2.5-18.1

1 files changed, 98 insertions, 133 deletions

diff --git a/posix/regex_internal.h b/posix/regex_internal.h
index 0ccd8d3665..3b575c3c48 100644
--- a/posix/regex_internal.h
+++ b/posix/regex_internal.h
@@ -1,5 +1,5 @@
 /* Extended regular expression matching and search library.
-   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
 
@@ -39,6 +39,20 @@
 #if defined HAVE_WCTYPE_H || defined _LIBC
 # include <wctype.h>
 #endif /* HAVE_WCTYPE_H || _LIBC */
+#if defined HAVE_STDBOOL_H || defined _LIBC
+# include <stdbool.h>
+#endif /* HAVE_STDBOOL_H || _LIBC */
+#if defined HAVE_STDINT_H || defined _LIBC
+# include <stdint.h>
+#endif /* HAVE_STDINT_H || _LIBC */
+#if defined _LIBC
+# include <bits/libc-lock.h>
+#else
+# define __libc_lock_define(CLASS,NAME)
+# define __libc_lock_init(NAME) do { } while (0)
+# define __libc_lock_lock(NAME) do { } while (0)
+# define __libc_lock_unlock(NAME) do { } while (0)
+#endif
 
 /* In case that the system doesn't have isblank().  */
 #if !defined _LIBC && !defined HAVE_ISBLANK && !defined isblank
@@ -60,7 +74,7 @@
 # ifdef _LIBC
 #  undef gettext
 #  define gettext(msgid) \
-  INTUSE(__dcgettext) (INTUSE(_libc_intl_domainname), msgid, LC_MESSAGES)
+  INTUSE(__dcgettext) (_libc_intl_domainname, msgid, LC_MESSAGES)
 # endif
 #else
 # define gettext(msgid) (msgid)
@@ -72,6 +86,11 @@
 # define gettext_noop(String) String
 #endif
 
+/* For loser systems without the definition.  */
+#ifndef SIZE_MAX
+# define SIZE_MAX ((size_t) -1)
+#endif
+
 #if (defined MB_CUR_MAX && HAVE_LOCALE_H && HAVE_WCTYPE_H && HAVE_WCHAR_H && HAVE_WCRTOMB && HAVE_MBRTOWC && HAVE_WCSCOLL) || _LIBC
 # define RE_ENABLE_I18N
 #endif
@@ -83,8 +102,6 @@
 # define inline
 #endif
 
-/* Number of bits in a byte.  */
-#define BYTE_BITS 8
 /* Number of single byte character.  */
 #define SBC_MAX 256
 
@@ -114,26 +131,28 @@
 extern const char __re_error_msgid[] attribute_hidden;
 extern const size_t __re_error_msgid_idx[] attribute_hidden;
 
-/* Number of bits in an unsinged int.  */
-#define UINT_BITS (sizeof (unsigned int) * BYTE_BITS)
-/* Number of unsigned int in an bit_set.  */
-#define BITSET_UINTS ((SBC_MAX + UINT_BITS - 1) / UINT_BITS)
-typedef unsigned int bitset[BITSET_UINTS];
-typedef unsigned int *re_bitset_ptr_t;
-typedef const unsigned int *re_const_bitset_ptr_t;
-
-#define bitset_set(set,i) (set[i / UINT_BITS] |= 1 << i % UINT_BITS)
-#define bitset_clear(set,i) (set[i / UINT_BITS] &= ~(1 << i % UINT_BITS))
-#define bitset_contain(set,i) (set[i / UINT_BITS] & (1 << i % UINT_BITS))
-#define bitset_empty(set) memset (set, 0, sizeof (unsigned int) * BITSET_UINTS)
-#define bitset_set_all(set) \
-  memset (set, 255, sizeof (unsigned int) * BITSET_UINTS)
-#define bitset_copy(dest,src) \
-  memcpy (dest, src, sizeof (unsigned int) * BITSET_UINTS)
-static inline void bitset_not (bitset set);
-static inline void bitset_merge (bitset dest, const bitset src);
-static inline void bitset_not_merge (bitset dest, const bitset src);
-static inline void bitset_mask (bitset dest, const bitset src);
+/* An integer used to represent a set of bits.  It must be unsigned,
+   and must be at least as wide as unsigned int.  */
+typedef unsigned long int bitset_word_t;
+/* All bits set in a bitset_word_t.  */
+#define BITSET_WORD_MAX ULONG_MAX
+/* Number of bits in a bitset_word_t.  */
+#define BITSET_WORD_BITS (sizeof (bitset_word_t) * CHAR_BIT)
+/* Number of bitset_word_t in a bit_set.  */
+#define BITSET_WORDS (SBC_MAX / BITSET_WORD_BITS)
+typedef bitset_word_t bitset_t[BITSET_WORDS];
+typedef bitset_word_t *re_bitset_ptr_t;
+typedef const bitset_word_t *re_const_bitset_ptr_t;
+
+#define bitset_set(set,i) \
+  (set[i / BITSET_WORD_BITS] |= (bitset_word_t) 1 << i % BITSET_WORD_BITS)
+#define bitset_clear(set,i) \
+  (set[i / BITSET_WORD_BITS] &= ~((bitset_word_t) 1 << i % BITSET_WORD_BITS))
+#define bitset_contain(set,i) \
+  (set[i / BITSET_WORD_BITS] & ((bitset_word_t) 1 << i % BITSET_WORD_BITS))
+#define bitset_empty(set) memset (set, '\0', sizeof (bitset_t))
+#define bitset_set_all(set) memset (set, '\xff', sizeof (bitset_t))
+#define bitset_copy(dest,src) memcpy (dest, src, sizeof (bitset_t))
 
