@@ -14,6 +14,8 @@ WITH REGARD TO THIS SOFTWARE.

 #define TRIM 0x0100

 #define LENGTH 0x10000

+#define LABELS 512

+

 typedef unsigned char Uint8;

 typedef signed char Sint8;

 typedef unsigned short Uint16;

@@ -31,7 +33,7 @@ typedef struct {

 typedef struct {

 	Uint8 data[LENGTH], mlen;

 	Uint16 ptr, length, llen;

-	Label labels[512];

+	Label labels[LABELS];

 	Macro macros[256];

 } Program;

@@ -178,6 +180,8 @@ makelabel(char *name)

 		return error("Label name is hex number", name);

 	if(findopcode(name) || scmp(name, "BRK", 4) || !slen(name))

 		return error("Label name is invalid", name);

+	if(p.llen == LABELS)

+		return error("Too many labels", name);

 	l = &p.labels[p.llen++];

 	l->addr = addr;

 	l->refs = 0;