diff --git a/test/args.go b/test/args.go
index 684cc46009..0e9b9a315a 100644
--- a/test/args.go
+++ b/test/args.go
@@ -8,12 +8,12 @@ package main
 
 func main() {
 	if sys.argc() != 3 {
-		panic "argc"
+		panic("argc")
 	}
 	if sys.argv(1) != "arg1" {
-		panic "arg1"
+		panic("arg1")
 	}
 	if sys.argv(2) != "arg2" {
-		panic "arg2"
+		panic("arg2")
 	}
 }
diff --git a/test/bugs/bug027.go b/test/bugs/bug027.go
index e260e2d48a..33005a2406 100644
--- a/test/bugs/bug027.go
+++ b/test/bugs/bug027.go
@@ -39,7 +39,7 @@ func main() {
 	i3 := new(I); i3.val = 3333;
 	i4 := new(I); i4.val = 44444;
 	v := New();
-	print "hi\n";
+	print("hi\n");
 	v.Insert(i4);
 	v.Insert(i3);
 	v.Insert(i2);
@@ -48,10 +48,10 @@ func main() {
 	for i := 0; i < v.nelem; i++ {
 		var x *I;
 		x = v.At(i);
-		print i, " ", x.val, "\n";  // prints correct list
+		print(i, " ", x.val, "\n");  // prints correct list
 	}
 	for i := 0; i < v.nelem; i++ {
-		print i, " ", I(v.At(i)).val, "\n"; // always prints 5 - bad code - should be *I()
+		print(i, " ", I(v.At(i)).val, "\n"); // always prints 5 - bad code - should be *I()
 	}
 }
 /*
diff --git a/test/bugs/bug054.go b/test/bugs/bug054.go
index 8179cf0f41..a91773e224 100644
--- a/test/bugs/bug054.go
+++ b/test/bugs/bug054.go
@@ -39,6 +39,6 @@ func main() {
 	s.name = "foo";
 	s.fields = v;
 	if s.field(0).name != "hi" {
-		panic "bad name"
+		panic("bad name")
 	}
 }
diff --git a/test/bugs/bug060.go b/test/bugs/bug060.go
index 5afdb488fd..dddd23b29f 100644
--- a/test/bugs/bug060.go
+++ b/test/bugs/bug060.go
@@ -11,7 +11,7 @@ func main() {
 	m[0] = 0;
 	m[0]++;
 	if m[0] != 1 {
-		print "map does not increment";
+		print("map does not increment");
 		sys.exit(1)
 	}
 }
diff --git a/test/bugs/bug064.go b/test/bugs/bug064.go
index 41c130d8dd..38c2188dd2 100644
--- a/test/bugs/bug064.go
+++ b/test/bugs/bug064.go
@@ -18,6 +18,6 @@ main()
 	b := 2;
 	a, b = swap(swap(a, b));
 	if a != 2 || b != 1 {
-		panic "bad swap";
+		panic("bad swap");
 	}
 }
diff --git a/test/bugs/bug070.go b/test/bugs/bug070.go
index 6cf55386b3..cdd5fc3748 100644
--- a/test/bugs/bug070.go
+++ b/test/bugs/bug070.go
@@ -10,16 +10,16 @@ func main() {
 	var i, j, k int;
 	outer:
 	for k=0; k<2; k++ {
-		print "outer loop top k ", k, "\n";
-		if k != 0 { panic "k not zero" }  // inner loop breaks this one every time
+		print("outer loop top k ", k, "\n");
+		if k != 0 { panic("k not zero") }  // inner loop breaks this one every time
 		for i=0; i<2; i++ {
-			if i != 0 { panic "i not zero" }  // loop breaks every time
-			print "inner loop top i ", i, "\n";
+			if i != 0 { panic("i not zero") }  // loop breaks every time
+			print("inner loop top i ", i, "\n");
 			if true {
-				print "do break\n";
+				print("do break\n");
 				break outer;
 			}
 		}
 	}
-	print "broke\n";
+	print("broke\n");
 }
diff --git a/test/bugs/bug074.go b/test/bugs/bug074.go
index 947001cd42..87008f084d 100644
--- a/test/bugs/bug074.go
+++ b/test/bugs/bug074.go
@@ -8,5 +8,5 @@ package main
 
 func main() {
 	x := string('a', 'b', '\n');
-	print x;
+	print(x);
 }
diff --git a/test/bugs/bug085.go b/test/bugs/bug085.go
index e803a50a2a..c1133fe928 100644
--- a/test/bugs/bug085.go
+++ b/test/bugs/bug085.go
@@ -9,7 +9,7 @@ package P
 var x int
 
 func foo() {
-	print P.x;  // P should be defined between the outermost "universe" scope and the global scope
+	print(P.x);  // P should be defined between the outermost "universe" scope and the global scope
 }
 
 /*
diff --git a/test/bugs/bug086.go b/test/bugs/bug086.go
index 8b03a3b9e7..ef50c0c594 100644
--- a/test/bugs/bug086.go
+++ b/test/bugs/bug086.go
@@ -14,7 +14,7 @@ func f() int {
 }
 
 func main() {
-	print f(), "\n";
+	print(f(), "\n");
 }
 
 /*
diff --git a/test/chan/fifo.go b/test/chan/fifo.go
index d6d6d704a2..01fc016cfb 100644
--- a/test/chan/fifo.go
+++ b/test/chan/fifo.go
@@ -17,7 +17,7 @@ func AsynchFifo() {
 	}
 	for i := 0; i < N; i++ {
 		if <-ch != i {
-			print "bad receive\n";
+			print("bad receive\n");
 			sys.exit(1);
 		}
 	}
@@ -26,7 +26,7 @@ func AsynchFifo() {
 func Chain(ch *chan<- int, val int, in *chan<- int, out *chan-< int) {
 	<-in;
 	if <-ch != val {
-		panic val
+		panic(val)
 	}
 	out -< 1
 }
diff --git a/test/chan/nonblock.go b/test/chan/nonblock.go
index 89ec306af4..61dd06a043 100644
--- a/test/chan/nonblock.go
+++ b/test/chan/nonblock.go
@@ -14,7 +14,7 @@ func pause() {
 }
 
 func i32receiver(c *chan int32) {
-	if <-c != 123 { panic "i32 value" }
+	if <-c != 123 { panic("i32 value") }
 }
 
 func i32sender(c *chan int32) {
@@ -22,7 +22,7 @@ func i32sender(c *chan int32) {
 }
 
 func i64receiver(c *chan int64) {
-	if <-c != 123456 { panic "i64 value" }
+	if <-c != 123456 { panic("i64 value") }
 }
 
 func i64sender(c *chan int64) {
@@ -30,7 +30,7 @@ func i64sender(c *chan int64) {
 }
 
 func breceiver(c *chan bool) {
-	if ! <-c { panic "b value" }
+	if ! <-c { panic("b value") }
 }
 
 func bsender(c *chan bool) {
@@ -38,7 +38,7 @@ func bsender(c *chan bool) {
 }
 
 func sreceiver(c *chan string) {
-	if <-c != "hello" { panic "s value" }
+	if <-c != "hello" { panic("s value") }
 }
 
 func ssender(c *chan string) {
@@ -58,55 +58,55 @@ func main() {
 	cs := new(chan string);
 
 	i32, ok = <-c32;
-	if ok { panic "blocked i32sender" }
+	if ok { panic("blocked i32sender") }
 
 	i64, ok = <-c64;
-	if ok { panic "blocked i64sender" }
+	if ok { panic("blocked i64sender") }
 
 	b, ok = <-cb;
-	if ok { panic "blocked bsender" }
+	if ok { panic("blocked bsender") }
 
 	s, ok = <-cs;
-	if ok { panic "blocked ssender" }
+	if ok { panic("blocked ssender") }
 
 	go i32receiver(c32);
 	pause();
 	ok = c32 -< 123;
-	if !ok { panic "i32receiver" }
+	if !ok { panic("i32receiver") }
 	go i32sender(c32);
 	pause();
 	i32, ok = <-c32;
-	if !ok { panic "i32sender" }
-	if i32 != 234 { panic "i32sender value" }
+	if !ok { panic("i32sender") }
+	if i32 != 234 { panic("i32sender value") }
 
