exits successfully lol

util.c

@@ -261,6 +261,7 @@ igroup(Blk *b, Ins *i, Ins **i0, Ins **i1)
 
 	ib = b->ins;
 	ie = ib + b->nins;
+
 	switch (i->op) {
 	case Oblit0:
 		*i0 = i;
@@ -285,8 +286,12 @@ igroup(Blk *b, Ins *i, Ins **i0, Ins **i1)
 		*i0 = i;
 		for (; i<ie && i->op != Ocall; i++)
 			;
-		assert(i < ie);
-		*i1 = i + 1;
+		if (b->jmp.type == Jtail) {
+		  *i1 = ie;
+		} else {
+		  assert(i < ie);
+		  *i1 = i + 1;
+		}
 		return;
 	case Osel1:
 		for (; i>ib && (i-1)->op == Osel1; i--)