 #define PREV_WORD_CONSTRAINT 0x0001
 #define PREV_NOTWORD_CONSTRAINT 0x0002
@@ -143,18 +162,21 @@ static inline void bitset_mask (bitset dest, const bitset src);
 #define NEXT_NEWLINE_CONSTRAINT 0x0020
 #define PREV_BEGBUF_CONSTRAINT 0x0040
 #define NEXT_ENDBUF_CONSTRAINT 0x0080
-#define DUMMY_CONSTRAINT 0x0100
+#define WORD_DELIM_CONSTRAINT 0x0100
+#define NOT_WORD_DELIM_CONSTRAINT 0x0200
 
 typedef enum
 {
   INSIDE_WORD = PREV_WORD_CONSTRAINT | NEXT_WORD_CONSTRAINT,
   WORD_FIRST = PREV_NOTWORD_CONSTRAINT | NEXT_WORD_CONSTRAINT,
   WORD_LAST = PREV_WORD_CONSTRAINT | NEXT_NOTWORD_CONSTRAINT,
+  INSIDE_NOTWORD = PREV_NOTWORD_CONSTRAINT | NEXT_NOTWORD_CONSTRAINT,
   LINE_FIRST = PREV_NEWLINE_CONSTRAINT,
   LINE_LAST = NEXT_NEWLINE_CONSTRAINT,
   BUF_FIRST = PREV_BEGBUF_CONSTRAINT,
   BUF_LAST = NEXT_ENDBUF_CONSTRAINT,
-  WORD_DELIM = DUMMY_CONSTRAINT
+  WORD_DELIM = WORD_DELIM_CONSTRAINT,
+  NOT_WORD_DELIM = NOT_WORD_DELIM_CONSTRAINT
 } re_context_type;
 
 typedef struct
@@ -186,16 +208,16 @@ typedef enum
   OP_CLOSE_SUBEXP = EPSILON_BIT | 1,
   OP_ALT = EPSILON_BIT | 2,
   OP_DUP_ASTERISK = EPSILON_BIT | 3,
-  OP_DUP_PLUS = EPSILON_BIT | 4,
-  OP_DUP_QUESTION = EPSILON_BIT | 5,
-  ANCHOR = EPSILON_BIT | 6,
-  OP_DELETED_SUBEXP = EPSILON_BIT | 7,
+  ANCHOR = EPSILON_BIT | 4,
 
   /* Tree type, these are used only by tree. */
   CONCAT = 16,
+  SUBEXP = 17,
 
   /* Token type, these are used only by token.  */
-  OP_OPEN_BRACKET = 17,
+  OP_DUP_PLUS = 18,
+  OP_DUP_QUESTION,
+  OP_OPEN_BRACKET,
   OP_CLOSE_BRACKET,
   OP_CHARSET_RANGE,
   OP_OPEN_DUP_NUM,
@@ -284,6 +306,7 @@ typedef struct
   unsigned int duplicated : 1;
   unsigned int opt_subexp : 1;
 #ifdef RE_ENABLE_I18N
+  unsigned int accept_mb : 1;
   /* These 2 bits can be moved into the union if needed (e.g. if running out
      of bits; move opr.c to opr.c.c and move the flags to opr.c.flags).  */
   unsigned int mb_partial : 1;
@@ -292,8 +315,6 @@ typedef struct
 } re_token_t;
 