 	go i64receiver(c64);
 	pause();
 	ok = c64 -< 123456;
-	if !ok { panic "i64receiver" }
+	if !ok { panic("i64receiver") }
 	go i64sender(c64);
 	pause();
 	i64, ok = <-c64;
-	if !ok { panic "i64sender" }
-	if i64 != 234567 { panic "i64sender value" }
+	if !ok { panic("i64sender") }
+	if i64 != 234567 { panic("i64sender value") }
 
 	go breceiver(cb);
 	pause();
 	ok = cb -< true;
-	if !ok { panic "breceiver" }
+	if !ok { panic("breceiver") }
 	go bsender(cb);
 	pause();
 	b, ok = <-cb;
-	if !ok { panic "bsender" }
-	if !b{ panic "bsender value" }
+	if !ok { panic("bsender") }
+	if !b{ panic("bsender value") }
 
 	go sreceiver(cs);
 	pause();
 	ok = cs -< "hello";
-	if !ok { panic "sreceiver" }
+	if !ok { panic("sreceiver") }
 	go ssender(cs);
 	pause();
 	s, ok = <-cs;
-	if !ok { panic "ssender" }
-	if s != "hello again" { panic "ssender value" }
-	print "PASS\n"
+	if !ok { panic("ssender") }
+	if s != "hello again" { panic("ssender value") }
+	print("PASS\n")
 }
diff --git a/test/chan/powser1.go b/test/chan/powser1.go
index 5358458dea..3bf70fff7a 100644
--- a/test/chan/powser1.go
+++ b/test/chan/powser1.go
@@ -18,8 +18,8 @@ type rat struct  {
 }
 
 func (u *rat) pr(){
-	if u.den==1 { print u.num }
-	else { print u.num, "/", u.den }
+	if u.den==1 { print(u.num) }
+	else { print(u.num, "/", u.den) }
 	print(" ")
 }
 
@@ -126,7 +126,7 @@ func get(in *dch) item{
 
 func getn(in *[]*dch, n int) *[]item {
 	// BUG n:=len(in);
-	if n != 2 { panic "bad n in getn" };
+	if n != 2 { panic("bad n in getn") };
 	req := new([2] *chan int);
 	dat := new([2] *chan item);
 	out := new([2] item);
@@ -264,7 +264,7 @@ func sub(u, v *rat) *rat{
 }
 
 func inv(u *rat) *rat{	// invert a rat
-	if u.num == 0 { panic "zero divide in inv" }
+	if u.num == 0 { panic("zero divide in inv") }
 	return i2tor(u.den, u.num);
 }
 
@@ -283,7 +283,7 @@ Evaln(c *rat, U PS, n int)
 		val = val + x * float64(u.num)/float64(u.den);
 		xn = xn*x;
 	}
-	print val, "\n";
+	print(val, "\n");
 }
 
 // Print n terms of a power series
@@ -294,7 +294,7 @@ func Printn(U PS, n int){
 		if end(u) != 0 { done = true }
 		else { u.pr() }
 	}
-	print ("\n");
+	print(("\n"));
 }
 
 func Print(U PS){
@@ -614,12 +614,12 @@ func check(U PS, c *rat, count int, str string) {
 	for i := 0; i < count; i++ {
 		r := get(U)
 		if !r.eq(c) {
-			print "got: ";
+			print("got: ");
 			r.pr();
-			print "should get ";
+			print("should get ");
 			c.pr();
-			print "\n";
-			panic str
+			print("\n");
+			panic(str)
 		}
 	}
 }
@@ -634,17 +634,17 @@ func checka(U PS, a *[]*rat, str string) {
 func main() {
 	Init();
 	if sys.argc() > 1 {  // print
-		print "Ones: "; Printn(Ones, 10);
-		print "Twos: "; Printn(Twos, 10);
-		print "Add: "; Printn(Add(Ones, Twos), 10);
-		print "Diff: "; Printn(Diff(Ones), 10);
-		print "Integ: "; Printn(Integ(zero, Ones), 10);
-		print "CMul: "; Printn(Cmul(neg(one), Ones), 10);
-		print "Sub: "; Printn(Sub(Ones, Twos), 10);
-		print "Mul: "; Printn(Mul(Ones, Ones), 10);
-		print "Exp: "; Printn(Exp(Ones), 15);
-		print "MonSubst: "; Printn(MonSubst(Ones, neg(one), 2), 10);
-		print "ATan: "; Printn(Integ(zero, MonSubst(Ones, neg(one), 2)), 10);
+		print("Ones: "); Printn(Ones, 10);
+		print("Twos: "); Printn(Twos, 10);
+		print("Add: "); Printn(Add(Ones, Twos), 10);
+		print("Diff: "); Printn(Diff(Ones), 10);
+		print("Integ: "); Printn(Integ(zero, Ones), 10);
+		print("CMul: "); Printn(Cmul(neg(one), Ones), 10);
+		print("Sub: "); Printn(Sub(Ones, Twos), 10);
+		print("Mul: "); Printn(Mul(Ones, Ones), 10);
+		print("Exp: "); Printn(Exp(Ones), 15);
+		print("MonSubst: "); Printn(MonSubst(Ones, neg(one), 2), 10);
+		print("ATan: "); Printn(Integ(zero, MonSubst(Ones, neg(one), 2)), 10);
 	} else {  // test
 		check(Ones, one, 5, "Ones");
 		check(Add(Ones, Ones), itor(2), 0, "Add Ones Ones");  // 1 1 1 1 1
diff --git a/test/chan/sieve.go b/test/chan/sieve.go
index 6fd28e5130..2d55a2a992 100644
--- a/test/chan/sieve.go
+++ b/test/chan/sieve.go
@@ -43,30 +43,30 @@ func Sieve(primes *chan-< int) {
 func main() {
 	primes := new(chan int);
 	go Sieve(primes);
-	if <-primes != 2 { panic 2 }
-	if <-primes != 3 { panic 3 }
-	if <-primes != 5 { panic 5 }
-	if <-primes != 7 { panic 7 }
-	if <-primes != 11 { panic 11 }
-	if <-primes != 13 { panic 13 }
-	if <-primes != 17 { panic 17 }
-	if <-primes != 19 { panic 19 }
-	if <-primes != 23 { panic 23 }
-	if <-primes != 29 { panic 29 }
-	if <-primes != 31 { panic 31 }
-	if <-primes != 37 { panic 37 }
-	if <-primes != 41 { panic 41 }
-	if <-primes != 43 { panic 43 }
-	if <-primes != 47 { panic 47 }
-	if <-primes != 53 { panic 53 }
-	if <-primes != 59 { panic 59 }
-	if <-primes != 61 { panic 61 }
-	if <-primes != 67 { panic 67 }
-	if <-primes != 71 { panic 71 }
-	if <-primes != 73 { panic 73 }
-	if <-primes != 79 { panic 79 }
-	if <-primes != 83 { panic 83 }
-	if <-primes != 89 { panic 89 }
-	if <-primes != 97 { panic 97 }
+	if <-primes != 2 { panic(2) }
+	if <-primes != 3 { panic(3) }
+	if <-primes != 5 { panic(5) }
+	if <-primes != 7 { panic(7) }
+	if <-primes != 11 { panic(11) }
+	if <-primes != 13 { panic(13) }
+	if <-primes != 17 { panic(17) }
+	if <-primes != 19 { panic(19) }
+	if <-primes != 23 { panic(23) }
+	if <-primes != 29 { panic(29) }
+	if <-primes != 31 { panic(31) }
+	if <-primes != 37 { panic(37) }
+	if <-primes != 41 { panic(41) }
+	if <-primes != 43 { panic(43) }
+	if <-primes != 47 { panic(47) }
+	if <-primes != 53 { panic(53) }
+	if <-primes != 59 { panic(59) }
+	if <-primes != 61 { panic(61) }
+	if <-primes != 67 { panic(67) }
+	if <-primes != 71 { panic(71) }
+	if <-primes != 73 { panic(73) }
+	if <-primes != 79 { panic(79) }
+	if <-primes != 83 { panic(83) }
+	if <-primes != 89 { panic(89) }
+	if <-primes != 97 { panic(97) }
 	sys.exit(0);
 }
diff --git a/test/char_lit.go b/test/char_lit.go
index 55ab67d3dc..de967883b0 100644
--- a/test/char_lit.go
+++ b/test/char_lit.go
@@ -32,11 +32,11 @@ func main() {
     '\Ucafebabe'
   ;
   if '\Ucafebabe' != 0xcafebabe {
-  	print "cafebabe wrong\n";
+  	print("cafebabe wrong\n");
   	sys.exit(1)
   }
   if i != 0xcc238de1 {
-  	print "number is ", i, " should be ", 0xcc238de1, "\n";
+  	print("number is ", i, " should be ", 0xcc238de1, "\n");
   	sys.exit(1)
   }
 }
diff --git a/test/fixedbugs/bug006.go b/test/fixedbugs/bug006.go
index dc40abf0a8..938a216e2b 100644
--- a/test/fixedbugs/bug006.go
+++ b/test/fixedbugs/bug006.go
@@ -12,6 +12,6 @@ const (
 );
 
