- fprintf(stderr, "%s(%u): _assert(): " format "\n", __FILE__, __LINE__, ## __VA_ARGS__); \
- throw __FILE__ "(" _assert__(__LINE__) "): _assert(" #expr ")"; \
+ fprintf(stderr, $("%s(%u): _assert(): " format "\n"), __FILE__, __LINE__, ## __VA_ARGS__); \
+ throw $(__FILE__ "(" _assert__(__LINE__) "): _assert(" #expr ")"); \