1 files changed, 651 insertions, 0 deletions

diff --git a/libcpp/internal.h b/libcpp/internal.h
new file mode 100644
index 0000000..9cd9be5
--- /dev/null
+++ b/libcpp/internal.h
@@ -0,0 +1,651 @@
+/* Part of CPP library.
+   Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
+   Free Software Foundation, Inc.
+
+This program is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* This header defines all the internal data structures and functions
+   that need to be visible across files.  It should not be used outside
+   cpplib.  */
+
+#ifndef LIBCPP_INTERNAL_H
+#define LIBCPP_INTERNAL_H
+
+#include "symtab.h"
+
+#if defined HAVE_ICONV_H && defined HAVE_ICONV
+#include <iconv.h>
+#else
+#define HAVE_ICONV 0
+typedef int iconv_t;  /* dummy */
+#endif
+
+struct directive;		/* Deliberately incomplete.  */
+struct pending_option;
+struct op;
+struct _cpp_strbuf;
+
+typedef bool (*convert_f) (iconv_t, const unsigned char *, size_t,
+			   struct _cpp_strbuf *);
+struct cset_converter
+{
+  convert_f func;
+  iconv_t cd;
+};
+
+#ifndef HAVE_UCHAR
+typedef unsigned char uchar;
+#endif
+#define U (const uchar *)  /* Intended use: U"string" */
+
+#define BITS_PER_CPPCHAR_T (CHAR_BIT * sizeof (cppchar_t))
+
+/* Test if a sign is valid within a preprocessing number.  */
+#define VALID_SIGN(c, prevc) \
+  (((c) == '+' || (c) == '-') && \
+   ((prevc) == 'e' || (prevc) == 'E' \
+    || (((prevc) == 'p' || (prevc) == 'P') \
+        && CPP_OPTION (pfile, extended_numbers))))
+
+#define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION)
+#define CPP_BUFFER(PFILE) ((PFILE)->buffer)
+#define CPP_BUF_COLUMN(BUF, CUR) ((CUR) - (BUF)->line_base)
+#define CPP_BUF_COL(BUF) CPP_BUF_COLUMN(BUF, (BUF)->cur)
+
+#define CPP_INCREMENT_LINE(PFILE, COLS_HINT) do { \
+    const struct line_maps *line_table = PFILE->line_table; \
+    const struct line_map *map = &line_table->maps[line_table->used-1]; \
+    unsigned int line = SOURCE_LINE (map, line_table->highest_line); \
+    linemap_line_start (PFILE->line_table, line + 1, COLS_HINT); \
+  } while (0)
+
+/* Maximum nesting of cpp_buffers.  We use a static limit, partly for
+   efficiency, and partly to limit runaway recursion.  */
+#define CPP_STACK_MAX 200
+
+/* Host alignment handling.  */
+struct dummy
+{
+  char c;
+  union
+  {
+    double d;
+    int *p;
+  } u;
+};
+
+#define DEFAULT_ALIGNMENT offsetof (struct dummy, u)
+#define CPP_ALIGN2(size, align) (((size) + ((align) - 1)) & ~((align) - 1))
+#define CPP_ALIGN(size) CPP_ALIGN2 (size, DEFAULT_ALIGNMENT)
+
+/* Each macro definition is recorded in a cpp_macro structure.