 func main() {
-	if g == 0.0 { print "zero\n";}
-	if g != 4.5 { print " fail\n"; sys.exit(1); }
+	if g == 0.0 { print("zero\n");}
+	if g != 4.5 { print(" fail\n"); sys.exit(1); }
 }
diff --git a/test/fixedbugs/bug012.go b/test/fixedbugs/bug012.go
index e51819ebb6..41d1bf627b 100644
--- a/test/fixedbugs/bug012.go
+++ b/test/fixedbugs/bug012.go
@@ -12,10 +12,10 @@ func main() {
 	var u31 uint64 = 1;
 	var u32 uint64 = 18446744073709551615;
 	var u33 uint64 = +18446744073709551615;
-	if u32 != (1<<64)-1 { panic "u32\n"; }
-	if u33 != (1<<64)-1 { panic "u33\n"; }
+	if u32 != (1<<64)-1 { panic("u32\n"); }
+	if u33 != (1<<64)-1 { panic("u33\n"); }
 	var i34 int64 = ^0;  // note: 2's complement means ^0 == -1
-	if i34 != -1 { panic "i34" }
+	if i34 != -1 { panic("i34") }
 }
 /*
 bug12.go:5: overflow converting constant to <uint64>UINT64
diff --git a/test/fixedbugs/bug028.go b/test/fixedbugs/bug028.go
index 57f36e31dd..7ec016c454 100644
--- a/test/fixedbugs/bug028.go
+++ b/test/fixedbugs/bug028.go
@@ -20,7 +20,7 @@ func Alloc(i int) int {
 
 func main() {
 	s := Alloc(7);
-	if s != 5 { panic "bad" }
+	if s != 5 { panic("bad") }
 }
 
 /*
diff --git a/test/bugs/bug053.go b/test/fixedbugs/bug053.go
similarity index 100%
rename from test/bugs/bug053.go
rename to test/fixedbugs/bug053.go
diff --git a/test/fixedbugs/bug067.go b/test/fixedbugs/bug067.go
index e66b48c6d0..a7efbcf164 100644
--- a/test/fixedbugs/bug067.go
+++ b/test/fixedbugs/bug067.go
@@ -7,5 +7,5 @@
 package main
 
 func main() {
-	go func() { print "ok\n" } ();
+	go func() { print("ok\n") } ();
 }
diff --git a/test/fixedbugs/bug082.go b/test/fixedbugs/bug082.go
index 26c4f1f648..12a2da0617 100644
--- a/test/fixedbugs/bug082.go
+++ b/test/fixedbugs/bug082.go
@@ -9,7 +9,7 @@ package main
 func main() {
 	x := 0;
 	x = ^x;  // unary ^ not yet implemented
-	if x != ^0 { panic x, " ", ^0 }
+	if x != ^0 { panic(x, " ", ^0) }
 }
 
 /*
diff --git a/test/fixedbugs/bug084.go b/test/fixedbugs/bug084.go
index e25083f573..a5ccdb37c5 100644
--- a/test/fixedbugs/bug084.go
+++ b/test/fixedbugs/bug084.go
@@ -11,7 +11,7 @@ type Service struct {
 }
 
 func (s *Service) Serve(a int64) {
-	if a != 1234 { panic a, " not 1234\n" }
+	if a != 1234 { panic(a, " not 1234\n") }
 }
 
 var arith Service
diff --git a/test/float_lit.go b/test/float_lit.go
index e5e95e68eb..49a7945288 100644
--- a/test/float_lit.go
+++ b/test/float_lit.go
@@ -42,63 +42,63 @@ func
 main()
 {
 
-	if !close(0., 0, 1, 0) { print "0. is ", 0., "\n"; }
-	if !close(+10., 10, 1, 0) { print "+10. is ", +10., "\n"; }
-	if !close(-210., -210, 1, 0) { print "-210. is ", -210., "\n"; }
+	if !close(0., 0, 1, 0) { print("0. is ", 0., "\n"); }
+	if !close(+10., 10, 1, 0) { print("+10. is ", +10., "\n"); }
+	if !close(-210., -210, 1, 0) { print("-210. is ", -210., "\n"); }
 
-	if !close(.0, 0, 1, 0) { print ".0 is ", .0, "\n"; }
-	if !close(+.01, 1, 100, 0) { print "+.01 is ", +.01, "\n"; }
-	if !close(-.012, -12, 1000, 0) { print "-.012 is ", -.012, "\n"; }
+	if !close(.0, 0, 1, 0) { print(".0 is ", .0, "\n"); }
+	if !close(+.01, 1, 100, 0) { print("+.01 is ", +.01, "\n"); }
+	if !close(-.012, -12, 1000, 0) { print("-.012 is ", -.012, "\n"); }
 
-	if !close(0.0, 0, 1, 0) { print "0.0 is ", 0.0, "\n"; }
-	if !close(+10.01, 1001, 100, 0) { print "+10.01 is ", +10.01, "\n"; }
-	if !close(-210.012, -210012, 1000, 0) { print "-210.012 is ", -210.012, "\n"; }
+	if !close(0.0, 0, 1, 0) { print("0.0 is ", 0.0, "\n"); }
+	if !close(+10.01, 1001, 100, 0) { print("+10.01 is ", +10.01, "\n"); }
+	if !close(-210.012, -210012, 1000, 0) { print("-210.012 is ", -210.012, "\n"); }
 
-	if !close(0E+1, 0, 1, 0) { print "0E+1 is ", 0E+1, "\n"; }
-	if !close(+10e2, 10, 1, 2) { print "+10e2 is ", +10e2, "\n"; }
-	if !close(-210e3, -210, 1, 3) { print "-210e3 is ", -210e3, "\n"; }
+	if !close(0E+1, 0, 1, 0) { print("0E+1 is ", 0E+1, "\n"); }
+	if !close(+10e2, 10, 1, 2) { print("+10e2 is ", +10e2, "\n"); }
+	if !close(-210e3, -210, 1, 3) { print("-210e3 is ", -210e3, "\n"); }
 
-	if !close(0E-1, 0, 1, 0) { print "0E-1 is ", 0E-1, "\n"; }
-	if !close(+0e23, 0, 1, 23) { print "+0e23 is ", +0e23, "\n"; }
-	if !close(-0e345, 0, 1, 345) { print "-0e345 is ", -0e345, "\n"; }
+	if !close(0E-1, 0, 1, 0) { print("0E-1 is ", 0E-1, "\n"); }
+	if !close(+0e23, 0, 1, 23) { print("+0e23 is ", +0e23, "\n"); }
+	if !close(-0e345, 0, 1, 345) { print("-0e345 is ", -0e345, "\n"); }
 
