#define elog(elevel, ...)  \
	do { \
	  if (no_report) \
	    break; \
		pg_prevent_errno_in_scope(); \
		elog_start(__FILE__, __LINE__, PG_FUNCNAME_MACRO); \
		elog_finish(elevel, __VA_ARGS__); \
		if (__builtin_constant_p(elevel) && (elevel) >= ERROR) \
			pg_unreachable(); \
	} while(0)