+   Variadic macros cannot occur with traditional cpp.  */
+struct cpp_macro
+{
+  /* Parameters, if any.  */
+  cpp_hashnode **params;
+
+  /* Replacement tokens (ISO) or replacement text (traditional).  See
+     comment at top of cpptrad.c for how traditional function-like
+     macros are encoded.  */
+  union
+  {
+    cpp_token *tokens;
+    const uchar *text;
+  } exp;
+
+  /* Definition line number.  */
+  fileline line;
+
+  /* Number of tokens in expansion, or bytes for traditional macros.  */
+  unsigned int count;
+
+  /* Number of parameters.  */
+  unsigned short paramc;
+
+  /* If a function-like macro.  */
+  unsigned int fun_like : 1;
+
+  /* If a variadic macro.  */
+  unsigned int variadic : 1;
+
+  /* If macro defined in system header.  */
+  unsigned int syshdr   : 1;
+
+  /* Nonzero if it has been expanded or had its existence tested.  */
+  unsigned int used     : 1;
+};
+
+#define _cpp_mark_macro_used(NODE) do {					\
+  if ((NODE)->type == NT_MACRO && !((NODE)->flags & NODE_BUILTIN))	\
+    (NODE)->value.macro->used = 1; } while (0)
+
+/* A generic memory buffer, and operations on it.  */
+typedef struct _cpp_buff _cpp_buff;
+struct _cpp_buff
+{
+  struct _cpp_buff *next;
+  unsigned char *base, *cur, *limit;
+};
+
+extern _cpp_buff *_cpp_get_buff (cpp_reader *, size_t);
+extern void _cpp_release_buff (cpp_reader *, _cpp_buff *);
+extern void _cpp_extend_buff (cpp_reader *, _cpp_buff **, size_t);
+extern _cpp_buff *_cpp_append_extend_buff (cpp_reader *, _cpp_buff *, size_t);
+extern void _cpp_free_buff (_cpp_buff *);
+extern unsigned char *_cpp_aligned_alloc (cpp_reader *, size_t);
+extern unsigned char *_cpp_unaligned_alloc (cpp_reader *, size_t);
+
+#define BUFF_ROOM(BUFF) (size_t) ((BUFF)->limit - (BUFF)->cur)
+#define BUFF_FRONT(BUFF) ((BUFF)->cur)
+#define BUFF_LIMIT(BUFF) ((BUFF)->limit)
+
+/* #include types.  */
+enum include_type {IT_INCLUDE, IT_INCLUDE_NEXT, IT_IMPORT, IT_CMDLINE};
+
+union utoken
+{
+  const cpp_token *token;
+  const cpp_token **ptoken;
+};
+
+/* A "run" of tokens; part of a chain of runs.  */
+typedef struct tokenrun tokenrun;
+struct tokenrun
+{
+  tokenrun *next, *prev;
+  cpp_token *base, *limit;
+};
+
+/* Accessor macros for struct cpp_context.  */
+#define FIRST(c) ((c)->u.iso.first)
+#define LAST(c) ((c)->u.iso.last)
+#define CUR(c) ((c)->u.trad.cur)
+#define RLIMIT(c) ((c)->u.trad.rlimit)
+
+typedef struct cpp_context cpp_context;
+struct cpp_context
+{
+  /* Doubly-linked list.  */
+  cpp_context *next, *prev;
+
+  union
+  {
+    /* For ISO macro expansion.  Contexts other than the base context
+       are contiguous tokens.  e.g. macro expansions, expanded
+       argument tokens.  */
+    struct
+    {
+      union utoken first;
+      union utoken last;
+    } iso;
+
+    /* For traditional macro expansion.  */
+    struct
+    {
+      const uchar *cur;
+      const uchar *rlimit;
+    } trad;
+  } u;
+
+  /* If non-NULL, a buffer used for storage related to this context.
+     When the context is popped, the buffer is released.  */
+  _cpp_buff *buff;
+
+  /* For a macro context, the macro node, otherwise NULL.  */
+  cpp_hashnode *macro;
+
+  /* True if utoken element is token, else ptoken.  */
+  bool direct_p;
+};
+
+struct lexer_state
+{
+  /* Nonzero if first token on line is CPP_HASH.  */
+  unsigned char in_directive;
+
+  /* Nonzero if in a directive that will handle padding tokens itself.