-	if !close(0E1, 0, 1, 1) { print "0E1 is ", 0E1, "\n"; }
-	if !close(+10e23, 10, 1, 23) { print "+10e23 is ", +10e23, "\n"; }
-	if !close(-210e34, -210, 1, 34) { print "-210e34 is ", -210e34, "\n"; }
+	if !close(0E1, 0, 1, 1) { print("0E1 is ", 0E1, "\n"); }
+	if !close(+10e23, 10, 1, 23) { print("+10e23 is ", +10e23, "\n"); }
+	if !close(-210e34, -210, 1, 34) { print("-210e34 is ", -210e34, "\n"); }
 
-	if !close(0.E1, 0, 1, 1) { print "0.E1 is ", 0.E1, "\n"; }
-	if !close(+10.e+2, 10, 1, 2) { print "+10.e+2 is ", +10.e+2, "\n"; }
-	if !close(-210.e-3, -210, 1, -3) { print "-210.e-3 is ", -210.e-3, "\n"; }
+	if !close(0.E1, 0, 1, 1) { print("0.E1 is ", 0.E1, "\n"); }
+	if !close(+10.e+2, 10, 1, 2) { print("+10.e+2 is ", +10.e+2, "\n"); }
+	if !close(-210.e-3, -210, 1, -3) { print("-210.e-3 is ", -210.e-3, "\n"); }
 
-	if !close(.0E1, 0, 1, 1) { print ".0E1 is ", .0E1, "\n"; }
-	if !close(+.01e2, 1, 100, 2) { print "+.01e2 is ", +.01e2, "\n"; }
-	if !close(-.012e3, -12, 1000, 3) { print "-.012e3 is ", -.012e3, "\n"; }
+	if !close(.0E1, 0, 1, 1) { print(".0E1 is ", .0E1, "\n"); }
+	if !close(+.01e2, 1, 100, 2) { print("+.01e2 is ", +.01e2, "\n"); }
+	if !close(-.012e3, -12, 1000, 3) { print("-.012e3 is ", -.012e3, "\n"); }
 
-	if !close(0.0E1, 0, 1, 0) { print "0.0E1 is ", 0.0E1, "\n"; }
-	if !close(+10.01e2, 1001, 100, 2) { print "+10.01e2 is ", +10.01e2, "\n"; }
-	if !close(-210.012e3, -210012, 1000, 3) { print "-210.012e3 is ", -210.012e3, "\n"; }
+	if !close(0.0E1, 0, 1, 0) { print("0.0E1 is ", 0.0E1, "\n"); }
+	if !close(+10.01e2, 1001, 100, 2) { print("+10.01e2 is ", +10.01e2, "\n"); }
+	if !close(-210.012e3, -210012, 1000, 3) { print("-210.012e3 is ", -210.012e3, "\n"); }
 
-	if !close(0.E+12, 0, 1, 0) { print "0.E+12 is ", 0.E+12, "\n"; }
-	if !close(+10.e23, 10, 1, 23) { print "+10.e23 is ", +10.e23, "\n"; }
-	if !close(-210.e33, -210, 1, 33) { print "-210.e33 is ", -210.e33, "\n"; }
+	if !close(0.E+12, 0, 1, 0) { print("0.E+12 is ", 0.E+12, "\n"); }
+	if !close(+10.e23, 10, 1, 23) { print("+10.e23 is ", +10.e23, "\n"); }
+	if !close(-210.e33, -210, 1, 33) { print("-210.e33 is ", -210.e33, "\n"); }
 
-	if !close(.0E-12, 0, 1, 0) { print ".0E-12 is ", .0E-12, "\n"; }
-	if !close(+.01e23, 1, 100, 23) { print "+.01e23 is ", +.01e23, "\n"; }
-	if !close(-.012e34, -12, 1000, 34) { print "-.012e34 is ", -.012e34, "\n"; }
+	if !close(.0E-12, 0, 1, 0) { print(".0E-12 is ", .0E-12, "\n"); }
+	if !close(+.01e23, 1, 100, 23) { print("+.01e23 is ", +.01e23, "\n"); }
+	if !close(-.012e34, -12, 1000, 34) { print("-.012e34 is ", -.012e34, "\n"); }
 
-	if !close(0.0E12, 0, 1, 12) { print "0.0E12 is ", 0.0E12, "\n"; }
-	if !close(+10.01e23, 1001, 100, 23) { print "+10.01e23 is ", +10.01e23, "\n"; }
-	if !close(-210.012e33, -210012, 1000, 33) { print "-210.012e33 is ", -210.012e33, "\n"; }
+	if !close(0.0E12, 0, 1, 12) { print("0.0E12 is ", 0.0E12, "\n"); }
+	if !close(+10.01e23, 1001, 100, 23) { print("+10.01e23 is ", +10.01e23, "\n"); }
+	if !close(-210.012e33, -210012, 1000, 33) { print("-210.012e33 is ", -210.012e33, "\n"); }
 
-	if !close(0.E123, 0, 1, 123) { print "0.E123 is ", 0.E123, "\n"; }
-	if !close(+10.e+23, 10, 1, 23) { print "+10.e+234 is ", +10.e+234, "\n"; }
-	if !close(-210.e-35, -210, 1, -35) { print "-210.e-35 is ", -210.e-35, "\n"; }
+	if !close(0.E123, 0, 1, 123) { print("0.E123 is ", 0.E123, "\n"); }
+	if !close(+10.e+23, 10, 1, 23) { print("+10.e+234 is ", +10.e+234, "\n"); }
+	if !close(-210.e-35, -210, 1, -35) { print("-210.e-35 is ", -210.e-35, "\n"); }
 
-	if !close(.0E123, 0, 1, 123) { print ".0E123 is ", .0E123, "\n"; }
-	if !close(+.01e29, 1, 100, 29) { print "+.01e29 is ", +.01e29, "\n"; }
-	if !close(-.012e29, -12, 1000, 29) { print "-.012e29 is ", -.012e29, "\n"; }
+	if !close(.0E123, 0, 1, 123) { print(".0E123 is ", .0E123, "\n"); }
+	if !close(+.01e29, 1, 100, 29) { print("+.01e29 is ", +.01e29, "\n"); }
+	if !close(-.012e29, -12, 1000, 29) { print("-.012e29 is ", -.012e29, "\n"); }
 
-	if !close(0.0E123, 0, 1, 123) { print "0.0E123 is ", 0.0E123, "\n"; }
-	if !close(+10.01e31, 1001, 100, 31) { print "+10.01e31 is ", +10.01e31, "\n"; }
-	if !close(-210.012e19, -210012, 1000, 19) { print "-210.012e19 is ", -210.012e19, "\n"; }
+	if !close(0.0E123, 0, 1, 123) { print("0.0E123 is ", 0.0E123, "\n"); }
+	if !close(+10.01e31, 1001, 100, 31) { print("+10.01e31 is ", +10.01e31, "\n"); }
+	if !close(-210.012e19, -210012, 1000, 19) { print("-210.012e19 is ", -210.012e19, "\n"); }
 }
diff --git a/test/fmt.go b/test/fmt.go
index 4030138608..bbec4e71a0 100644
--- a/test/fmt.go
+++ b/test/fmt.go
@@ -11,15 +11,15 @@ import fmt "fmt"  // BUG: shouldn't need the first 'fmt'.
 func E(f *fmt.Fmt, e string) {
 	g := f.str();
 	if sys.argc() > 1 {
-		print g, "\n";
+		print(g, "\n");
 		if g != e {
-			print "expected <", e, ">\n";
+			print("expected <", e, ">\n");
 		}
 		return;
 	}
 	if g != e {
-		print "expected <", e, ">\n";
-		print "got      <", g, ">\n"
+		print("expected <", e, ">\n");
+		print("got      <", g, ">\n");
 	}
 }
 
diff --git a/test/for.go b/test/for.go
index dbdb433239..05260ff888 100644
--- a/test/for.go
+++ b/test/for.go
@@ -8,8 +8,8 @@ package main
 
 func assertequal(is, shouldbe int, msg string) {
 	if is != shouldbe {
-		print "assertion fail", msg, "\n";
-		panic 1;
+		print("assertion fail", msg, "\n");
+		panic(1);
 	}
 }
 
diff --git a/test/func.go b/test/func.go
index 56d392b0cf..ee9414ddc4 100644
--- a/test/func.go
+++ b/test/func.go
@@ -9,8 +9,8 @@ package main
 
 func assertequal(is, shouldbe int, msg string) {
 	if is != shouldbe {
-		print "assertion fail", msg, "\n";
-		panic 1;
+		print("assertion fail", msg, "\n");
+		panic(1);
 	}
 }
 
diff --git a/test/golden.out b/test/golden.out
index c3f018fa81..d3f691102d 100644
--- a/test/golden.out
+++ b/test/golden.out
@@ -87,10 +87,6 @@ bugs/bug048.go:7: illegal types for operand: CONV
 	(MAP[<int32>INT32]<int32>INT32)
 BUG: known to fail incorrectly
 
