@@ -15,6 +15,7 @@ WITH REGARD TO THIS SOFTWARE.

 #define LENGTH 0x10000

 #define LABELS 512

+#define MACROS 256

 typedef unsigned char Uint8;

 typedef signed char Sint8;

@@ -31,10 +32,10 @@ typedef struct {

 } Label;

 typedef struct {

-	Uint8 data[LENGTH], mlen;

-	Uint16 ptr, length, llen;

+	Uint8 data[LENGTH];

+	Uint16 ptr, length, llen, mlen;

 	Label labels[LABELS];

-	Macro macros[256];

+	Macro macros[MACROS];

 } Program;

 Program p;

@@ -158,6 +159,8 @@ makemacro(char *name, FILE *f)

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

 	if(findopcode(name) || scmp(name, "BRK", 4) || !slen(name) || scmp(name, "include", 8))

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

+	if(p.mlen == MACROS)

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

 	m = &p.macros[p.mlen++];

 	scpy(name, m->name, 64);

 	while(fscanf(f, "%63s", word) == 1) {