update from libc

1 files changed, 112 insertions, 49 deletions

diff --git a/lib/regex.c b/lib/regex.c
index c20977cd9..83a6820b5 100644
--- a/lib/regex.c
+++ b/lib/regex.c
@@ -405,9 +405,6 @@ typedef char boolean;
 static reg_errcode_t byte_regex_compile _RE_ARGS ((const char *pattern, size_t size,
                                                    reg_syntax_t syntax,
                                                    struct re_pattern_buffer *bufp));
-static reg_errcode_t wcs_regex_compile _RE_ARGS ((const char *pattern, size_t size,
-                                                   reg_syntax_t syntax,
-                                                   struct re_pattern_buffer *bufp));
 
 static int byte_re_match_2_internal PARAMS ((struct re_pattern_buffer *bufp,
 					     const char *string1, int size1,
@@ -415,6 +412,19 @@ static int byte_re_match_2_internal PARAMS ((struct re_pattern_buffer *bufp,
 					     int pos,
 					     struct re_registers *regs,
 					     int stop));
+static int byte_re_search_2 PARAMS ((struct re_pattern_buffer *bufp,
+				     const char *string1, int size1,
+				     const char *string2, int size2,
+				     int startpos, int range,
+				     struct re_registers *regs, int stop));
+static int byte_re_compile_fastmap PARAMS ((struct re_pattern_buffer *bufp));
+
+#ifdef MBS_SUPPORT
+static reg_errcode_t wcs_regex_compile _RE_ARGS ((const char *pattern, size_t size,
+                                                   reg_syntax_t syntax,
+                                                   struct re_pattern_buffer *bufp));
+
+
 static int wcs_re_match_2_internal PARAMS ((struct re_pattern_buffer *bufp,
 					    const char *cstring1, int csize1,
 					    const char *cstring2, int csize2,
@@ -424,19 +434,13 @@ static int wcs_re_match_2_internal PARAMS ((struct re_pattern_buffer *bufp,
 					    wchar_t *string1, int size1,
 					    wchar_t *string2, int size2,
 					    int *mbs_offset1, int *mbs_offset2));
-static int byte_re_search_2 PARAMS ((struct re_pattern_buffer *bufp,
-				     const char *string1, int size1,
-				     const char *string2, int size2,
-				     int startpos, int range,
-				     struct re_registers *regs, int stop));
 static int wcs_re_search_2 PARAMS ((struct re_pattern_buffer *bufp,
 				    const char *string1, int size1,
 				    const char *string2, int size2,
 				    int startpos, int range,
 				    struct re_registers *regs, int stop));
-static int byte_re_compile_fastmap PARAMS ((struct re_pattern_buffer *bufp));
 static int wcs_re_compile_fastmap PARAMS ((struct re_pattern_buffer *bufp));
-
+#endif
 
 /* These are the command codes that appear in compiled regular
    expressions.  Some opcodes are followed by argument bytes.  A
@@ -606,29 +610,31 @@ typedef enum
 # define PREFIX(name) byte_##name
 # define ARG_PREFIX(name) name
 # define PUT_CHAR(c) putchar (c)
-#elif defined WCHAR
-# define CHAR_T wchar_t
-# define UCHAR_T wchar_t
-# define COMPILED_BUFFER_VAR wc_buffer
-# define OFFSET_ADDRESS_SIZE 1 /* the size which STORE_NUMBER macro use */
-# define CHAR_CLASS_SIZE ((__alignof__(wctype_t)+sizeof(wctype_t))/sizeof(CHAR_T)+1)
-# define PREFIX(name) wcs_##name
-# define ARG_PREFIX(name) c##name
-/* Should we use wide stream??  */
-# define PUT_CHAR(c) printf ("%C", c);
-# define TRUE 1
-# define FALSE 0
 #else
-# ifdef MBS_SUPPORT
-#  define WCHAR
+# ifdef WCHAR
+#  define CHAR_T wchar_t
+#  define UCHAR_T wchar_t
+#  define COMPILED_BUFFER_VAR wc_buffer
+#  define OFFSET_ADDRESS_SIZE 1 /* the size which STORE_NUMBER macro use */
+#  define CHAR_CLASS_SIZE ((__alignof__(wctype_t)+sizeof(wctype_t))/sizeof(CHAR_T)+1)
+#  define PREFIX(name) wcs_##name
+#  define ARG_PREFIX(name) c##name
+/* Should we use wide stream??  */
+#  define PUT_CHAR(c) printf ("%C", c);
+#  define TRUE 1
+#  define FALSE 0
+# else
+#  ifdef MBS_SUPPORT
+#   define WCHAR
+#   define INSIDE_RECURSION
+#   include "regex.c"
+#   undef INSIDE_RECURSION
+#  endif
+#  define BYTE
 #  define INSIDE_RECURSION
 #  include "regex.c"
 #  undef INSIDE_RECURSION
 # endif
-# define BYTE
-# define INSIDE_RECURSION
-# include "regex.c"
-# undef INSIDE_RECURSION
 #endif
 