-=========== bugs/bug053.go
-bugs/bug053.go:6: syntax error
-BUG: len should not be a keyword
-
 =========== bugs/bug054.go
 bugs/bug054.go:25: fatal error: agen_inter i2s
 BUG: known to fail incorrectly
diff --git a/test/helloworld.go b/test/helloworld.go
index 83d6b85513..7234be35cb 100644
--- a/test/helloworld.go
+++ b/test/helloworld.go
@@ -7,5 +7,5 @@
 package main
 
 func main() {
-	print "hello, world\n";
+	print("hello, world\n");
 }
diff --git a/test/if.go b/test/if.go
index beb7d6b0fb..a2c840eb1a 100644
--- a/test/if.go
+++ b/test/if.go
@@ -8,8 +8,8 @@ package main
 
 func assertequal(is, shouldbe int, msg string) {
 	if is != shouldbe {
-		print "assertion fail", msg, "\n";
-		panic 1;
+		print("assertion fail", msg, "\n");
+		panic(1);
 	}
 }
 
diff --git a/test/if1.go b/test/if1.go
index b2ebd6f02c..81b0414753 100644
--- a/test/if1.go
+++ b/test/if1.go
@@ -12,7 +12,7 @@ func main() {
 		count = count + one	
 	}
 	if count != 8 {
-		print count, " should be 8\n";
+		print(count, " should be 8\n");
 		sys.exit(1)
 	}
 }
diff --git a/test/int_lit.go b/test/int_lit.go
index 80c7f3a5e8..f7311dd25d 100644
--- a/test/int_lit.go
+++ b/test/int_lit.go
@@ -17,7 +17,7 @@ func main() {
     0X0 +
     0X123;
   if s != 788 {
-    print "s is ", s, "; should be 788\n";
+    print("s is ", s, "; should be 788\n");
     sys.exit(1);
   }
 }
diff --git a/test/iota.go b/test/iota.go
index 12682d6899..7173d9a0e8 100644
--- a/test/iota.go
+++ b/test/iota.go
@@ -8,8 +8,8 @@ package main
 
 func assert(cond bool, msg string) {
 	if !cond {
-		print "assertion fail: ", msg, "\n";
-		panic 1;
+		print("assertion fail: ", msg, "\n");
+		panic(1);
 	}
 }
 
diff --git a/test/ken/for.go b/test/ken/for.go
index 52ccbff088..74434b2678 100644
--- a/test/ken/for.go
+++ b/test/ken/for.go
@@ -15,5 +15,5 @@ main()
 	for i=0; i<100; i=i+1 {
 		t = t+i;
 	}
-	if t != 50*99  { panic t; }
+	if t != 50*99  { panic(t); }
 }
diff --git a/test/ken/interfun.go b/test/ken/interfun.go
index 8142b9bd28..97db893168 100644
--- a/test/ken/interfun.go
+++ b/test/ken/interfun.go
@@ -45,20 +45,20 @@ main()
 	s.b = 6;
 
 	// call structure
-	if s.f() != 5 { panic 11; }
-	if s.g() != 6 { panic 12; }
+	if s.f() != 5 { panic(11); }
+	if s.g() != 6 { panic(12); }
 
 	i1 = s;		// convert S to I1
 	i2 = i1;	// convert I1 to I2
 
 	// call interface
-	if i1.f() != 5 { panic 21; }
-	if i2.f() != 5 { panic 22; }
-	if i2.g() != 6 { panic 23; }
+	if i1.f() != 5 { panic(21); }
+	if i2.f() != 5 { panic(22); }
+	if i2.g() != 6 { panic(23); }
 
 	g = i1;		// convert I1 to S
-	if g != s { panic 31; }
+	if g != s { panic(31); }
 
 	g = i2;		// convert I2 to S
-	if g != s { panic 32; }
+	if g != s { panic(32); }
 }
diff --git a/test/ken/intervar.go b/test/ken/intervar.go
index 1c0aefde66..baf03c5aab 100644
--- a/test/ken/intervar.go
+++ b/test/ken/intervar.go
@@ -22,7 +22,7 @@ type	Print	struct
 func (p *Print)
 dop()
 {
-	print " print ", p.whoami;
+	print(" print ", p.whoami);
 	p.put.puts("abc");
 }
 
@@ -37,7 +37,7 @@ type	Bio	struct
 func (b *Bio)
 puts(s string)
 {
-	print " bio ", b.whoami;
+	print(" bio ", b.whoami);
 	b.put.puts(s);
 }
 
@@ -52,7 +52,7 @@ type	File	struct
 func (f *File)
 puts(s string)
 {
-	print " file ", f.whoami, " -- ", s;
+	print(" file ", f.whoami, " -- ", s);
 }
 
 func
@@ -71,5 +71,5 @@ main()
 	f.whoami = 3;
 
 	p.dop();
-	print "\n";
+	print("\n");
 }
diff --git a/test/ken/label.go b/test/ken/label.go
index 17c69cdad9..17294ef865 100644
--- a/test/ken/label.go
+++ b/test/ken/label.go
@@ -28,8 +28,8 @@ loop:
 	if i < 100 {
 		goto loop;
 	}
-	print i;
-	print "\n";
+	print(i);
+	print("\n");
 	return;
 
 gogoloop:
diff --git a/test/ken/litfun.go b/test/ken/litfun.go
index 83c1916cde..85b4b0a6a3 100644
--- a/test/ken/litfun.go
+++ b/test/ken/litfun.go
@@ -19,5 +19,5 @@ main()
 		};
 		return x(a)+11;
 	};
-	if x(3) != 3+5+7+11 { panic x(3); }
+	if x(3) != 3+5+7+11 { panic(x(3)); }
 }
diff --git a/test/ken/mfunc.go b/test/ken/mfunc.go
index 032f75679e..ab579e9324 100644
--- a/test/ken/mfunc.go
+++ b/test/ken/mfunc.go
@@ -14,7 +14,7 @@ main()
 	var x,y int;
 
 	x,y = simple(10,20,30);
-	if x+y != 65 { panic x+y; }
+	if x+y != 65 { panic(x+y); }
 }
 
 func
diff --git a/test/ken/ptrfun.go b/test/ken/ptrfun.go
index 70f45dfc7c..bfec64ff9f 100644
--- a/test/ken/ptrfun.go
+++ b/test/ken/ptrfun.go
@@ -32,13 +32,13 @@ main()
 	c.x = &g;
 
 	v = g(c);
-	if v != 6 { panic v; }
+	if v != 6 { panic(v); }
 
 	v = c.x(c);
-	if v != 6 { panic v; }
+	if v != 6 { panic(v); }
 
 	v = c.f();
-	if v != 6 { panic v; }
+	if v != 6 { panic(v); }
 }
 
 func
@@ -47,6 +47,6 @@ g(p *C)int
 	var v int;
 
 	v = p.a;
-	if v != 6 { panic v; }
+	if v != 6 { panic(v); }
 	return p.a;
 }
diff --git a/test/ken/ptrvar.go b/test/ken/ptrvar.go
index c2e2d611d1..0e3452f0aa 100644
--- a/test/ken/ptrvar.go
+++ b/test/ken/ptrvar.go
@@ -34,8 +34,8 @@ main()
 	s2.d.c = 23;
 	s2.d.d = 20;
 
