- Get rid of sprintf usage in default_dbg_vprintf.

- This make tracing macro usage safe in crt sprintf implementation and simplify overall codepath (no need for intermediate buffer).
- Solution inspired by hackbunny's suggestion, fixes bug 3632.
See issue #3632 for more details.

svn path=/trunk/; revision=35131

reactos/lib/3rdparty/libwine/debug.c

@@ -42,6 +42,16 @@ DbgPrint(
     IN ...
 );
 
+ULONG
+__cdecl
+vDbgPrintExWithPrefix(
+  IN LPCSTR Prefix,
+  IN ULONG ComponentId,
+  IN ULONG Level,
+  IN LPCSTR Format,
+  IN va_list ap);
+
+
 static const char * const debug_classes[] = { "fixme", "err", "warn", "trace" };
 
 #define MAX_DEBUG_OPTIONS 256
@@ -384,10 +394,7 @@ static const char *default_dbgstr_wn( const WCHAR *str, int n )
 /* default implementation of wine_dbg_vprintf */
 static int default_dbg_vprintf( const char *format, va_list args )
 {
-    char buffer[512];
-    vsnprintf( buffer, sizeof(buffer), format, args );
-    buffer[sizeof(buffer) - 1] = '\0';
-    return DbgPrint( "%s", buffer );
+    return vDbgPrintExWithPrefix(NULL, -1, 0, format, args);
 }