# 
# patch "sanity.hh"
#  from [6b56adc96cdc67cfec9cb5e0d6cc5c1cc1e3f823]
#    to [d20631b056fb0bb0005451bcc4fdd775a9d17388]
# 
========================================================================
--- sanity.hh	6b56adc96cdc67cfec9cb5e0d6cc5c1cc1e3f823
+++ sanity.hh	d20631b056fb0bb0005451bcc4fdd775a9d17388
@@ -243,9 +243,14 @@
 // them.)  However, while fake_M does nothing directly, it doesn't pass its
 // line argument to ##; therefore, its line argument is fully expanded before
 // being passed to real_M.
+#ifdef __GNUC__
+// even worse, this is g++ only!
 #define real_M(obj, line) Musing<typeof(obj)> this_is_a_musing_fnord_object_ ## line (obj, #obj, __FILE__, __LINE__, __PRETTY_FUNCTION__)
 #define fake_M(obj, line) real_M(obj, line)
 #define MM(obj) fake_M(obj, __LINE__)
+#else
+#define MM(obj) /* */ 
+#endif
 
 void dump(std::string const & obj, std::string & out);