+ // Microsoft has helpfully disabled support for "%n" in their CRT by
+ // default starting from VC8 and somehow even calling
+ // _set_printf_count_output() doesn't help here, so don't use "%n" at all
+ // with it.
+#if wxCHECK_VISUALC_VERSION(8)
+ #define wxNO_PRINTF_PERCENT_N
+#endif // VC8+
+
+ // Similarly, many modern Linux distributions ship with g++ that uses
+ // -D_FORTIFY_SOURCE=2 flag by default and this option prevents "%n" from
+ // being used in a string outside of read-only memory, meaning that it
+ // can't be used in wxString to which we (may, depending on build options)
+ // assign it, so also disable testing of "%n" in this case lest we die with
+ // an abort inside vswprintf().
+#if defined(_FORTIFY_SOURCE)
+ #if _FORTIFY_SOURCE >= 2
+ #define wxNO_PRINTF_PERCENT_N
+ #endif
+#endif
+
+#ifndef wxNO_PRINTF_PERCENT_N