use direct syscall rather than write function in posix_spawn child

[musl] / src / regex / regexec.c

diff --git a/src/regex/regexec.c b/src/regex/regexec.c
index 79874ca..16c5d0a 100644 (file)
--- a/src/regex/regexec.c
+++ b/src/regex/regexec.c
@@ -52,7 +52,7 @@ tre_fill_pmatch(size_t nmatch, regmatch_t pmatch[], int cflags,
 #define GET_NEXT_WCHAR() do {                                                 \
     prev_c = next_c; pos += pos_add_next;                                     \
     if ((pos_add_next = mbtowc(&next_c, str_byte, MB_LEN_MAX)) <= 0) {        \
-        if (pos_add_next < 0) return REG_NOMATCH;                             \
+        if (pos_add_next < 0) { ret = REG_NOMATCH; goto error_exit; }         \
         else pos_add_next++;                                                  \
     }                                                                         \
     str_byte += pos_add_next;                                                 \
@@ -174,13 +174,14 @@ tre_tnfa_run_parallel(const tre_tnfa_t *tnfa, const void *string,
   tre_char_t prev_c = 0, next_c = 0;
   const char *str_byte = string;
   int pos = -1;
-  unsigned int pos_add_next = 1;
+  int pos_add_next = 1;
 #ifdef TRE_MBSTATE
   mbstate_t mbstate;
 #endif /* TRE_MBSTATE */
   int reg_notbol = eflags & REG_NOTBOL;
   int reg_noteol = eflags & REG_NOTEOL;
   int reg_newline = tnfa->cflags & REG_NEWLINE;
+  reg_errcode_t ret;
 
   char *buf;
   tre_tnfa_transition_t *trans_i;
@@ -439,11 +440,11 @@ tre_tnfa_run_parallel(const tre_tnfa_t *tnfa, const void *string,
       reach_next_i->state = NULL;
     }
 
-  if (buf)
-    xfree(buf);
-
   *match_end_ofs = match_eo;
-  return match_eo >= 0 ? REG_OK : REG_NOMATCH;
+  ret = match_eo >= 0 ? REG_OK : REG_NOMATCH;
+error_exit:
+  xfree(buf);
+  return ret;
 }
 
 
@@ -583,7 +584,7 @@ tre_tnfa_run_backtrack(const tre_tnfa_t *tnfa, const void *string,
   tre_char_t prev_c = 0, next_c = 0;
   const char *str_byte = string;
   int pos = 0;
-  unsigned int pos_add_next = 1;
+  int pos_add_next = 1;
 #ifdef TRE_MBSTATE
   mbstate_t mbstate;
 #endif /* TRE_MBSTATE */
@@ -977,12 +978,13 @@ tre_fill_pmatch(size_t nmatch, regmatch_t pmatch[], int cflags,
 */
 
 int
-regexec(const regex_t *preg, const char *string,
-         size_t nmatch, regmatch_t pmatch[], int eflags)
+regexec(const regex_t *restrict preg, const char *restrict string,
+         size_t nmatch, regmatch_t pmatch[restrict], int eflags)
 {
   tre_tnfa_t *tnfa = (void *)preg->TRE_REGEX_T_FIELD;
   reg_errcode_t status;
   int *tags = NULL, eo;
+  if (tnfa->cflags & REG_NOSUB) nmatch = 0;
   if (tnfa->num_tags > 0 && nmatch > 0)
     {
       tags = xmalloc(sizeof(*tags) * tnfa->num_tags);