#include <u.h>#include <libc.h>#include <thread.h>#include <llrb.h>#include "ccc.h" static char buf[1024]; voiderror(char *s, ...){	char *bp;	va_list a; 	bp = seprint(buf, buf+1024, "Error: %s:%d: ", filename, line);	va_start(a, s);	bp = vseprint(bp, buf+1024, s, a);	va_end(a);	*bp++ = '\n';	write(2, buf, bp - buf);	exits("error");} voidwarn(char *s, ...){	char *bp;	va_list a; 	bp = seprint(buf, buf+1024, "Warning: %s:%d: ", filename, line);	va_start(a, s);	bp = vseprint(bp, buf+1024, s, a);	va_end(a);	*bp++ = '\n';	write(2, buf, bp - buf);} void*emalloc(ulong s){	void *v; 	v = malloc(s);	if(v == nil)		error("Error allocating %lud: %r\n", s);	setmalloctag(v, getcallerpc(&s));	return v;} void*emallocz(ulong s){	void *v; 	v = malloc(s);	if(v == nil)		error("Error allocating %lud: %r", s);	memset(v, 0, s);	return v;} void*ecalloc(ulong n, ulong s){	void *v; 	v = calloc(n, s);	if(v == nil)		error("Error allocating %lud: %r", s);	setmalloctag(v, getcallerpc(&s));	return v;} void*erealloc(void *p, ulong s){	void *v; 	v = realloc(p, s);	if(v == nil)		error("Error re-allocating %lud: %r", s);	setrealloctag(v, getcallerpc(&s));	return v;} Rune*erunestrdup(Rune *s){	Rune *n; 	n = runestrdup(s);	if(n == nil)		error("Error duplicating string %s: %r", s);	setmalloctag(n, getcallerpc(&s));	return n;} voidefmtprint(Fmt *f, char *fmt, ...){	va_list va; 	va_start(va, fmt);	if(fmtvprint(f, fmt, va) < 0)		error("Printing error.");	va_end(va);}