+     #include needs this to avoid problems with computed include and
+     spacing between tokens.  */
+  unsigned char directive_wants_padding;
+
+  /* True if we are skipping a failed conditional group.  */
+  unsigned char skipping;
+
+  /* Nonzero if in a directive that takes angle-bracketed headers.  */
+  unsigned char angled_headers;
+
+  /* Nonzero if in a #if or #elif directive.  */
+  unsigned char in_expression;
+
+  /* Nonzero to save comments.  Turned off if discard_comments, and in
+     all directives apart from #define.  */
+  unsigned char save_comments;
+
+  /* Nonzero if lexing __VA_ARGS__ is valid.  */
+  unsigned char va_args_ok;
+
+  /* Nonzero if lexing poisoned identifiers is valid.  */
+  unsigned char poisoned_ok;
+
+  /* Nonzero to prevent macro expansion.  */
+  unsigned char prevent_expansion;
+
+  /* Nonzero when parsing arguments to a function-like macro.  */
+  unsigned char parsing_args;
+
+  /* Nonzero to skip evaluating part of an expression.  */
+  unsigned int skip_eval;
+};
+
+/* Special nodes - identifiers with predefined significance.  */
+struct spec_nodes
+{
+  cpp_hashnode *n_defined;		/* defined operator */
+  cpp_hashnode *n_true;			/* C++ keyword true */
+  cpp_hashnode *n_false;		/* C++ keyword false */
+  cpp_hashnode *n__VA_ARGS__;		/* C99 vararg macros */
+};
+
+typedef struct _cpp_line_note _cpp_line_note;
+struct _cpp_line_note
+{
+  /* Location in the clean line the note refers to.  */
+  const uchar *pos;
+
+  /* Type of note.  The 9 'from' trigraph characters represent those
+     trigraphs, '\\' an escaped newline, ' ' an escaped newline with
+     intervening space, and anything else is invalid.  */
+  unsigned int type;
+};
+
+/* Represents the contents of a file cpplib has read in.  */
+struct cpp_buffer
+{
+  const uchar *cur;		/* Current location.  */
+  const uchar *line_base;	/* Start of current physical line.  */
+  const uchar *next_line;	/* Start of to-be-cleaned logical line.  */
+
+  const uchar *buf;		/* Entire character buffer.  */
+  const uchar *rlimit;		/* Writable byte at end of file.  */
+
+  _cpp_line_note *notes;	/* Array of notes.  */
+  unsigned int cur_note;	/* Next note to process.  */
+  unsigned int notes_used;	/* Number of notes.  */
+  unsigned int notes_cap;	/* Size of allocated array.  */
+
+  struct cpp_buffer *prev;
+
+  /* Pointer into the file table; non-NULL if this is a file buffer.
+     Used for include_next and to record control macros.  */
+  struct _cpp_file *file;
+
+  /* Value of if_stack at start of this file.
+     Used to prohibit unmatched #endif (etc) in an include file.  */
+  struct if_stack *if_stack;
+
+  /* True if we need to get the next clean line.  */
+  bool need_line;
+
+  /* True if we have already warned about C++ comments in this file.
+     The warning happens only for C89 extended mode with -pedantic on,
+     or for -Wtraditional, and only once per file (otherwise it would
+     be far too noisy).  */
+  unsigned int warned_cplusplus_comments : 1;
+
+  /* True if we don't process trigraphs and escaped newlines.  True
+     for preprocessed input, command line directives, and _Pragma
+     buffers.  */
+  unsigned int from_stage3 : 1;
+
+  /* At EOF, a buffer is automatically popped.  If RETURN_AT_EOF is
+     true, a CPP_EOF token is then returned.  Otherwise, the next
+     token from the enclosing buffer is returned.  */
+  unsigned int return_at_eof : 1;
+
+  /* One for a system header, two for a C system header file that therefore
+     needs to be extern "C" protected in C++, and zero otherwise.  */
+  unsigned char sysp;
+
+  /* The directory of the this buffer's file.  Its NAME member is not
+     allocated, so we don't need to worry about freeing it.  */
+  struct cpp_dir dir;
+
+  /* Descriptor for converting from the input character set to the
+     source character set.  */
+  struct cset_converter input_cset_desc;
+};
+
+/* A cpp_reader encapsulates the "state" of a pre-processor run.
