access TLS cache variable directly and not via a helper function when using compiler with native TLS support to work around an apparent bug in g++

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@55501 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/string.cpp

@@ -60,6 +60,12 @@ const size_t wxString::npos = (size_t) -1;
 
 #if wxUSE_STRING_POS_CACHE
 
+#ifdef wxHAS_COMPILER_TLS
+
+wxTLS_TYPE(wxString::Cache) wxString::ms_cache;
+
+#else // !wxHAS_COMPILER_TLS
+
 struct wxStrCacheInitializer
 {
     wxStrCacheInitializer()
@@ -72,6 +78,8 @@ struct wxStrCacheInitializer
 
 static wxStrCacheInitializer gs_stringCacheInit;
 
+#endif // wxHAS_COMPILER_TLS/!wxHAS_COMPILER_TLS
+
 // gdb seems to be unable to display thread-local variables correctly, at least
 // not my 6.4.98 version under amd64, so provide this debugging helper to do it
 #ifdef __WXDEBUG__