2001-10-19 H.J. Lu <hjl@gnu.org>

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

diff --git a/libiberty/vasprintf.c b/libiberty/vasprintf.c
index c34585d..d438225 100644 (file)
--- a/libiberty/vasprintf.c
+++ b/libiberty/vasprintf.c
@@ -28,7 +28,9 @@ Boston, MA 02111-1307, USA.  */
 #include <varargs.h>
 #endif
 #include <stdio.h>
+#ifdef HAVE_STRING_H
 #include <string.h>
+#endif
 #ifdef HAVE_STDLIB_H
 #include <stdlib.h>
 #else
@@ -41,6 +43,21 @@ 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, zero is returned and @code{NULL} is stored in
+@code{*@var{resptr}}.
+
+@end deftypefn
+
+*/
 
 static int int_vasprintf PARAMS ((char **, const char *, va_list *));
 
@@ -142,29 +159,22 @@ 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 VPARAMS ((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));