+   Applying cpp_get_token repeatedly yields a stream of pre-processor
+   tokens.  Usually, there is only one cpp_reader object active.  */
+struct cpp_reader
+{
+  /* Top of buffer stack.  */
+  cpp_buffer *buffer;
+
+  /* Overlaid buffer (can be different after processing #include).  */
+  cpp_buffer *overlaid_buffer;
+
+  /* Lexer state.  */
+  struct lexer_state state;
+
+  /* Source line tracking.  */
+  struct line_maps *line_table;
+
+  /* The line of the '#' of the current directive.  */
+  fileline directive_line;
+
+  /* Memory buffers.  */
+  _cpp_buff *a_buff;		/* Aligned permanent storage.  */
+  _cpp_buff *u_buff;		/* Unaligned permanent storage.  */
+  _cpp_buff *free_buffs;	/* Free buffer chain.  */
+
+  /* Context stack.  */
+  struct cpp_context base_context;
+  struct cpp_context *context;
+
+  /* If in_directive, the directive if known.  */
+  const struct directive *directive;
+
+  /* Search paths for include files.  */
+  struct cpp_dir *quote_include;	/* "" */
+  struct cpp_dir *bracket_include;	/* <> */
+  struct cpp_dir no_search_path;	/* No path.  */
+
+  /* Chain of all hashed _cpp_file instances.  */
+  struct _cpp_file *all_files;
+
+  struct _cpp_file *main_file;
+
+  /* File and directory hash table.  */
+  struct htab *file_hash;
+  struct file_hash_entry *file_hash_entries;
+  unsigned int file_hash_entries_allocated, file_hash_entries_used;
+
+  /* Nonzero means don't look for #include "foo" the source-file
+     directory.  */
+  bool quote_ignores_source_dir;
+
+  /* Nonzero if any file has contained #pragma once or #import has
+     been used.  */
+  bool seen_once_only;
+
+  /* Multiple include optimization.  */
+  const cpp_hashnode *mi_cmacro;
+  const cpp_hashnode *mi_ind_cmacro;
+  bool mi_valid;
+
+  /* Lexing.  */
+  cpp_token *cur_token;
+  tokenrun base_run, *cur_run;
+  unsigned int lookaheads;
+
+  /* Nonzero prevents the lexer from re-using the token runs.  */
+  unsigned int keep_tokens;
+
+  /* Error counter for exit code.  */
+  unsigned int errors;
+
+  /* Buffer to hold macro definition string.  */
+  unsigned char *macro_buffer;
+  unsigned int macro_buffer_len;
+
+  /* Descriptor for converting from the source character set to the
+     execution character set.  */
+  struct cset_converter narrow_cset_desc;
+
+  /* Descriptor for converting from the source character set to the
+     wide execution character set.  */
+  struct cset_converter wide_cset_desc;
+
+  /* Date and time text.  Calculated together if either is requested.  */
+  const uchar *date;
+  const uchar *time;
+
+  /* EOF token, and a token forcing paste avoidance.  */
+  cpp_token avoid_paste;
+  cpp_token eof;
+
+  /* Opaque handle to the dependencies of mkdeps.c.  */
+  struct deps *deps;
+
+  /* Obstack holding all macro hash nodes.  This never shrinks.
+     See cpphash.c */
+  struct obstack hash_ob;
+
+  /* Obstack holding buffer and conditional structures.  This is a
+     real stack.  See cpplib.c.  */
+  struct obstack buffer_ob;
+
+  /* Pragma table - dynamic, because a library user can add to the
+     list of recognized pragmas.  */
+  struct pragma_entry *pragmas;
+
+  /* Call backs to cpplib client.  */
+  struct cpp_callbacks cb;
+
+  /* Identifier hash table.  */
+  struct ht *hash_table;
+
+  /* Expression parser stack.  */
+  struct op *op_stack, *op_limit;
+
+  /* User visible options.  */
+  struct cpp_options opts;
+
+  /* Special nodes - identifiers with predefined significance to the
+     preprocessor.  */
+  struct spec_nodes spec_nodes;
+
+  /* Whether cpplib owns the hashtable.  */
+  bool our_hashtable;
+
+  /* Traditional preprocessing output buffer (a logical line).  */
+  struct
+  {
+    uchar *base;
+    uchar *limit;
+    uchar *cur;
+    fileline first_line;
+  } out;
+
+  /* Used for buffer overlays by cpptrad.c.  */
+  const uchar *saved_cur, *saved_rlimit, *saved_line_base;
+
+  /* A saved list of the defined macros, for dependency checking
+     of precompiled headers.  */
+  struct cpp_savedstate *savedstate;
+};
+
+/* Character classes.  Based on the more primitive macros in safe-ctype.h.
+   If the definition of `numchar' looks odd to you, please look up the
+   definition of a pp-number in the C standard [section 6.4.8 of C99].
