t state;
				if (__wcrtomb(buf, cset->mbchars[i], &state) !=
				    -1)
					re_set_fastmap(fastmap, icase, *buf);
			}
		}
	}
}
static unsigned long int *utf8_sb_map;
static reg_errcode_t re_compile_internal(regex_t * preg, const char *pattern,
					 unsigned int length,
					 reg_syntax_t syntax)
{
	re_dfa_t *dfa;
	if (dfa->is_utf8 && !(syntax & 0x400000) && preg->translate == 0)
		optimize_utf8(dfa);
	int result;
	if (strlen((*_nl_current_LC_CTYPE)->values[0].string) < 4)
		result = (*_nl_current_LC_CTYPE)->values[0].string[0] - 'U';
	else
		result =
		    strcmp((*_nl_current_LC_CTYPE)->values[0].string, "UTF-8");
	if (dfa->mb_cur_max == 6 && result == 0)
		dfa->is_utf8 = 1;
	dfa->map_notascii = (*_nl_current_LC_CTYPE)->values[0].word != 0;
	if (dfa->mb_cur_max > 1) {
		if (dfa->is_utf8)
			dfa->sb_char = utf8_sb_map;
		else {
			int i;
			for (; i < (256 / (sizeof(unsigned long int) * 8));) ;
		}
	}
	int node;
	int i;
	int mb_chars;
	int has_period;
	for (; node < dfa->nodes_len;)
		switch (dfa->nodes[node].type) {
		case CHARACTER:
			if (dfa->nodes[node].opr.c >= 0x80)
				mb_chars = 1;
			for (; i < (256 / (sizeof(unsigned long int) * 8));)
				if (dfa->nodes[node].opr.sbcset[i])
					return;
		}
	dfa->has_mb_node = dfa->nbackref > 0 || has_period;
	if (dfa->subexp_map != 0) {
		for (; i < preg->re_nsub; i++)
			if (dfa->subexp_map[i] != i)
				break;
	}
}
const char *__re_compile_pattern(const char *pattern, unsigned int length,
				 regex_t * bufp)
{
	reg_errcode_t ret =
	    re_compile_internal(bufp, pattern, length, re_syntax_options);
}

void __re_compile_fastmap(regex_t * bufp)
{
	re_dfa_t *dfa;
	char *fastmap;
	re_compile_fastmap_iter(bufp, dfa->init_state, fastmap);
}