X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fprintf-args.c;h=2259d53e5ed1b6cd1c857a8fb58b563cdbd7f307;hb=9f62a12a18eacd2e289aa1acbc5d7280f332f5a8;hp=6972cfd42ec3887c4d321f985f919625ddb98957;hpb=757bd39e4b07efaefaef3ef11027b7b7b40f5911;p=gnulib.git

diff --git a/lib/printf-args.c b/lib/printf-args.c
index 6972cfd42..2259d53e5 100644
--- a/lib/printf-args.c
+++ b/lib/printf-args.c
@@ -1,5 +1,5 @@
 /* Decomposed printf argument list.
-   Copyright (C) 1999, 2002-2003 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002-2003, 2005-2007 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
@@ -13,11 +13,9 @@
 
    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation,
-   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
 
 /* Specification.  */
 #include "printf-args.h"
@@ -28,7 +26,7 @@ STATIC
 int
 printf_fetchargs (va_list args, arguments *a)
 {
-  unsigned int i;
+  size_t i;
   argument *ap;
 
   for (i = 0, ap = &a->arg[0]; i < a->count; i++, ap++)
@@ -58,7 +56,7 @@ printf_fetchargs (va_list args, arguments *a)
       case TYPE_ULONGINT:
 	ap->a.a_ulongint = va_arg (args, unsigned long int);
 	break;
-#ifdef HAVE_LONG_LONG
+#if HAVE_LONG_LONG_INT
       case TYPE_LONGLONGINT:
 	ap->a.a_longlongint = va_arg (args, long long int);
 	break;
@@ -69,7 +67,7 @@ printf_fetchargs (va_list args, arguments *a)
       case TYPE_DOUBLE:
 	ap->a.a_double = va_arg (args, double);
 	break;
-#ifdef HAVE_LONG_DOUBLE
+#if HAVE_LONG_DOUBLE
       case TYPE_LONGDOUBLE:
 	ap->a.a_longdouble = va_arg (args, long double);
 	break;
@@ -77,17 +75,42 @@ printf_fetchargs (va_list args, arguments *a)
       case TYPE_CHAR:
 	ap->a.a_char = va_arg (args, int);
 	break;
-#ifdef HAVE_WINT_T
+#if HAVE_WINT_T
       case TYPE_WIDE_CHAR:
-	ap->a.a_wide_char = va_arg (args, wint_t);
+	/* Although ISO C 99 7.24.1.(2) says that wint_t is "unchanged by
+	   default argument promotions", this is not the case in mingw32,
+	   where wint_t is 'unsigned short'.  */
+	ap->a.a_wide_char =
+	  (sizeof (wint_t) < sizeof (int)
+	   ? va_arg (args, int)
+	   : va_arg (args, wint_t));
 	break;
 #endif
       case TYPE_STRING:
 	ap->a.a_string = va_arg (args, const char *);
+	/* A null pointer is an invalid argument for "%s", but in practice
+	   it occurs quite frequently in printf statements that produce
+	   debug output.  Use a fallback in this case.  */
+	if (ap->a.a_string == NULL)
+	  ap->a.a_string = "(NULL)";
 	break;
-#ifdef HAVE_WCHAR_T
+#if HAVE_WCHAR_T
       case TYPE_WIDE_STRING:
 	ap->a.a_wide_string = va_arg (args, const wchar_t *);
+	/* A null pointer is an invalid argument for "%ls", but in practice
+	   it occurs quite frequently in printf statements that produce
+	   debug output.  Use a fallback in this case.  */
+	if (ap->a.a_wide_string == NULL)
+	  {
+	    static const wchar_t wide_null_string[] =
+	      {
+		(wchar_t)'(',
+		(wchar_t)'N', (wchar_t)'U', (wchar_t)'L', (wchar_t)'L',
+		(wchar_t)')',
+		(wchar_t)0
+	      };
+	    ap->a.a_wide_string = wide_null_string;
+	  }
 	break;
 #endif
       case TYPE_POINTER:
@@ -105,7 +128,7 @@ printf_fetchargs (va_list args, arguments *a)
       case TYPE_COUNT_LONGINT_POINTER:
 	ap->a.a_count_longint_pointer = va_arg (args, long int *);
 	break;
-#ifdef HAVE_LONG_LONG
+#if HAVE_LONG_LONG_INT
       case TYPE_COUNT_LONGLONGINT_POINTER:
 	ap->a.a_count_longlongint_pointer = va_arg (args, long long int *);
 	break;