+
+   In the unlikely event that characters other than \r and \n enter
+   the set is_vspace, the macro handle_newline() in cpplex.c must be
+   updated.  */
+#define _dollar_ok(x)	((x) == '$' && CPP_OPTION (pfile, dollars_in_ident))
+
+#define is_idchar(x)	(ISIDNUM(x) || _dollar_ok(x))
+#define is_numchar(x)	ISIDNUM(x)
+#define is_idstart(x)	(ISIDST(x) || _dollar_ok(x))
+#define is_numstart(x)	ISDIGIT(x)
+#define is_hspace(x)	ISBLANK(x)
+#define is_vspace(x)	IS_VSPACE(x)
+#define is_nvspace(x)	IS_NVSPACE(x)
+#define is_space(x)	IS_SPACE_OR_NUL(x)
+
+/* This table is constant if it can be initialized at compile time,
+   which is the case if cpp was compiled with GCC >=2.7, or another
+   compiler that supports C99.  */
+#if HAVE_DESIGNATED_INITIALIZERS
+extern const unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
+#else
+extern unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
+#endif
+
+/* Macros.  */
+
+static inline int cpp_in_system_header (cpp_reader *);
+static inline int
+cpp_in_system_header (cpp_reader *pfile)
+{
+  return pfile->buffer ? pfile->buffer->sysp : 0;
+}
+#define CPP_PEDANTIC(PF) CPP_OPTION (PF, pedantic)
+#define CPP_WTRADITIONAL(PF) CPP_OPTION (PF, warn_traditional)
+
+/* In cpperror.c  */
+extern int _cpp_begin_message (cpp_reader *, int,
+			       source_location, unsigned int);
+
+/* In cppmacro.c */
+extern void _cpp_free_definition (cpp_hashnode *);
+extern bool _cpp_create_definition (cpp_reader *, cpp_hashnode *);
+extern void _cpp_pop_context (cpp_reader *);
+extern void _cpp_push_text_context (cpp_reader *, cpp_hashnode *,
+				    const uchar *, size_t);
+extern bool _cpp_save_parameter (cpp_reader *, cpp_macro *, cpp_hashnode *);
+extern bool _cpp_arguments_ok (cpp_reader *, cpp_macro *, const cpp_hashnode *,
+			       unsigned int);
+extern const uchar *_cpp_builtin_macro_text (cpp_reader *, cpp_hashnode *);
+int _cpp_warn_if_unused_macro (cpp_reader *, cpp_hashnode *, void *);
+/* In cpphash.c */
+extern void _cpp_init_hashtable (cpp_reader *, hash_table *);
+extern void _cpp_destroy_hashtable (cpp_reader *);
+
+/* In cppfiles.c */
+typedef struct _cpp_file _cpp_file;
+extern _cpp_file *_cpp_find_file (cpp_reader *, const char *fname,
+				  cpp_dir *start_dir, bool fake);
+extern bool _cpp_find_failed (_cpp_file *);
+extern void _cpp_mark_file_once_only (cpp_reader *, struct _cpp_file *);
+extern void _cpp_fake_include (cpp_reader *, const char *);
+extern bool _cpp_stack_file (cpp_reader *, _cpp_file*, bool);
+extern bool _cpp_stack_include (cpp_reader *, const char *, int,
+				enum include_type);
+extern int _cpp_compare_file_date (cpp_reader *, const char *, int);
+extern void _cpp_report_missing_guards (cpp_reader *);
+extern void _cpp_init_files (cpp_reader *);
+extern void _cpp_cleanup_files (cpp_reader *);
+extern void _cpp_pop_file_buffer (cpp_reader *, struct _cpp_file *);
+extern bool _cpp_save_file_entries (cpp_reader *pfile, FILE *f);
+extern bool _cpp_read_file_entries (cpp_reader *, FILE *);
+
+/* In cppexp.c */
+extern bool _cpp_parse_expr (cpp_reader *);
+extern struct op *_cpp_expand_op_stack (cpp_reader *);
+
+/* In cpplex.c */
+extern void _cpp_process_line_notes (cpp_reader *, int);
+extern void _cpp_clean_line (cpp_reader *);
+extern bool _cpp_get_fresh_line (cpp_reader *);
+extern bool _cpp_skip_block_comment (cpp_reader *);