 #define IS_EPSILON_NODE(type) ((type) & EPSILON_BIT)
-#define ACCEPT_MB_NODE(type) \
-  ((type) >= OP_PERIOD && (type) <= OP_UTF8_PERIOD)
 
 struct re_string_t
 {
@@ -337,7 +358,7 @@ struct re_string_t
      the beginning of the input string.  */
   unsigned int tip_context;
   /* The translation passed as a part of an argument of re_compile_pattern.  */
-  unsigned RE_TRANSLATE_TYPE trans;
+  RE_TRANSLATE_TYPE trans;
   /* Copy of re_dfa_t's word_char.  */
   re_const_bitset_ptr_t word_char;
   /* 1 if REG_ICASE.  */
@@ -364,45 +385,18 @@ typedef struct re_dfa_t re_dfa_t;
 # endif
 #endif
 
-#ifndef RE_NO_INTERNAL_PROTOTYPES
-static reg_errcode_t re_string_allocate (re_string_t *pstr, const char *str,
-					 int len, int init_len,
-					 RE_TRANSLATE_TYPE trans, int icase,
-					 const re_dfa_t *dfa)
-     internal_function;
-static reg_errcode_t re_string_construct (re_string_t *pstr, const char *str,
-					  int len, RE_TRANSLATE_TYPE trans,
-					  int icase, const re_dfa_t *dfa)
-     internal_function;
-static reg_errcode_t re_string_reconstruct (re_string_t *pstr, int idx,
-					    int eflags) internal_function;
 static reg_errcode_t re_string_realloc_buffers (re_string_t *pstr,
 						int new_buf_len)
      internal_function;
-# ifdef RE_ENABLE_I18N
+#ifdef RE_ENABLE_I18N
 static void build_wcs_buffer (re_string_t *pstr) internal_function;
 static int build_wcs_upper_buffer (re_string_t *pstr) internal_function;
-# endif /* RE_ENABLE_I18N */
+#endif /* RE_ENABLE_I18N */
 static void build_upper_buffer (re_string_t *pstr) internal_function;
 static void re_string_translate_buffer (re_string_t *pstr) internal_function;
-static void re_string_destruct (re_string_t *pstr) internal_function;
-# ifdef RE_ENABLE_I18N
-static int re_string_elem_size_at (const re_string_t *pstr, int idx)
-     internal_function __attribute ((pure));
-static inline int re_string_char_size_at (const re_string_t *pstr, int idx)
-     internal_function __attribute ((pure));
-static inline wint_t re_string_wchar_at (const re_string_t *pstr, int idx)
-     internal_function __attribute ((pure));
-# endif /* RE_ENABLE_I18N */
 static unsigned int re_string_context_at (const re_string_t *input, int idx,
 					  int eflags)
      internal_function __attribute ((pure));
-static unsigned char re_string_peek_byte_case (const re_string_t *pstr,
-					       int idx)
-     internal_function __attribute ((pure));
-static unsigned char re_string_fetch_byte_case (re_string_t *pstr)
-     internal_function __attribute ((pure));
-#endif
 #define re_string_peek_byte(pstr, offset) \
   ((pstr)->mbs[(pstr)->cur_idx + offset])
 #define re_string_fetch_byte(pstr) \
@@ -420,6 +414,21 @@ static unsigned char re_string_fetch_byte_case (re_string_t *pstr)
 #define re_string_skip_bytes(pstr,idx) ((pstr)->cur_idx += (idx))
 #define re_string_set_index(pstr,idx) ((pstr)->cur_idx = (idx))
 
+#include <alloca.h>
+
+#ifndef _LIBC
+# if HAVE_ALLOCA
+/* The OS usually guarantees only one guard page at the bottom of the stack,
+   and a page size can be as small as 4096 bytes.  So we cannot safely
+   allocate anything larger than 4096 bytes.  Also care for the possibility
+   of a few compiler-allocated temporary stack slots.  */
+#  define __libc_use_alloca(n) ((n) < 4032)
+# else
+/* alloca is implemented with malloc, so just use malloc.  */
+#  define __libc_use_alloca(n) 0
+# endif
+#endif
+
 #define re_malloc(t,n) ((t *) malloc ((n) * sizeof (t)))
 #define re_realloc(p,t,n) ((t *) realloc (p, (n) * sizeof (t)))
 #define re_free(p) free (p)
@@ -429,15 +438,14 @@ struct bin_tree_t
   struct bin_tree_t *parent;
   struct bin_tree_t *left;
   struct bin_tree_t *right;
+  struct bin_tree_t *first;
+  struct bin_tree_t *next;
+
+  re_token_t token;
 