 #ifdef INSIDE_RECURSION
@@ -3048,7 +3054,7 @@ PREFIX(regex_compile) (ARG_PREFIX(pattern), ARG_PREFIX(size), syntax, bufp)
 				    /* First compare the hashing value.  */
 				    if (symb_table[2 * elem] == hash
 					&& c1 == extra[symb_table[2 * elem + 1]]
-					&& memcmp (str,
+					&& memcmp (char_str,
 						   &extra[symb_table[2 * elem + 1]
 							 + 1], c1) == 0)
 				      {
@@ -3068,7 +3074,7 @@ PREFIX(regex_compile) (ARG_PREFIX(pattern), ARG_PREFIX(size), syntax, bufp)
 				       in the table.  */
 				    idx += 1 + extra[idx];
 				    /* Adjust for the alignment.  */
-				    idx = (idx + 3) & ~4;
+				    idx = (idx + 3) & ~3;
 
 				    str[0] = (wchar_t) idx + 4;
 				  }
@@ -5071,16 +5077,35 @@ weak_alias (__re_search_2, re_search_2)
 #endif
 
 #ifdef WCHAR
-# define FREE_WCS_BUFFERS()    \
-  do {                         \
-    FREE_VAR (string1);                \
-    FREE_VAR (string2);                \
-    FREE_VAR (mbs_offset1);    \
-    FREE_VAR (mbs_offset2);    \
+# define MAX_ALLOCA_SIZE	2000
+
+# define FREE_WCS_BUFFERS() \
+  do {									      \
+    if (size1 > MAX_ALLOCA_SIZE)					      \
+      {									      \
+	free (wcs_string1);						      \
+	free (mbs_offset1);						      \
+      }									      \
+    else								      \
+      {									      \
+	FREE_VAR (wcs_string1);						      \
+	FREE_VAR (mbs_offset1);						      \
+      }									      \
+    if (size2 > MAX_ALLOCA_SIZE) 					      \
+      {									      \
+	free (wcs_string2);						      \
+	free (mbs_offset2);						      \
+      }									      \
+    else								      \
+      {									      \
+	FREE_VAR (wcs_string2);						      \
+	FREE_VAR (mbs_offset2);						      \
+      }									      \
   } while (0)
 
