1 files changed, 19 insertions, 14 deletions

diff --git a/src/regex.c b/src/regex.c
index 79fb28ba12a..39adb080efd 100644
--- a/src/regex.c
+++ b/src/regex.c
@@ -531,8 +531,10 @@ init_syntax_once (void)
 /* Type of source-pattern and string chars.  */
 #ifdef _MSC_VER
 typedef unsigned char re_char;
+typedef const re_char const_re_char;
 #else
 typedef const unsigned char re_char;
+typedef re_char const_re_char;
 #endif
 
 typedef char boolean;
@@ -2015,7 +2017,7 @@ struct range_table_work_area
 
 /* Map a string to the char class it names (if any).  */
 re_wctype_t
-re_wctype (const re_char *str)
+re_wctype (const_re_char *str)
 {
   const char *string = (const char *) str;
   if      (STREQ (string, "alnum"))     return RECC_ALNUM;
@@ -2409,7 +2411,8 @@ do {									\
   } while (0)
 
 static reg_errcode_t
-regex_compile (const re_char *pattern, size_t size, reg_syntax_t syntax, struct re_pattern_buffer *bufp)
+regex_compile (const_re_char *pattern, size_t size, reg_syntax_t syntax,
+               struct re_pattern_buffer *bufp)
 {
   /* We fetch characters from PATTERN here.  */
   register re_wchar_t c, c1;
@@ -3765,7 +3768,7 @@ insert_op2 (re_opcode_t op, unsigned char *loc, int arg1, int arg2, unsigned cha
    least one character before the ^.  */
 
 static boolean
-at_begline_loc_p (const re_char *pattern, const re_char *p, reg_syntax_t syntax)
+at_begline_loc_p (const_re_char *pattern, const_re_char *p, reg_syntax_t syntax)
 {
   re_char *prev = p - 2;
   boolean odd_backslashes;
@@ -3806,7 +3809,7 @@ at_begline_loc_p (const re_char *pattern, const re_char *p, reg_syntax_t syntax)
    at least one character after the $, i.e., `P < PEND'.  */
 
 static boolean
-at_endline_loc_p (const re_char *p, const re_char *pend, reg_syntax_t syntax)
+at_endline_loc_p (const_re_char *p, const_re_char *pend, reg_syntax_t syntax)
 {
   re_char *next = p;
   boolean next_backslash = *next == '\\';
@@ -3850,7 +3853,8 @@ group_in_compile_stack (compile_stack_type compile_stack, regnum_t regnum)
    Return -1 if fastmap was not updated accurately.  */
 
 static int
-analyse_first (const re_char *p, const re_char *pend, char *fastmap, const int multibyte)
+analyse_first (const_re_char *p, const_re_char *pend, char *fastmap,
+               const int multibyte)
 {
   int j, k;
   boolean not;
@@ -4594,7 +4598,7 @@ static int bcmp_translate (re_char *s1, re_char *s2,
 /* If the operation is a match against one or more chars,
    return a pointer to the next operation, else return NULL.  */
 static re_char *
-skip_one_char (const re_char *p)
+skip_one_char (const_re_char *p)
 {
   switch (*p++)
     {
@@ -4636,7 +4640,7 @@ skip_one_char (const re_char *p)
 
 /* Jump over non-matching operations.  */
 static re_char *
-skip_noops (const re_char *p, const re_char *pend)
+skip_noops (const_re_char *p, const_re_char *pend)
 {
   int mcnt;
   while (p < pend)
@@ -4663,7 +4667,8 @@ skip_noops (const re_char *p, const re_char *pend)
 
 /* Non-zero if "p1 matches something" implies "p2 fails".  */
 static int
-mutually_exclusive_p (struct re_pattern_buffer *bufp, const re_char *p1, const re_char *p2)
+mutually_exclusive_p (struct re_pattern_buffer *bufp, const_re_char *p1,
+                      const_re_char *p2)
 {
   re_opcode_t op2;
   const boolean multibyte = RE_MULTIBYTE_P (bufp);
@@ -4922,8 +4927,8 @@ WEAK_ALIAS (__re_match_2, re_match_2)
 /* This is a separate function so that we can force an alloca cleanup
    afterwards.  */
 static regoff_t
-re_match_2_internal (struct re_pattern_buffer *bufp, const re_char *string1,
-                     size_t size1, const re_char *string2, size_t size2,
+re_match_2_internal (struct re_pattern_buffer *bufp, const_re_char *string1,
+                     size_t size1, const_re_char *string2, size_t size2,
                      ssize_t pos, struct re_registers *regs, ssize_t stop)
 {
   /* General temporaries.  */
@@ -6265,7 +6270,7 @@ re_match_2_internal (struct re_pattern_buffer *bufp, const re_char *string1,
    bytes; nonzero otherwise.  */
 
 static int
-bcmp_translate (const re_char *s1, const re_char *s2, register ssize_t len,
+bcmp_translate (const_re_char *s1, const_re_char *s2, register ssize_t len,
                 RE_TRANSLATE_TYPE translate, const int target_multibyte)
 {
   register re_char *p1 = s1, *p2 = s2;
@@ -6434,7 +6439,7 @@ re_exec (const char *s)
    the return codes and their meanings.)  */
 
 reg_errcode_t
-regcomp (regex_t *__restrict preg, const char *__restrict pattern,
+regcomp (regex_t *_Restrict_ preg, const char *_Restrict_ pattern,
          int cflags)
 {
   reg_errcode_t ret;
@@ -6515,8 +6520,8 @@ WEAK_ALIAS (__regcomp, regcomp)
    We return 0 if we find a match and REG_NOMATCH if not.  */
 
 reg_errcode_t
-regexec (const regex_t *__restrict preg, const char *__restrict string,
-         size_t nmatch, regmatch_t pmatch[__restrict_arr], int eflags)
+regexec (const regex_t *_Restrict_ preg, const char *_Restrict_ string,
+         size_t nmatch, regmatch_t pmatch[_Restrict_arr_], int eflags)
 {
   regoff_t ret;
   struct re_registers regs;