   /* `node_idx' is the index in dfa->nodes, if `type' == 0.
      Otherwise `type' indicate the type of this node.  */
-  re_token_type_t type;
   int node_idx;
-
-  int first;
-  int next;
-  re_node_set eclosure;
 };
 typedef struct bin_tree_t bin_tree_t;
 
@@ -486,7 +494,7 @@ struct re_dfastate_t
   re_node_set non_eps_nodes;
   re_node_set inveclosure;
   re_node_set *entrance_nodes;
-  struct re_dfastate_t **trtable;
+  struct re_dfastate_t **trtable, **word_trtable;
   unsigned int context : 4;
   unsigned int halt : 1;
   /* If this state can accept `multi byte'.
@@ -496,7 +504,6 @@ struct re_dfastate_t
   /* If this state has backreference node(s).  */
   unsigned int has_backref : 1;
   unsigned int has_constraint : 1;
-  unsigned int word_trtable : 1;
 };
 typedef struct re_dfastate_t re_dfastate_t;
 
@@ -533,7 +540,6 @@ typedef struct
 {
   int str_idx;
   int node;
-  int next_last_offset;
   state_array_t *path;
   int alasts; /* Allocation size of LASTS.  */
   int nlasts; /* The number of LASTS.  */
@@ -556,9 +562,9 @@ typedef struct
   /* The string object corresponding to the input string.  */
   re_string_t input;
 #if defined _LIBC || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
-  re_dfa_t *const dfa;
+  const re_dfa_t *const dfa;
 #else
-  re_dfa_t *dfa;
+  const re_dfa_t *dfa;
 #endif
   /* EFLAGS of the argument of regexec.  */
   int eflags;
@@ -605,8 +611,8 @@ struct re_fail_stack_t
 struct re_dfa_t
 {
   re_token_t *nodes;
-  int nodes_alloc;
-  int nodes_len;
+  size_t nodes_alloc;
+  size_t nodes_len;
   int *nexts;
   int *org_indices;
   re_node_set *edests;
@@ -624,13 +630,12 @@ struct re_dfa_t
 
   /* number of subexpressions `re_nsub' is in regex_t.  */
   unsigned int state_hash_mask;
-  int states_alloc;
   int init_node;
   int nbackref; /* The number of backreference in this dfa.  */
 
   /* Bitmap expressing which backreference is used.  */
-  unsigned int used_bkref_map;
-  unsigned int completed_bkref_map;
+  bitset_word_t used_bkref_map;
+  bitset_word_t completed_bkref_map;
 
   unsigned int has_plural_match : 1;
   /* If this dfa has "multibyte node", which is a backreference or
@@ -641,52 +646,20 @@ struct re_dfa_t
   unsigned int map_notascii : 1;
   unsigned int word_ops_used : 1;
   int mb_cur_max;
-  bitset word_char;
+  bitset_t word_char;
   reg_syntax_t syntax;
   int *subexp_map;
 #ifdef DEBUG
   char* re_str;
 #endif
+  __libc_lock_define (, lock)
 };
 
