diff --git a/include/wx/string.h b/include/wx/string.h
index d4c054e71d..d6eb81baa1 100644
--- a/include/wx/string.h
+++ b/include/wx/string.h
@@ -3919,7 +3919,12 @@ wxDEFINE_ALL_COMPARISONS(const char *, const wxCStrData&, wxCMP_CHAR_CSTRDATA)
 // Implement hashing using C++11 std::hash<>.
 // ----------------------------------------------------------------------------
 
-#if __cplusplus >= 201103L || wxCHECK_VISUALC_VERSION(10)
+// Check for both compiler and standard library support for C++11: normally the
+// former implies the latter but under Mac OS X < 10.7 C++11 compiler can (and
+// even has to be) used with non-C++11 standard library, so explicitly exclude
+// this case.
+#if (__cplusplus >= 201103L || wxCHECK_VISUALC_VERSION(10)) \
+        && ( (!defined __GLIBCXX__) || (__GLIBCXX__ > 20070719) )
 
 // Don't do this if ToStdWstring() is not available. We could work around it
 // but, presumably, if using std::wstring is undesirable, then so is using