-void __assert_fail(const char* expr, const char* file, unsigned int line) __attribute__((noinline, noreturn));
+
+#define assert_msg(cond, msg) \
+ if (!(cond)) { \
+ __assert_fail(msg, __FILE__, __LINE__); \
+ }
+void
+__assert_fail(const char* expr, const char* file, unsigned int line)
+ __attribute__((noinline, noreturn));