-	if(s2.d.c != 23) { panic 1; }
-	if(g2.d.c != 23) { panic 2; }
+	if(s2.d.c != 23) { panic(1); }
+	if(g2.d.c != 23) { panic(2); }
 
 	x =	s1.a +
 		s1.b +
@@ -50,5 +50,5 @@ main()
 		s2.d.c +
 		s2.d.d;
 
-	if(x != 121) { panic x; }
+	if(x != 121) { panic(x); }
 }
diff --git a/test/ken/rob1.go b/test/ken/rob1.go
index ae56962a31..a75878b1f5 100644
--- a/test/ken/rob1.go
+++ b/test/ken/rob1.go
@@ -63,7 +63,7 @@ Init(i int) *Integer
 func (this *Integer)
 Print()
 {
-	print this.val;
+	print(this.val);
 }
 
 func
@@ -78,5 +78,5 @@ main()
 	}
 
 	list.Print();
-	print "\n";
+	print("\n");
 }
diff --git a/test/ken/rob2.go b/test/ken/rob2.go
index 1b708400ac..b18435dfca 100644
--- a/test/ken/rob2.go
+++ b/test/ken/rob2.go
@@ -100,21 +100,21 @@ func (slist *Slist) PrintOne(doparen bool)
 	}
 	if slist.isatom {
 		if slist.isstring {
-			print slist.String();
+			print(slist.String());
 		} else {
-			print slist.Integer();
+			print(slist.Integer());
 		}
 	} else {
 		if doparen {
-			print "(" ;
+			print("(" );
 		}
 		slist.Car().PrintOne(true);
 		if slist.Cdr() != nil {
-			print " ";
+			print(" ");
 			slist.Cdr().PrintOne(false);
 		}
 		if doparen {
-			print ")";
+			print(")");
 		}
 	}
 }
@@ -122,7 +122,7 @@ func (slist *Slist) PrintOne(doparen bool)
 func (slist *Slist) Print()
 {
 	slist.PrintOne(true);
-	print "\n";
+	print("\n");
 }
 
 func Get() int
@@ -182,7 +182,7 @@ func NextToken()
 				}
 			}
 			if i >= 100 - 1 {	// sizeof tokenbuf - 1
-				panic "atom too long\n";
+				panic("atom too long\n");
 			}
 			tokenlen = i;
 			tokenbuf[i] = nilchar;
@@ -197,8 +197,8 @@ func NextToken()
 func Expect(c int)
 {
 	if token != c {
-		print "parse error: expected ", c, "\n";
-		panic "parse";
+		print("parse error: expected ", c, "\n");
+		panic("parse");
 	}
 	NextToken();
 }
@@ -276,7 +276,7 @@ func Parse() *Slist
 				slist = atom(0);
 			default:
 				slist = nil;
-				print "unknown token"; //, token, tokenbuf;
+				print("unknown token"); // token, tokenbuf);
 		}
 		NextToken();
 		return slist;
diff --git a/test/ken/robfor.go b/test/ken/robfor.go
index 60e3f1fddf..05188a4723 100644
--- a/test/ken/robfor.go
+++ b/test/ken/robfor.go
@@ -8,8 +8,8 @@ package main
 
 func assertequal(is, shouldbe int, msg string) {
 	if is != shouldbe {
-		print "assertion fail" + msg + "\n";
-		panic 1;
+		print("assertion fail" + msg + "\n");
+		panic(1);
 	}
 }
 
diff --git a/test/ken/robfunc.go b/test/ken/robfunc.go
index 703e65e2df..12b4b6d7b6 100644
--- a/test/ken/robfunc.go
+++ b/test/ken/robfunc.go
@@ -8,8 +8,8 @@ package main
 
 func assertequal(is, shouldbe int, msg string) {
 	if is != shouldbe {
-		print "assertion fail" + msg + "\n";
-		panic 1;
+		print("assertion fail" + msg + "\n");
+		panic(1);
 	}
 }
 
diff --git a/test/ken/robif.go b/test/ken/robif.go
index 7a099769d4..41d164cd5f 100644
--- a/test/ken/robif.go
+++ b/test/ken/robif.go
@@ -8,8 +8,8 @@ package main
 
 func assertequal(is, shouldbe int, msg string) {
 	if is != shouldbe {
-		print "assertion fail" + msg + "\n";
-		panic 1;
+		print("assertion fail" + msg + "\n");
+		panic(1);
 	}
 }
 
diff --git a/test/ken/robiota.go b/test/ken/robiota.go
index 685d1290e2..af97fa2a32 100644
--- a/test/ken/robiota.go
+++ b/test/ken/robiota.go
@@ -8,8 +8,8 @@ package main
 
 func assert(cond bool, msg string) {
 	if !cond {
-		print "assertion fail: " + msg + "\n";
-		panic 1;
+		print("assertion fail: " + msg + "\n");
+		panic(1);
 	}
 }
 
diff --git a/test/ken/simparray.go b/test/ken/simparray.go
index 1cbde1bd47..a670986bda 100644
--- a/test/ken/simparray.go
+++ b/test/ken/simparray.go
@@ -22,7 +22,7 @@ main()
 		s1 = s1 + a[i];
 	}
 
-	if s1 != 35 { panic s1; }
+	if s1 != 35 { panic(s1); }
 
 	for i:=short(5); i<10; i=i+1 {
 		b[i] = float(i);
@@ -33,7 +33,7 @@ main()
 		s2 = s2 + b[i];
 	}
 
-	if s2 != 35 { panic s2; }
+	if s2 != 35 { panic(s2); }
 
 	b := new([100]int);
 	for i:=0; i<100; i=i+1 {
@@ -45,5 +45,5 @@ main()
 		s3 = s3+b[i];
 	}
 
-	if s3 != 4950 { panic s3; }
+	if s3 != 4950 { panic(s3); }
 }
diff --git a/test/ken/simpbool.go b/test/ken/simpbool.go
index 6a223e8523..aad111dd55 100644
--- a/test/ken/simpbool.go
+++ b/test/ken/simpbool.go
@@ -20,88 +20,88 @@ main()
 	a = true;
 	b = false;
 
-	if !a { panic 1; }
-	if b { panic 2; }
-	if !!!a { panic 3; }
-	if !!b { panic 4; }
+	if !a { panic(1); }
+	if b { panic(2); }
+	if !!!a { panic(3); }
+	if !!b { panic(4); }
 
 	a = !b;
-	if !a { panic 5; }
-	if !!!a { panic 6; }
+	if !a { panic(5); }
+	if !!!a { panic(6); }
 
 	var x *s;
 	x = new(s);
 	x.a = true;
 	x.b = false;
 
-	if !x.a { panic 7; }
-	if x.b { panic 8; }
-	if !!!x.a { panic 9; }
-	if !!x.b { panic 10; }
+	if !x.a { panic(7); }
+	if x.b { panic(8); }
+	if !!!x.a { panic(9); }
+	if !!x.b { panic(10); }
 
 	x.a = !x.b;
-	if !x.a { panic 11; }
-	if !!!x.a { panic 12; }
+	if !x.a { panic(11); }
+	if !!!x.a { panic(12); }
 
 	/*
 	 * test &&
 	 */
 	a = true;
 	b = true;
-	if !(a && b) { panic 21; }
-	if a && !b { panic 22; }
-	if !a && b { panic 23; }
-	if !a && !b { panic 24; }
+	if !(a && b) { panic(21); }
+	if a && !b { panic(22); }
+	if !a && b { panic(23); }
+	if !a && !b { panic(24); }
 
 	a = false;
 	b = true;
-	if !(!a && b) { panic 31; }
-	if !a && !b { panic 32; }
-	if a && b { panic 33; }
-	if a && !b { panic 34; }
+	if !(!a && b) { panic(31); }
+	if !a && !b { panic(32); }
+	if a && b { panic(33); }
+	if a && !b { panic(34); }
 
 	a = true;
 	b = false;
-	if !(a && !b) { panic 41; }
-	if a && b { panic 41; }
-	if !a && !b { panic 41; }
-	if !a && b { panic 44; }
+	if !(a && !b) { panic(41); }
+	if a && b { panic(41); }
+	if !a && !b { panic(41); }
+	if !a && b { panic(44); }
 
 	a = false;
 	b = false;
-	if !(!a && !b) { panic 51; }
-	if !a && b { panic 52; }
-	if a && !b { panic 53; }
-	if a && b { panic 54; }
+	if !(!a && !b) { panic(51); }
+	if !a && b { panic(52); }
+	if a && !b { panic(53); }
+	if a && b { panic(54); }
 
