#define optional_argument 2
#if defined (__STDC__) && __STDC__
-#ifdef __GNU_LIBRARY__
+/* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is
+ undefined, we haven't run the autoconf check so provide the
+ declaration without arguments. If it is 0, we checked and failed
+ to find the declaration so provide a fully prototyped one. If it
+ is 1, we found it so don't provide any declaration at all. */
+#if defined (__GNU_LIBRARY__) || (defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT)
/* Many other libraries have conflicting prototypes for getopt, with
differences in the consts, in stdlib.h. To avoid compilation
errors, only prototype getopt for the GNU C library. */
extern int getopt (int argc, char *const *argv, const char *shortopts);
#else /* not __GNU_LIBRARY__ */
+# if !defined (HAVE_DECL_GETOPT)
extern int getopt ();
+# endif
#endif /* __GNU_LIBRARY__ */
extern int getopt_long (int argc, char *const *argv, const char *shortopts,
const struct option *longopts, int *longind);
/* Build an argument vector from a string. Allocates memory using
malloc. Use freeargv to free the vector. */
-extern char **buildargv PARAMS ((char *));
+extern char **buildargv PARAMS ((char *)) ATTRIBUTE_MALLOC;
/* Free a vector returned by buildargv. */
/* Duplicate an argument vector. Allocates memory using malloc. Use
freeargv to free the vector. */
-extern char **dupargv PARAMS ((char **));
+extern char **dupargv PARAMS ((char **)) ATTRIBUTE_MALLOC;
/* Return the last component of a path name. Note that we can't use a
across different systems, sometimes as "char *" and sometimes as
"const char *" */
-#if defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__)
+/* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is
+ undefined, we haven't run the autoconf check so provide the
+ declaration without arguments. If it is 0, we checked and failed
+ to find the declaration so provide a fully prototyped one. If it
+ is 1, we found it so don't provide any declaration at all. */
+#if defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__) || (defined (HAVE_DECL_BASENAME) && !HAVE_DECL_BASENAME)
extern char *basename PARAMS ((const char *));
#else
+# if !defined (HAVE_DECL_BASENAME)
extern char *basename ();
+# endif
#endif
/* Concatenate an arbitrary number of strings, up to (char *) NULL.
Allocates memory using xmalloc. */
-extern char *concat PARAMS ((const char *, ...));
+extern char *concat PARAMS ((const char *, ...)) ATTRIBUTE_MALLOC;
/* Check whether two file descriptors refer to the same file. */
extern int fdmatch PARAMS ((int fd1, int fd2));
+/* Get the working directory. The result is cached, so don't call
+ chdir() between calls to getpwd(). */
+
+extern char * getpwd PARAMS ((void));
+
/* Get the amount of time the process has run, in microseconds. */
extern long get_run_time PARAMS ((void));
/* Choose a temporary directory to use for scratch files. */
-extern char *choose_temp_base PARAMS ((void));
+extern char *choose_temp_base PARAMS ((void)) ATTRIBUTE_MALLOC;
+
+/* Return a temporary file name or NULL if unable to create one. */
+
+extern char *make_temp_file PARAMS ((const char *)) ATTRIBUTE_MALLOC;
/* Allocate memory filled with spaces. Allocates using malloc. */
/* Exit, calling all the functions registered with xatexit. */
-#ifndef __GNUC__
-extern void xexit PARAMS ((int status));
-#else
-void xexit PARAMS ((int status)) __attribute__ ((noreturn));
-#endif
+extern void xexit PARAMS ((int status)) ATTRIBUTE_NORETURN;
/* Set the program name used by xmalloc. */
#ifdef ANSI_PROTOTYPES
/* Get a definition for size_t. */
#include <stddef.h>
+/* Get a definition for va_list. */
+#include <stdarg.h>
#endif
-extern PTR xmalloc PARAMS ((size_t));
-
-/* Reallocate memory without fail. This works like xmalloc.
+extern PTR xmalloc PARAMS ((size_t)) ATTRIBUTE_MALLOC;
- FIXME: We do not declare the parameter types for the same reason as
- xmalloc. */
+/* Reallocate memory without fail. This works like xmalloc. Note,
+ realloc type functions are not suitable for attribute malloc since
+ they may return the same address across multiple calls. */
extern PTR xrealloc PARAMS ((PTR, size_t));
/* Allocate memory without fail and set it to zero. This works like
xmalloc. */
-extern PTR xcalloc PARAMS ((size_t, size_t));
+extern PTR xcalloc PARAMS ((size_t, size_t)) ATTRIBUTE_MALLOC;
/* Copy a string into a memory buffer without fail. */
-extern char *xstrdup PARAMS ((const char *));
+extern char *xstrdup PARAMS ((const char *)) ATTRIBUTE_MALLOC;
+
+/* Copy an existing memory buffer to a new memory buffer without fail. */
+
+extern PTR xmemdup PARAMS ((const PTR, size_t, size_t)) ATTRIBUTE_MALLOC;
/* hex character manipulation routines */
extern int pwait PARAMS ((int, int *, int));
+/* Like sprintf but provides a pointer to malloc'd storage, which must
+ be freed by the caller. */
+
+extern int asprintf PARAMS ((char **, const char *, ...)) ATTRIBUTE_PRINTF_2;
+
+/* Like vsprintf but provides a pointer to malloc'd storage, which
+ must be freed by the caller. */
+
+extern int vasprintf PARAMS ((char **, const char *, va_list))
+ ATTRIBUTE_PRINTF(2,0);
+
#ifdef __cplusplus
}
#endif
/* Symbol concatenation utilities.
- Copyright (C) 1998, Free Software Foundation, Inc.
+ Copyright (C) 1998, 2000 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
#ifndef SYM_CAT_H
#define SYM_CAT_H
-#if defined (__STDC__) || defined (ALMOST_STDC)
+#if defined (__STDC__) || defined (ALMOST_STDC) || defined (HAVE_STRINGIZE)
#define CONCAT2(a,b) a##b
#define CONCAT3(a,b,c) a##b##c
#define CONCAT4(a,b,c,d) a##b##c##d
#define STRINGX(s) #s
#else
+/* Note one should never pass extra whitespace to the CONCATn macros,
+ e.g. CONCAT2(foo, bar) because traditonal C will keep the space between
+ the two labels instead of concatenating them. Instead, make sure to
+ write CONCAT2(foo,bar). */
#define CONCAT2(a,b) a/**/b
#define CONCAT3(a,b,c) a/**/b/**/c
#define CONCAT4(a,b,c,d) a/**/b/**/c/**/d
-#define STRINGX(s) "?"
+#define STRINGX(s) "s"
#endif
#define XCONCAT2(a,b) CONCAT2(a,b)
#define XCONCAT3(a,b,c) CONCAT3(a,b,c)
#define XCONCAT4(a,b,c,d) CONCAT4(a,b,c,d)
+/* Note the layer of indirection here is typically used to allow
+ stringification of the expansion of macros. I.e. "#define foo
+ bar", "XSTRING(foo)", to yield "bar". Be aware that this only
+ works for __STDC__, not for traditional C which will still resolve
+ to "foo". */
#define XSTRING(s) STRINGX(s)
-#endif SYM_CAT_H
+#endif /* SYM_CAT_H */
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