X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=libiberty%2Fvasprintf.c;h=cc04248b5cddf42dc46b2b45553dda66148f73bc;hb=21af24c8371a3e040f6f548ddfafb20114442c28;hp=32faa84a4a2c609c22d7d126fa966c528ae90382;hpb=843f21be9e7bc8a61562440f33e9f49d071dafe1;p=deliverable%2Fbinutils-gdb.git

diff --git a/libiberty/vasprintf.c b/libiberty/vasprintf.c
index 32faa84a4a..cc04248b5c 100644
--- 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) 1994-2019 Free Software Foundation, Inc.
 
 This file is part of the libiberty library.
 Libiberty is free software; you can redistribute it and/or
@@ -14,18 +14,17 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 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.  */
+License along with libiberty; see the file COPYING.LIB.  If 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
@@ -34,124 +33,68 @@ Boston, MA 02111-1307, USA.  */
 #ifdef HAVE_STDLIB_H
 #include <stdlib.h>
 #else
-extern unsigned long strtoul ();
 extern PTR malloc ();
 #endif
 #include "libiberty.h"
+#include "vprintf-support.h"
 
 #ifdef TEST
 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
-     to return NULL.  */
-  int total_width = strlen (format) + 1;
-  va_list ap;
-
-  memcpy ((PTR) &ap, (PTR) args, sizeof (va_list));
-
-  while (*p != '\0')
-    {
-      if (*p++ == '%')
-	{
-	  while (strchr ("-+ #0", *p))
-	    ++p;
-	  if (*p == '*')
-	    {
-	      ++p;
-	      total_width += abs (va_arg (ap, int));
-	    }
-	  else
-	    total_width += strtoul (p, (char **) &p, 10);
-	  if (*p == '.')
-	    {
-	      ++p;
-	      if (*p == '*')
-		{
-		  ++p;
-		  total_width += abs (va_arg (ap, int));
-		}
-	      else
-	      total_width += strtoul (p, (char **) &p, 10);
-	    }
-	  while (strchr ("hlL", *p))
-	    ++p;
-	  /* Should be big enough for any format specifier except %s and floats.  */
-	  total_width += 30;
-	  switch (*p)
-	    {
-	    case 'd':
-	    case 'i':
-	    case 'o':
-	    case 'u':
-	    case 'x':
-	    case 'X':
-	    case 'c':
-	      (void) va_arg (ap, int);
-	      break;
-	    case 'f':
-	    case 'e':
-	    case 'E':
-	    case 'g':
-	    case 'G':
-	      (void) va_arg (ap, double);
-	      /* Since an ieee double can have an exponent of 307, we'll
-		 make the buffer wide enough to cover the gross case. */
-	      total_width += 307;
-	      break;
-	    case 's':
-	      total_width += strlen (va_arg (ap, char *));
-	      break;
-	    case 'p':
-	    case 'n':
-	      (void) va_arg (ap, char *);
-	      break;
-	    }
-	  p++;
-	}
-    }
+  int total_width = libiberty_vprintf_buffer_size (format, args);
 #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 ATTRIBUTE_PRINTF_1
-checkit VPARAMS ((const char *format, ...))
+checkit (const char *format, ...)
 {
   char *result;
-  VA_OPEN (args, format);
-  VA_FIXEDARG (args, const char *, format);
+  va_list args;
+  va_start (args, format);
   vasprintf (&result, format, args);
-  VA_CLOSE (args);
+  va_end (args);
 
   if (strlen (result) < (size_t) global_total_width)
     printf ("PASS: ");
@@ -162,10 +105,10 @@ checkit VPARAMS ((const char *format, ...))
   free (result);
 }
 
-extern int main PARAMS ((void));
+extern int main (void);
 
 int
-main ()
+main (void)
 {
   checkit ("%d", 0x12345678);
   checkit ("%200d", 5);