 	/*
 	 * test ||
 	 */
 	a = true;
 	b = true;
-	if !(a || b) { panic 61; }
-	if !(a || !b) { panic 62; }
-	if !(!a || b) { panic 63; }
-	if !a || !b { panic 64; }
+	if !(a || b) { panic(61); }
+	if !(a || !b) { panic(62); }
+	if !(!a || b) { panic(63); }
+	if !a || !b { panic(64); }
 
 	a = false;
 	b = true;
-	if !(!a || b) { panic 71; }
-	if !(!a || !b) { panic 72; }
-	if !(a || b) { panic 73; }
-	if a || !b { panic 74; }
+	if !(!a || b) { panic(71); }
+	if !(!a || !b) { panic(72); }
+	if !(a || b) { panic(73); }
+	if a || !b { panic(74); }
 
 	a = true;
 	b = false;
-	if !(a || !b) { panic 81; }
-	if !(a || b) { panic 82; }
-	if !(!a || !b) { panic 83; }
-	if !a || b { panic 84; }
+	if !(a || !b) { panic(81); }
+	if !(a || b) { panic(82); }
+	if !(!a || !b) { panic(83); }
+	if !a || b { panic(84); }
 
 	a = false;
 	b = false;
-	if !(!a || !b) { panic 91; }
-	if !(!a || b) { panic 92; }
-	if !(a || !b) { panic 93; }
-	if a || b { panic 94; }
+	if !(!a || !b) { panic(91); }
+	if !(!a || b) { panic(92); }
+	if !(a || !b) { panic(93); }
+	if a || b { panic(94); }
 }
diff --git a/test/ken/simpconv.go b/test/ken/simpconv.go
index 401ae763d4..7bb3896b25 100644
--- a/test/ken/simpconv.go
+++ b/test/ken/simpconv.go
@@ -15,11 +15,11 @@ main()
 	for i:=short(0); i<10; i=i+1 {
 		s1 = s1 + vlong(i);
 	}
-	if s1 != 45 { panic s1; }
+	if s1 != 45 { panic(s1); }
 
 	s2 := float(0);
 	for i:=0; i<10; i=i+1 {
 		s2 = s2 + float(i);
 	}
-	if s2 != 45 { panic s2; }
+	if s2 != 45 { panic(s2); }
 }
diff --git a/test/ken/simpfun.go b/test/ken/simpfun.go
index 3605fa2862..1e063bf0f6 100644
--- a/test/ken/simpfun.go
+++ b/test/ken/simpfun.go
@@ -15,7 +15,7 @@ main()
 	var x int;
 
 	x = fun(10,20,30);
-	if x != 60 { panic x; }
+	if x != 60 { panic(x); }
 }
 
 func
@@ -24,6 +24,6 @@ fun(ia,ib,ic int)int
 	var o int;
 
 	o = ia+ib+ic;
-	if o != 60 { panic o; }
+	if o != 60 { panic(o); }
 	return o;
 }
diff --git a/test/ken/simpprint.go b/test/ken/simpprint.go
index 37ca084253..98393a4570 100644
--- a/test/ken/simpprint.go
+++ b/test/ken/simpprint.go
@@ -10,5 +10,5 @@ package main
 func
 main()
 {
-	print "hello world\n";
+	print("hello world\n");
 }
diff --git a/test/ken/simpswitch.go b/test/ken/simpswitch.go
index 88c2a99813..e5f39e3543 100644
--- a/test/ken/simpswitch.go
+++ b/test/ken/simpswitch.go
@@ -13,13 +13,13 @@ main()
 	for i:=0; i<10; i=i+1 {
 		switch(i) {
 		case 5:
-			print "five";
+			print("five");
 		case a,7:
-			print "a";
+			print("a");
 		default:
-			print i;
+			print(i);
 		}
-		print "out", i;
+		print("out", i);
 	}
-	print "\n";
+	print("\n");
 }
diff --git a/test/ken/simpvar.go b/test/ken/simpvar.go
index 2dd4e73acd..396ea7b4c9 100644
--- a/test/ken/simpvar.go
+++ b/test/ken/simpvar.go
@@ -21,5 +21,5 @@ main()
 		y = 25;
 	}
 	x = x+y;
-	if(x != 40) { panic x; }
+	if(x != 40) { panic(x); }
 }
diff --git a/test/ken/string.go b/test/ken/string.go
index 51da6a2301..3a15beeffa 100644
--- a/test/ken/string.go
+++ b/test/ken/string.go
@@ -16,69 +16,69 @@ main()
 	b := `xyz`;
 
 	/* print a literal */
-	print `abc`;
+	print(`abc`);
 
 	/* print a variable */
-	print b, "-";
+	print(b, "-");
 
 	/* catenate literals */
-	print `abc` + `xyz`, "-";
+	print(`abc` + `xyz`, "-");
 
 	/* catenate variables */
-	print a+b, "-";
+	print(a+b, "-");
 
 	/* compare literals */
 	if `abc` == `xyz` || `abc` != "abc" || `abc` > `xyz` {
-		panic "compare literals";
+		panic("compare literals");
 	}
 
 	/* compare variables */
 	if a == b || a != a || a > b {
-		panic "compare variables";
+		panic("compare variables");
 	}
 
 	/* cat */
 	c = a+b;
-	print c, "-";
+	print(c, "-");
 
 	/* catequal */
 	c = a;
 	c += b;
-	print c, "-";
+	print(c, "-");
 
 	/* clumsy evaluation */
 	c = b;
 	c = a + c;
-	print c, "-";
+	print(c, "-");
 
 	/* len */
 	if len(c) != 6 {
-		panic "len ", len(c);
+		panic("len ", len(c));
 	}
 
 	/* index strings */
 	for i:=0; i<len(c); i=i+1 {
 		if c[i] != (a+b)[i] {
-			panic "index ", i, " ", c[i], " ", (a+b)[i];
+			panic("index ", i, " ", c[i], " ", (a+b)[i]);
 		}
 	}
 
 	/* slice strings */
-	print c[0:3], c[3:6];
+	print(c[0:3], c[3:6]);
 
-	print "\n";
+	print("\n");
 
 	/* create string with integer constant */
 	c = string('x');
 	if c != "x" {
-		panic "create int ", c;
+		panic("create int ", c);
 	}
 
 	/* create string with integer variable */
 	v := 'x';
 	c = string(v);
 	if c != "x" {
-		panic "create int ", c;
+		panic("create int ", c);
 	}
 
 	/* create string with byte array */
@@ -88,7 +88,7 @@ main()
 	z1[2] = 'c';
 	c = string(z1);
 	if c != "abc" {
-		panic "create array ", c;
+		panic("create array ", c);
 	}
 
 	/* create string with byte array pointer */
@@ -98,6 +98,6 @@ main()
 	z2[2] = 'c';
 	c = string(z2);
 	if c != "abc" {
-		panic "create array pointer ", c;
+		panic("create array pointer ", c);
 	}
 }
diff --git a/test/ken/strvar.go b/test/ken/strvar.go
index cf5b35d8d3..4a29217952 100644
--- a/test/ken/strvar.go
+++ b/test/ken/strvar.go
@@ -27,8 +27,8 @@ main()
 	s1.c = 3;
 	s1.d = 5;
 
-	if(s1.c != 3) { panic s1.c; }
-	if(g1.c != 3) { panic g1.c; }
+	if(s1.c != 3) { panic(s1.c); }
+	if(g1.c != 3) { panic(g1.c); }
 
 	s2.a = 7;
 	s2.b = 11;
@@ -38,8 +38,8 @@ main()
 	s2.d.c = 23;
 	s2.d.d = 29;
 
