1 files changed, 28 insertions, 17 deletions

diff --git a/posix/regex.c b/posix/regex.c
index f1d066b844..b4adfcf6ed 100644
--- a/posix/regex.c
+++ b/posix/regex.c
@@ -3507,23 +3507,19 @@ compile_range (range_start_char, p_ptr, pend, translate, syntax, b)
      unsigned char *b;
 {
   unsigned this_char;
-
   const char *p = *p_ptr;
   reg_errcode_t ret;
-  char range_start[2];
-  char range_end[2];
-  char ch[2];
+#if _LIBC
+  const unsigned char *collseq;
+  unsigned int start_colseq;
+  unsigned int end_colseq;
+#else
+  unsigned end_char;
+#endif
 
   if (p == pend)
     return REG_ERANGE;
 
-  /* Fetch the endpoints without translating them; the
-     appropriate translation is done in the bit-setting loop below.  */
-  range_start[0] = TRANSLATE (range_start_char);
-  range_start[1] = '\0';
-  range_end[0] = TRANSLATE (p[0]);
-  range_end[1] = '\0';
-
   /* Have to increment the pointer into the pattern string, so the
      caller isn't still at the ending character.  */
   (*p_ptr)++;
@@ -3531,19 +3527,34 @@ compile_range (range_start_char, p_ptr, pend, translate, syntax, b)
   /* Report an error if the range is empty and the syntax prohibits this.  */
   ret = syntax & RE_NO_EMPTY_RANGES ? REG_ERANGE : REG_NOERROR;
 
-  /* Here we see why `this_char' has to be larger than an `unsigned
-     char' -- we would otherwise go into an infinite loop, since all
-     characters <= 0xff.  */
-  ch[1] = '\0';
+#if _LIBC
+  collseq = (const unsigned char *) _NL_CURRENT (LC_COLLATE,
+						 _NL_COLLATE_COLLSEQMB);
+
+  start_colseq = collseq[TRANSLATE (range_start_char)];
+  end_colseq = collseq[TRANSLATE (p[0])];
   for (this_char = 0; this_char <= (unsigned char) -1; ++this_char)
     {
-      ch[0] = this_char;
-      if (strcoll (range_start, ch) <= 0 && strcoll (ch, range_end) <= 0)
+      unsigned int this_colseq = collseq[TRANSLATE (this_char)];
+
+      if (start_colseq <= this_colseq && this_colseq <= end_colseq)
 	{
 	  SET_LIST_BIT (TRANSLATE (this_char));
 	  ret = REG_NOERROR;
 	}
     }
+#else
+  /* Here we see why `this_char' has to be larger than an `unsigned
+     char' -- we would otherwise go into an infinite loop, since all
+     characters <= 0xff.  */
+  range_start_char = TRANSLATE (range_start_char);
+  end_char = TRANSLATE (p[0]);
+  for (this_char = range_start_char; this_char <= end_char; ++this_char)
+    {
+      SET_LIST_BIT (TRANSLATE (this_char));
+      ret = REG_NOERROR;
+    }
+#endif
 
   return ret;
 }