 #endif
 
+
 static int
 PREFIX(re_search_2) (bufp, string1, size1, string2, size2, startpos, range,
 		     regs, stop)
@@ -5155,36 +5180,72 @@ PREFIX(re_search_2) (bufp, string1, size1, string2, size2, startpos, range,
      fill them with converted string.  */
   if (size1 != 0)
     {
-      wcs_string1 = REGEX_TALLOC (size1 + 1, CHAR_T);
-      mbs_offset1 = REGEX_TALLOC (size1 + 1, int);
-      is_binary = REGEX_TALLOC (size1 + 1, char);
+      if (size1 > MAX_ALLOCA_SIZE)
+	{
+	  wcs_string1 = TALLOC (size1 + 1, CHAR_T);
+	  mbs_offset1 = TALLOC (size1 + 1, int);
+	  is_binary = TALLOC (size1 + 1, char);
+	}
+      else
+	{
+	  wcs_string1 = REGEX_TALLOC (size1 + 1, CHAR_T);
+	  mbs_offset1 = REGEX_TALLOC (size1 + 1, int);
+	  is_binary = REGEX_TALLOC (size1 + 1, char);
+	}
       if (!wcs_string1 || !mbs_offset1 || !is_binary)
 	{
-	  FREE_VAR (wcs_string1);
-	  FREE_VAR (mbs_offset1);
-	  FREE_VAR (is_binary);
+	  if (size1 > MAX_ALLOCA_SIZE)
+	    {
+	      free (wcs_string1);
+	      free (mbs_offset1);
+	      free (is_binary);
+	    }
+	  else
+	    {
+	      FREE_VAR (wcs_string1);
+	      FREE_VAR (mbs_offset1);
+	      FREE_VAR (is_binary);
+	    }
 	  return -2;
 	}
       wcs_size1 = convert_mbs_to_wcs(wcs_string1, string1, size1,
 				     mbs_offset1, is_binary);
       wcs_string1[wcs_size1] = L'\0'; /* for a sentinel  */
-      FREE_VAR (is_binary);
+      if (size1 > MAX_ALLOCA_SIZE)
+	free (is_binary);
+      else
+	FREE_VAR (is_binary);
     }
   if (size2 != 0)
     {
-      wcs_string2 = REGEX_TALLOC (size2 + 1, CHAR_T);
-      mbs_offset2 = REGEX_TALLOC (size2 + 1, int);
-      is_binary = REGEX_TALLOC (size2 + 1, char);
+      if (size2 > MAX_ALLOCA_SIZE)
+	{
+	  wcs_string2 = TALLOC (size2 + 1, CHAR_T);
+	  mbs_offset2 = TALLOC (size2 + 1, int);
+	  is_binary = TALLOC (size2 + 1, char);
+	}
+      else
+	{
+	  wcs_string2 = REGEX_TALLOC (size2 + 1, CHAR_T);
+	  mbs_offset2 = REGEX_TALLOC (size2 + 1, int);
+	  is_binary = REGEX_TALLOC (size2 + 1, char);
+	}
       if (!wcs_string2 || !mbs_offset2 || !is_binary)
 	{
 	  FREE_WCS_BUFFERS ();
-	  FREE_VAR (is_binary);
+	  if (size2 > MAX_ALLOCA_SIZE)
+	    free (is_binary);
+	  else
+	    FREE_VAR (is_binary);
 	  return -2;
 	}
       wcs_size2 = convert_mbs_to_wcs(wcs_string2, string2, size2,
 				     mbs_offset2, is_binary);
       wcs_string2[wcs_size2] = L'\0'; /* for a sentinel  */
-      FREE_VAR (is_binary);
+      if (size2 > MAX_ALLOCA_SIZE)
+	free (is_binary);
+      else
+	FREE_VAR (is_binary);
     }
 #endif /* WCHAR */
 
@@ -5346,7 +5407,9 @@ PREFIX(re_search_2) (bufp, string1, size1, string2, size2, startpos, range,
 /* Use internationalized API instead of SYNTAX.  */
 # define WORDCHAR_P(d)							\
   (iswalnum ((wint_t)((d) == end1 ? *string2				\
-           : (d) == string2 - 1 ? *(end1 - 1) : *(d))) != 0)
+           : (d) == string2 - 1 ? *(end1 - 1) : *(d))) != 0		\
+   || ((d) == end1 ? *string2						\
+       : (d) == string2 - 1 ? *(end1 - 1) : *(d)) == L'_')
 #else /* BYTE */
 # define WORDCHAR_P(d)							\
   (SYNTAX ((d) == end1 ? *string2					\