#pragma	lib	"liberror.a"#pragma src "/sys/src/liberror" typedef struct Error Error; enum {	Nerrors	= 32,}; struct Error {	jmp_buf label[Nerrors];	int	nerr;}; char*	estrdup(char*);void*	emalloc(int);void*	erealloc(void*,int);void	errinit(Error* e);void	noerror(void);void	error(char* msg, ...);void	warn(char* msg, ...);#define	catcherror()	setjmp((*__ep)->label[(*__ep)->nerr++])extern Error**	__ep;