merge from gcc

[platform/upstream/binutils.git] / libiberty / vasprintf.c

diff --git a/libiberty/vasprintf.c b/libiberty/vasprintf.c
index 32faa84..7eaf2b1 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
@@ -27,6 +27,9 @@ Boston, MA 02111-1307, USA.  */
 #else
 #include <varargs.h>
 #endif
+#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>
@@ -43,14 +46,29 @@ 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 PARAMS ((char **, const char *, va_list));
 
 static int
 int_vasprintf (result, format, args)
      char **result;
      const char *format;
-     va_list *args;
+     va_list args;
 {
   const char *p = format;
   /* Add one to make sure that it is never zero, which might cause malloc
@@ -58,7 +76,11 @@ 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')
     {
@@ -120,14 +142,17 @@ 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
@@ -140,7 +165,7 @@ vasprintf (result, format, args)
      va_list args;
 #endif
 {
-  return int_vasprintf (result, format, &args);
+  return int_vasprintf (result, format, args);
 }
 
 #ifdef TEST