* dbus/dbus-sysdeps.h:

* dbus/dbus-sysdeps.c:
  add _dbus_printf_length (patch from Peter Kümmel
  <syntheticpp at gmx dot net>)

3 files changed, 20 insertions, 2 deletions

diff --git a/dbus/dbus-string.c b/dbus/dbus-string.c
index 287fe1cc..eec27b80 100644
--- a/dbus/dbus-string.c
+++ b/dbus/dbus-string.c
@@ -1193,7 +1193,6 @@ _dbus_string_append_printf_valist  (DBusString        *str,
                                     va_list            args)
 {
   int len;
-  char c;
   va_list args_copy;
 
   DBUS_STRING_PREAMBLE (str);
@@ -1201,7 +1200,7 @@ _dbus_string_append_printf_valist  (DBusString        *str,
   DBUS_VA_COPY (args_copy, args);
 
   /* Measure the message length without terminating nul */
-  len = vsnprintf (&c, 1, format, args);
+  len = _dbus_printf_length (format, args);
 
   if (!_dbus_string_lengthen (str, len))
     {
diff --git a/dbus/dbus-sysdeps.c b/dbus/dbus-sysdeps.c
index e28ea667..cd0f7cf1 100644
--- a/dbus/dbus-sysdeps.c
+++ b/dbus/dbus-sysdeps.c
@@ -2983,6 +2983,21 @@ _dbus_full_duplex_pipe (int        *fd1,
 #endif
 }
 
+
+#ifndef DBUS_WIN
+/**
+ * Measure the message length without terminating nul
+ */
+int _dbus_printf_length (const char *format,
+                         va_list args)
+{
+  char c;
+  return vsnprintf (&c, 1, format, args);
+}
+#endif
+
+
+
 /** @} end of sysdeps */
 
 /* tests in dbus-sysdeps-util.c */
diff --git a/dbus/dbus-sysdeps.h b/dbus/dbus-sysdeps.h
index 03ed28ec..9bc3e485 100644
--- a/dbus/dbus-sysdeps.h
+++ b/dbus/dbus-sysdeps.h
@@ -272,6 +272,10 @@ void _dbus_fd_set_close_on_exec (int fd);
 
 void _dbus_exit (int code) _DBUS_GNUC_NORETURN;
 
+int _dbus_printf_length (const char *format,
+                         va_list args);
+
+
 /**
  * Portable struct with stat() results
  */