Fix regex type usage

  include/regex.h had not been updated during the int -> Idx transition,
and the prototypes don't matched the definitions in regexec.c.

In regcomp.c, most interfaces were updated for Idx, except for two ones
guarded by #if _LIBC.

Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
---
Please keep me in CC, as I'm not subscribed.

 include/regex.h | 22 +++++++++++-----------
 posix/regcomp.c |  8 ++++----
 2 files changed, 15 insertions(+), 15 deletions(-)
  

On 2023-04-22 20:55, наб via Libc-alpha wrote:
> include/regex.h had not been updated during the int -> Idx transition,
> and the prototypes don't matched the definitions in regexec.c.
> 
> In regcomp.c, most interfaces were updated for Idx, except for two ones
> guarded by #if _LIBC.
> 
> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
> ---

LGTM.

Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>

> Please keep me in CC, as I'm not subscribed.
> 
>   include/regex.h | 22 +++++++++++-----------
>   posix/regcomp.c |  8 ++++----
>   2 files changed, 15 insertions(+), 15 deletions(-)
> 
> diff --git a/include/regex.h b/include/regex.h
> index 34fb67d855..0ab70a63d4 100644
> --- a/include/regex.h
> +++ b/include/regex.h
> @@ -11,27 +11,27 @@ extern const char *__re_compile_pattern (const char *pattern, size_t length,
>   extern int __re_compile_fastmap (struct re_pattern_buffer *buffer)
>        attribute_hidden;
>   
> -extern int __re_search (struct re_pattern_buffer *buffer, const char *string,
> -			int length, int start, int range,
> +extern regoff_t __re_search (struct re_pattern_buffer *buffer, const char *string,
> +			regoff_t length, regoff_t start, regoff_t range,
>   			struct re_registers *regs);
>   
> -extern int __re_search_2
> +extern regoff_t __re_search_2
>     (struct re_pattern_buffer *buffer, const char *string1,
> -   int length1, const char *string2, int length2,
> -   int start, int range, struct re_registers *regs, int stop);
> +   regoff_t length1, const char *string2, regoff_t length2,
> +   regoff_t start, regoff_t range, struct re_registers *regs, regoff_t stop);
>   
> -extern int __re_match
> +extern regoff_t __re_match
>     (struct re_pattern_buffer *buffer, const char *string,
> -   int length, int start, struct re_registers *regs);
> +   regoff_t length, regoff_t start, struct re_registers *regs);
>   
> -extern int __re_match_2
> +extern regoff_t __re_match_2
>     (struct re_pattern_buffer *buffer, const char *string1,
> -   int length1, const char *string2, int length2,
> -   int start, struct re_registers *regs, int stop);
> +   regoff_t length1, const char *string2, regoff_t length2,
> +   regoff_t start, struct re_registers *regs, regoff_t stop);
>   
>   extern void __re_set_registers
>     (struct re_pattern_buffer *buffer, struct re_registers *regs,
> -   unsigned num_regs, regoff_t *starts, regoff_t *ends);
> +   __re_size_t num_regs, regoff_t *starts, regoff_t *ends);
>   
>   extern int __regcomp (regex_t *__preg, const char *__pattern, int __cflags);
>   libc_hidden_proto (__regcomp)
> diff --git a/posix/regcomp.c b/posix/regcomp.c
> index cbd9bfc673..a928ef6c2d 100644
> --- a/posix/regcomp.c
> +++ b/posix/regcomp.c
> @@ -2940,7 +2940,7 @@ lookup_collation_sequence_value (bracket_elem_t *br_elem, uint32_t nrules,
>   
>   static inline reg_errcode_t
>   __attribute__ ((always_inline))
> -build_range_exp (bitset_t sbcset, re_charset_t *mbcset, int *range_alloc,
> +build_range_exp (bitset_t sbcset, re_charset_t *mbcset, Idx *range_alloc,
>   		 bracket_elem_t *start_elem, bracket_elem_t *end_elem,
>   		 re_dfa_t *dfa, reg_syntax_t syntax, uint32_t nrules,
>   		 const unsigned char *collseqmb, const char *collseqwc,
> @@ -2984,7 +2984,7 @@ build_range_exp (bitset_t sbcset, re_charset_t *mbcset, int *range_alloc,
>   	  /* There is not enough space, need realloc.  */
>   	  uint32_t *new_array_start;
>   	  uint32_t *new_array_end;
> -	  int new_nranges;
> +	  Idx new_nranges;
>   
>   	  /* +1 in case of mbcset->nranges is 0.  */
>   	  new_nranges = 2 * mbcset->nranges + 1;
> @@ -3030,7 +3030,7 @@ build_range_exp (bitset_t sbcset, re_charset_t *mbcset, int *range_alloc,
>   static inline reg_errcode_t
>   __attribute__ ((always_inline))
>   build_collating_symbol (bitset_t sbcset, re_charset_t *mbcset,
> -			int *coll_sym_alloc, const unsigned char *name,
> +			Idx *coll_sym_alloc, const unsigned char *name,
>   			uint32_t nrules, int32_t table_size,
>   			const int32_t *symb_table, const unsigned char *extra)
>   {
> @@ -3063,7 +3063,7 @@ build_collating_symbol (bitset_t sbcset, re_charset_t *mbcset,
>   	{
>   	  /* Not enough, realloc it.  */
>   	  /* +1 in case of mbcset->ncoll_syms is 0.  */
> -	  int new_coll_sym_alloc = 2 * mbcset->ncoll_syms + 1;
> +	  Idx new_coll_sym_alloc = 2 * mbcset->ncoll_syms + 1;
>   	  /* Use realloc since mbcset->coll_syms is NULL
>   	     if *alloc == 0.  */
>   	  int32_t *new_coll_syms = re_realloc (mbcset->coll_syms, int32_t,