2007-03-23 Andreas Tobler <a.tobler@schweiz.org>

[pf3gnuchains/gcc-fork.git] / libiberty / vasprintf.c

diff --git a/libiberty/vasprintf.c b/libiberty/vasprintf.c
index c34585d..b6cb94e 100644 (file)
--- a/libiberty/vasprintf.c
+++ b/libiberty/vasprintf.c
@@ -1,6 +1,6 @@
 /* Like vsprintf but provides a pointer to malloc'd storage, which must
    be freed by the caller.
-   Copyright (C) 1994 Free Software Foundation, Inc.
+   Copyright (C) 1994, 2003 Free Software Foundation, Inc.
 
 This file is part of the libiberty library.
 Libiberty is free software; you can redistribute it and/or
@@ -15,20 +15,21 @@ Library General Public License for more details.
 
 You should have received a copy of the GNU Library General Public
 License along with libiberty; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+Boston, MA 02110-1301, USA.  */
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 #include <ansidecl.h>
-#ifdef ANSI_PROTOTYPES
 #include <stdarg.h>
-#else
-#include <varargs.h>
+#if !defined (va_copy) && defined (__va_copy)
+# define va_copy(d,s)  __va_copy((d),(s))
 #endif
 #include <stdio.h>
+#ifdef HAVE_STRING_H
 #include <string.h>
+#endif
 #ifdef HAVE_STDLIB_H
 #include <stdlib.h>
 #else
@@ -41,14 +42,26 @@ extern PTR malloc ();
 int global_total_width;
 #endif
 
+/*
+
+@deftypefn Extension int vasprintf (char **@var{resptr}, const char *@var{format}, va_list @var{args})
+
+Like @code{vsprintf}, but instead of passing a pointer to a buffer,
+you pass a pointer to a pointer.  This function will compute the size
+of the buffer needed, allocate memory with @code{malloc}, and store a
+pointer to the allocated memory in @code{*@var{resptr}}.  The value
+returned is the same as @code{vsprintf} would return.  If memory could
+not be allocated, minus one is returned and @code{NULL} is stored in
+@code{*@var{resptr}}.
+
+@end deftypefn
 
-static int int_vasprintf PARAMS ((char **, const char *, va_list *));
+*/
+
+static int int_vasprintf (char **, const char *, va_list);
 
 static int
-int_vasprintf (result, format, args)
-     char **result;
-     const char *format;
-     va_list *args;
+int_vasprintf (char **result, const char *format, va_list args)
 {
   const char *p = format;
   /* Add one to make sure that it is never zero, which might cause malloc
@@ -56,7 +69,11 @@ int_vasprintf (result, format, args)
   int total_width = strlen (format) + 1;
   va_list ap;
 
-  memcpy ((PTR) &ap, (PTR) args, sizeof (va_list));
+#ifdef va_copy
+  va_copy (ap, args);
+#else
+  memcpy ((PTR) &ap, (PTR) &args, sizeof (va_list));
+#endif
 
   while (*p != '\0')
     {
@@ -118,59 +135,53 @@ int_vasprintf (result, format, args)
          p++;
        }
     }
+#ifdef va_copy
+  va_end (ap);
+#endif
 #ifdef TEST
   global_total_width = total_width;
 #endif
-  *result = malloc (total_width);
+  *result = (char *) malloc (total_width);
   if (*result != NULL)
-    return vsprintf (*result, format, *args);
+    return vsprintf (*result, format, args);
   else
-    return 0;
+    return -1;
 }
 
 int
-vasprintf (result, format, args)
-     char **result;
-     const char *format;
+vasprintf (char **result, const char *format,
 #if defined (_BSD_VA_LIST_) && defined (__FreeBSD__)
-     _BSD_VA_LIST_ args;
+           _BSD_VA_LIST_ args)
 #else
-     va_list args;
+           va_list args)
 #endif
 {
-  return int_vasprintf (result, format, &args);
+  return int_vasprintf (result, format, args);
 }
 
 #ifdef TEST
-static void checkit PARAMS ((const char *, ...));
-
-static void
-checkit VPARAMS ((const char* format, ...))
+static void ATTRIBUTE_PRINTF_1
+checkit (const char *format, ...)
 {
-  va_list args;
   char *result;
-#ifndef ANSI_PROTOTYPES
-  const char *format;
-#endif
-
-  VA_START (args, format);
-
-#ifndef ANSI_PROTOTYPES
-  format = va_arg (args, const char *);
-#endif
-
+  VA_OPEN (args, format);
+  VA_FIXEDARG (args, const char *, format);
   vasprintf (&result, format, args);
+  VA_CLOSE (args);
+
   if (strlen (result) < (size_t) global_total_width)
     printf ("PASS: ");
   else
     printf ("FAIL: ");
   printf ("%d %s\n", global_total_width, result);
+
+  free (result);
 }
 
-extern int main PARAMS ((void));
+extern int main (void);
 
 int
-main ()
+main (void)
 {
   checkit ("%d", 0x12345678);
   checkit ("%200d", 5);