#include <assert.h>
-template<unsigned int k> static inline int gr_log2_const() { assert(0); }
+template<unsigned int k> static inline int gr_log2_const() { assert(0); return 0; }
template<> static inline int gr_log2_const<1>() { return 0; }
template<> static inline int gr_log2_const<2>() { return 1; }