-#ifndef RE_NO_INTERNAL_PROTOTYPES
-static reg_errcode_t re_node_set_alloc (re_node_set *set, int size) internal_function;
-static reg_errcode_t re_node_set_init_1 (re_node_set *set, int elem) internal_function;
-static reg_errcode_t re_node_set_init_2 (re_node_set *set, int elem1,
-					 int elem2) internal_function;
 #define re_node_set_init_empty(set) memset (set, '\0', sizeof (re_node_set))
-static reg_errcode_t re_node_set_init_copy (re_node_set *dest,
-					    const re_node_set *src) internal_function;
-static reg_errcode_t re_node_set_add_intersect (re_node_set *dest,
-						const re_node_set *src1,
-						const re_node_set *src2) internal_function;
-static reg_errcode_t re_node_set_init_union (re_node_set *dest,
-					     const re_node_set *src1,
-					     const re_node_set *src2) internal_function;
-static reg_errcode_t re_node_set_merge (re_node_set *dest,
-					const re_node_set *src) internal_function;
-static int re_node_set_insert (re_node_set *set, int elem) internal_function;
-static int re_node_set_insert_last (re_node_set *set,
-				    int elem) internal_function;
-static int re_node_set_compare (const re_node_set *set1,
-				const re_node_set *set2)
-     internal_function __attribute ((pure));
-static int re_node_set_contains (const re_node_set *set, int elem)
-     internal_function __attribute ((pure));
-static void re_node_set_remove_at (re_node_set *set, int idx) internal_function;
 #define re_node_set_remove(set,id) \
   (re_node_set_remove_at (set, re_node_set_contains (set, id) - 1))
 #define re_node_set_empty(p) ((p)->nelem = 0)
 #define re_node_set_free(set) re_free ((set)->elems)
-static int re_dfa_add_node (re_dfa_t *dfa, re_token_t token, int mode) internal_function;
-static re_dfastate_t *re_acquire_state (reg_errcode_t *err, re_dfa_t *dfa,
-					const re_node_set *nodes) internal_function;
-static re_dfastate_t *re_acquire_state_context (reg_errcode_t *err,
-						re_dfa_t *dfa,
-						const re_node_set *nodes,
-						unsigned int context) internal_function;
-static void free_state (re_dfastate_t *state) internal_function;
-#endif
 
 
 typedef enum
@@ -712,41 +685,33 @@ typedef struct
 
 /* Inline functions for bitset operation.  */
 static inline void
-bitset_not (bitset set)
+bitset_not (bitset_t set)
 {
   int bitset_i;
-  for (bitset_i = 0; bitset_i < BITSET_UINTS; ++bitset_i)
+  for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i)
     set[bitset_i] = ~set[bitset_i];
 }
 
 static inline void
-bitset_merge (bitset dest, const bitset src)
+bitset_merge (bitset_t dest, const bitset_t src)
 {
   int bitset_i;
-  for (bitset_i = 0; bitset_i < BITSET_UINTS; ++bitset_i)
+  for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i)
     dest[bitset_i] |= src[bitset_i];
 }
 
 static inline void
-bitset_not_merge (bitset dest, const bitset src)
-{
-  int i;
-  for (i = 0; i < BITSET_UINTS; ++i)
-    dest[i] |= ~src[i];
-}
-
-static inline void
-bitset_mask (bitset dest, const bitset src)
+bitset_mask (bitset_t dest, const bitset_t src)
 {
   int bitset_i;
-  for (bitset_i = 0; bitset_i < BITSET_UINTS; ++bitset_i)
+  for (bitset_i = 0; bitset_i < BITSET_WORDS; ++bitset_i)
     dest[bitset_i] &= src[bitset_i];
 }
 
-#if defined RE_ENABLE_I18N && !defined RE_NO_INTERNAL_PROTOTYPES
+#ifdef RE_ENABLE_I18N
 /* Inline functions for re_string.  */
 static inline int
-internal_function
+internal_function __attribute ((pure))
 re_string_char_size_at (const re_string_t *pstr, int idx)
 {
   int byte_idx;
@@ -759,7 +724,7 @@ re_string_char_size_at (const re_string_t *pstr, int idx)
 }
 
 static inline wint_t
-internal_function
+internal_function __attribute ((pure))
 re_string_wchar_at (const re_string_t *pstr, int idx)
 {
   if (pstr->mb_cur_max == 1)
@@ -768,14 +733,14 @@ re_string_wchar_at (const re_string_t *pstr, int idx)
 }
 
 static int
-internal_function
+internal_function __attribute ((pure))
 re_string_elem_size_at (const re_string_t *pstr, int idx)
 {
-#ifdef _LIBC
+# ifdef _LIBC
   const unsigned char *p, *extra;
   const int32_t *table, *indirect;
   int32_t tmp;
-# include <locale/weight.h>
+#  include <locale/weight.h>
   uint_fast32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
 
   if (nrules != 0)
@@ -790,7 +755,7 @@ re_string_elem_size_at (const re_string_t *pstr, int idx)
       return p - pstr->mbs - idx;
     }
   else
-#endif /* _LIBC */
+# endif /* _LIBC */
     return 1;
 }
 #endif /* RE_ENABLE_I18N */