-	if(s2.d.c != 23) { panic s2.d.c; }
-	if(g2.d.c != 23) { panic g2.d.c; }
+	if(s2.d.c != 23) { panic(s2.d.c); }
+	if(g2.d.c != 23) { panic(g2.d.c); }
 
 	x =	s1.a +
 		s1.b +
@@ -54,7 +54,7 @@ main()
 		s2.d.c +
 		s2.d.d;
 
-	if(x != 130) { panic x; }
+	if(x != 130) { panic(x); }
 
 	// test an automatic struct
 	s3.a = 7;
@@ -65,7 +65,7 @@ main()
 	s3.d.c = 23;
 	s3.d.d = 29;
 
-	if(s3.d.c != 23) { panic s3.d.c; }
+	if(s3.d.c != 23) { panic(s3.d.c); }
 
 	x =	s3.a +
 		s3.b +
@@ -75,5 +75,5 @@ main()
 		s3.d.c +
 		s3.d.d;
 
-	if(x != 119) { panic x; }
+	if(x != 119) { panic(x); }
 }
diff --git a/test/literal.go b/test/literal.go
index 6681243bd9..673a53c7df 100644
--- a/test/literal.go
+++ b/test/literal.go
@@ -8,8 +8,8 @@ package main
 
 func assert(cond bool, msg string) {
 	if !cond {
-		print "assertion fail: ", msg, "\n";
-		panic 1;
+		print("assertion fail: ", msg, "\n");
+		panic(1);
 	}
 }
 
diff --git a/test/peano.go b/test/peano.go
index bc52c0612c..4c1b837b2f 100644
--- a/test/peano.go
+++ b/test/peano.go
@@ -87,7 +87,7 @@ func count(x *Number) int {
 func check(x *Number, expected int) {
 	var c = count(x);
 	if c != expected {
-		panic "error: found ", c, "; expected ", expected, "\n";
+		panic("error: found ", c, "; expected ", expected, "\n");
 	}
 }
 
@@ -125,7 +125,7 @@ func main() {
 	
 	verify();
 	for i := 0; i <= 10; i++ {
-		print i, "! = ", count(fact(gen(i))), "\n";
+		print(i, "! = ", count(fact(gen(i))), "\n");
 	}
 }
 
diff --git a/test/readfile.go b/test/readfile.go
index 65a8cb87b0..c9cf11a2dd 100644
--- a/test/readfile.go
+++ b/test/readfile.go
@@ -13,7 +13,7 @@ func main() {
 
 	s, ok = sys.readfile("readfile.go");
 	if !ok {
-		print "couldn't readfile\n";
+		print("couldn't readfile\n");
 		sys.exit(1)
 	}
 	start_of_file :=
@@ -22,7 +22,7 @@ func main() {
 		"\n" +
 		"package main\n";
 	if s[0:102] != start_of_file {
-		print "wrong data\n";
+		print("wrong data\n");
 		sys.exit(1)
 	}
 }
diff --git a/test/sieve.go b/test/sieve.go
index c55477caf3..98af979f16 100644
--- a/test/sieve.go
+++ b/test/sieve.go
@@ -30,7 +30,7 @@ func Sieve() {
 	go Generate(ch);  // Start Generate() as a subprocess.
 	for {
 		prime := <-ch;
-		print prime, "\n";
+		print(prime, "\n");
 		ch1 := new(chan int);
 		go Filter(ch, ch1, prime);
 		ch = ch1
diff --git a/test/simassign.go b/test/simassign.go
index 5b8c3f39fa..1e7d307aaf 100644
--- a/test/simassign.go
+++ b/test/simassign.go
@@ -11,16 +11,16 @@ var	a,b,c,d,e,f,g,h,i int;
 func
 printit()
 {
-	print a,b,c,d,e,f,g,h,i,"\n";
+	print(a,b,c,d,e,f,g,h,i,"\n");
 }
 
 func
 testit() bool
 {
 	if a+b+c+d+e+f+g+h+i != 45 {
-		print "sum does not add to 45\n";
+		print("sum does not add to 45\n");
 		printit();
-		panic;
+		panic();
 	}
 	return	a == 1 &&
 		b == 2 &&
@@ -51,7 +51,7 @@ main()
 	h = 8;
 	i = 9;
 
-	if !testit() { panic "init val\n"; }
+	if !testit() { panic("init val\n"); }
 
 	for z:=0; z<100; z++ {
 		a,b,c,d, e,f,g,h,i = b,c,d,a, i,e,f,g,h;
@@ -60,24 +60,24 @@ main()
 			if z == 19 {
 				break;
 			}
-			print "on ", z, "th iteration\n";
+			print("on ", z, "th iteration\n");
 			printit();
-			panic;
+			panic();
 		}
 	}
 
 	if !testit() {
-		print "final val\n";
+		print("final val\n");
 		printit();
-		panic;
+		panic();
 	}
 
 	a, b = swap(1, 2);
 	if a != 2 || b != 1 {
-		panic "bad swap";
+		panic("bad swap");
 	}
 //BUG	a, b = swap(swap(a, b));
 //	if a != 2 || b != 1 {
-//		panic "bad swap";
+//		panic("bad swap");
 //	}
 }
diff --git a/test/string_lit.go b/test/string_lit.go
index 9ef8f931d3..2196214845 100644
--- a/test/string_lit.go
+++ b/test/string_lit.go
@@ -11,7 +11,7 @@ var ecode int;
 func assert(a, b, c string) {
 	if a != b {
 		ecode = 1;
-		print "FAIL: ", c, ": ", a, "!=", b, "\n";
+		print("FAIL: ", c, ": ", a, "!=", b, "\n");
 		var max int = len(a);
 		if len(b) > max {
 			max = len(b);
@@ -26,7 +26,7 @@ func assert(a, b, c string) {
 				bc = int(b[i]);
 			}
 			if ac != bc {
-				print "\ta[", i, "] = ", ac, "; b[", i, "] =", bc, "\n";
+				print("\ta[", i, "] = ", ac, "; b[", i, "] =", bc, "\n");
 			}
 		}
 	}
diff --git a/test/switch.go b/test/switch.go
index af1dc8fb9d..f68542053f 100644
--- a/test/switch.go
+++ b/test/switch.go
@@ -8,8 +8,8 @@ package main
 
 func assert(cond bool, msg string) {
 	if !cond {
-		print "assertion fail: ", msg, "\n";
-		panic 1;
+		print("assertion fail: ", msg, "\n");
+		panic(1);
 	}
 }
 
diff --git a/test/turing.go b/test/turing.go
index c622bfb741..462bb91684 100644
--- a/test/turing.go
+++ b/test/turing.go
@@ -24,7 +24,7 @@ func main() {
 			case '-':
 					a[p]--;
 			case '.':
-					print string(a[p]);
+					print(string(a[p]));
 			case '[':
 				if a[p] == 0 {
 					for nest := 1; nest > 0; pc++ {
diff --git a/test/utf.go b/test/utf.go
index cf0c746ab9..206f67c731 100644
--- a/test/utf.go
+++ b/test/utf.go
@@ -22,13 +22,13 @@ func main() {
 	for w, i, j := 0,0,0; i < l; i += w {
 		var r int32;
 		r, w = sys.stringtorune(s, i, l);
-		if w == 0 { panic "zero width in string" }
-		if r != chars[j] { panic "wrong value from string" }
+		if w == 0 { panic("zero width in string") }
+		if r != chars[j] { panic("wrong value from string") }
 		j++;
 	}
 	// encoded as bytes:  'a' 'b' 'c' e6 97 a5 e6 9c ac e8 aa 9e
 	const L = 12;
-	if L != l { panic "wrong length constructing array" }
+	if L != l { panic("wrong length constructing array") }
 	a := new([L]byte);
 	a[0] = 'a';
 	a[1] = 'b';
@@ -45,8 +45,8 @@ func main() {
 	for w, i, j := 0,0,0; i < L; i += w {
 		var r int32;
 		r, w = sys.bytestorune(&a[0], i, L);
-		if w == 0 { panic "zero width in bytes" }
-		if r != chars[j] { panic "wrong value from bytes" }
+		if w == 0 { panic("zero width in bytes") }
+		if r != chars[j] { panic("wrong value from bytes") }
 		j++;
 	}
 }