+extern cpp_token *_cpp_temp_token (cpp_reader *);
+extern const cpp_token *_cpp_lex_token (cpp_reader *);
+extern cpp_token *_cpp_lex_direct (cpp_reader *);
+extern int _cpp_equiv_tokens (const cpp_token *, const cpp_token *);
+extern void _cpp_init_tokenrun (tokenrun *, unsigned int);
+
+/* In cppinit.c.  */
+extern void _cpp_maybe_push_include_file (cpp_reader *);
+
+/* In cpplib.c */
+extern int _cpp_test_assertion (cpp_reader *, unsigned int *);
+extern int _cpp_handle_directive (cpp_reader *, int);
+extern void _cpp_define_builtin (cpp_reader *, const char *);
+extern char ** _cpp_save_pragma_names (cpp_reader *);
+extern void _cpp_restore_pragma_names (cpp_reader *, char **);
+extern void _cpp_do__Pragma (cpp_reader *);
+extern void _cpp_init_directives (cpp_reader *);
+extern void _cpp_init_internal_pragmas (cpp_reader *);
+extern void _cpp_do_file_change (cpp_reader *, enum lc_reason, const char *,
+				 unsigned int, unsigned int);
+extern void _cpp_pop_buffer (cpp_reader *);
+
+/* In cpptrad.c.  */
+extern bool _cpp_scan_out_logical_line (cpp_reader *, cpp_macro *);
+extern bool _cpp_read_logical_line_trad (cpp_reader *);
+extern void _cpp_overlay_buffer (cpp_reader *pfile, const uchar *, size_t);
+extern void _cpp_remove_overlay (cpp_reader *);
+extern bool _cpp_create_trad_definition (cpp_reader *, cpp_macro *);
+extern bool _cpp_expansions_different_trad (const cpp_macro *,
+					    const cpp_macro *);
+extern uchar *_cpp_copy_replacement_text (const cpp_macro *, uchar *);
+extern size_t _cpp_replacement_text_len (const cpp_macro *);
+
+/* In cppcharset.c.  */
+extern cppchar_t _cpp_valid_ucn (cpp_reader *, const uchar **,
+				 const uchar *, int);
+extern void _cpp_destroy_iconv (cpp_reader *);
+extern uchar *_cpp_convert_input (cpp_reader *, const char *, uchar *,
+				  size_t, size_t, off_t *);
+extern const char *_cpp_default_encoding (void);
+
+/* Utility routines and macros.  */
+#define DSC(str) (const uchar *)str, sizeof str - 1
+#define xnew(T)		(T *) xmalloc (sizeof(T))
+#define xcnew(T)	(T *) xcalloc (1, sizeof(T))
+#define xnewvec(T, N)	(T *) xmalloc (sizeof(T) * (N))
+#define xcnewvec(T, N)	(T *) xcalloc (N, sizeof(T))
+#define xobnew(O, T)	(T *) obstack_alloc (O, sizeof(T))
+
+/* These are inline functions instead of macros so we can get type
+   checking.  */
+static inline int ustrcmp (const uchar *, const uchar *);
+static inline int ustrncmp (const uchar *, const uchar *, size_t);
+static inline size_t ustrlen (const uchar *);
+static inline uchar *uxstrdup (const uchar *);
+static inline uchar *ustrchr (const uchar *, int);
+static inline int ufputs (const uchar *, FILE *);
+
+static inline int
+ustrcmp (const uchar *s1, const uchar *s2)
+{
+  return strcmp ((const char *)s1, (const char *)s2);
+}
+
+static inline int
+ustrncmp (const uchar *s1, const uchar *s2, size_t n)
+{
+  return strncmp ((const char *)s1, (const char *)s2, n);
+}
+
+static inline size_t
+ustrlen (const uchar *s1)
+{
+  return strlen ((const char *)s1);
+}
+
+static inline uchar *
+uxstrdup (const uchar *s1)
+{
+  return (uchar *) xstrdup ((const char *)s1);
+}
+
+static inline uchar *
+ustrchr (const uchar *s1, int c)
+{
+  return (uchar *) strchr ((const char *)s1, c);
+}
+
+static inline int
+ufputs (const uchar *s, FILE *f)
+{
+  return fputs ((const char *)s, f);
+}
+
+#endif /* ! LIBCPP_INTERNAL_H */