last round: non-package code

R=r
DELTA=127  (38 added, 3 deleted, 86 changed)
OCL=34640
CL=34650

29 files changed, 116 insertions, 81 deletions

diff --git a/doc/progs/sortmain.go b/doc/progs/sortmain.go
index 3dca963440..63d68ff05c 100644
--- a/doc/progs/sortmain.go
+++ b/doc/progs/sortmain.go
@@ -55,7 +55,7 @@ func days() {
 	if !sort.IsSorted(&a) {
 		panic()
 	}
-	for i, d := range data {
+	for _, d := range data {
 		fmt.Printf("%s ", d.long_name)
 	}
 	fmt.Printf("\n")
diff --git a/test/assign.go b/test/assign.go
index 9fe9ea0791..acddefef6d 100644
--- a/test/assign.go
+++ b/test/assign.go
@@ -17,17 +17,21 @@ func main() {
 	{
 		var x, y sync.Mutex;
 		x = y;	// ERROR "assignment\[ -~\]*Mutex"
+		_ = x;
 	}
 	{
 		var x, y T;
 		x = y;	// ERROR "assignment\[ -~\]*Mutex"
+		_ = x;
 	}
 	{
 		var x, y [2]sync.Mutex;
 		x = y;	// ERROR "assignment\[ -~\]*Mutex"
+		_ = x;
 	}
 	{
 		var x, y [2]T;
 		x = y;	// ERROR "assignment\[ -~\]*Mutex"
+		_ = x;
 	}
 }
diff --git a/test/bench/chameneosredux.go b/test/bench/chameneosredux.go
index a8cd85454f..e89e69b7dc 100644
--- a/test/bench/chameneosredux.go
+++ b/test/bench/chameneosredux.go
@@ -175,7 +175,7 @@ func play(ref *Referee, color []Color) {
 	fmt.Printf("\n");
 	<-ref.done;
 	total := 0;
-	for i, c := range cham {
+	for _, c := range cham {
 		total += c.count;
 		fmt.Printf("%d %s\n", c.count, say(c.same));
 	}
diff --git a/test/bench/regex-dna.go b/test/bench/regex-dna.go
index 637cb14542..f42efc6d4d 100644
--- a/test/bench/regex-dna.go
+++ b/test/bench/regex-dna.go
@@ -106,10 +106,10 @@ func main() {
 	// Delete the comment lines and newlines
 	bytes = compile("(>[^\n]+)?\n").ReplaceAll(bytes, []byte{});
 	clen := len(bytes);
-	for i, s := range variants {
+	for _, s := range variants {
 		fmt.Printf("%s %d\n", s, countMatches(s, bytes));
 	}
-	for i, sub := range substs {
+	for _, sub := range substs {
 		bytes = compile(sub.pat).ReplaceAll(bytes, strings.Bytes(sub.repl));
 	}
 	fmt.Printf("\n%d\n%d\n%d\n", ilen, clen, len(bytes));
diff --git a/test/bugs/bug193.go b/test/bugs/bug193.go
index df768b930f..f6b03e13d2 100644
--- a/test/bugs/bug193.go
+++ b/test/bugs/bug193.go
@@ -12,4 +12,5 @@ func main() {
 	y1 := float(ss);
 	y2 := float(1<<s);  // ERROR "shift"
 	y3 := string(1<<s);  // ERROR "shift"
+	_, _, _, _, _ = s, ss, y1, y2, y3;
 }
diff --git a/test/chan/perm.go b/test/chan/perm.go
index b19cbf3261..502e787a5b 100644
--- a/test/chan/perm.go
+++ b/test/chan/perm.go
@@ -22,27 +22,36 @@ func main() {
 
 	c <- 0;		// ok
 	ok := c <- 0;	// ok
+	_ = ok;
 	<-c;		// ok
 	x, ok := <-c;	// ok
+	_, _ = x, ok;
 
 	cr <- 0;	// ERROR "send"
 	ok = cr <- 0;	// ERROR "send"
+	_ = ok;
 	<-cr;		// ok
 	x, ok = <-cr;	// ok
+	_, _ = x, ok;
 
 	cs <- 0;	// ok
 	ok = cs <- 0;	// ok
+	_ = ok;
 	<-cs;		// ERROR "receive"
 	x, ok = <-cs;	// ERROR "receive"
+	_, _ = x, ok;
 
 	select {
 	case c <- 0:	// ok
 	case x := <-c:	// ok
+		_ = x;
 
 	case cr <- 0:	// ERROR "send"
 	case x := <-cr:	// ok
+		_ = x;
 
 	case cs <- 0:	// ok;
 	case x := <-cs:	// ERROR "receive"
+		_ = x;
 	}
 }
diff --git a/test/decl.go b/test/decl.go
index 273d0ecffc..6e8cbab205 100644
--- a/test/decl.go
+++ b/test/decl.go
@@ -14,6 +14,7 @@ func f3() (float, int, string) { return 1, 2, "3" }
 
 func x() (s string) {
 	a, b, s := f3();
+	_, _ = a, b;
 	return	// tests that result var is in scope for redeclaration
 }
 
diff --git a/test/declbad.go b/test/declbad.go
index 04f5ac04b8..5fbb04ab5d 100644
--- a/test/declbad.go
+++ b/test/declbad.go
@@ -17,35 +17,42 @@ func main() {
 		// simple redeclaration
 		i := f1();
 		i := f1();	// ERROR "redeclared|no new"
+		_ = i;
 	}
 	{
 		// change of type for f
 		i, f, s := f3();
 		f, g, t := f3();	// ERROR "redeclared|cannot assign|incompatible"
+		_, _, _, _, _ = i, f, s, g, t;
 	}
 	{
 		// change of type for i
 		i, f, s := f3();
 		j, i, t := f3();	// ERROR "redeclared|cannot assign|incompatible"
+		_, _, _, _, _ = i, f, s, j, t;
 	}
 	{
 		// no new variables
 		i, f, s := f3();
 		i, f := f2();	// ERROR "redeclared|no new"
+		_, _, _ = i, f, s;
 	}
 	{
 		// single redeclaration
 		i, f, s := f3();
 		i := f1();		// ERROR "redeclared|no new|incompatible"
+		_, _, _ = i, f, s;
 	}
 		// double redeclaration
 	{
 		i, f, s := f3();
 		i, f := f2();	// ERROR "redeclared|no new"
+		_, _, _ = i, f, s;
 	}
 	{
 		// triple redeclaration
 		i, f, s := f3();
 		i, f, s := f3();	// ERROR "redeclared|no new"
+		_, _, _ = i, f, s;
 	}
 }
diff --git a/test/escape.go b/test/escape.go
index d2534c60dd..2c5881d49c 100644
--- a/test/escape.go
+++ b/test/escape.go
@@ -112,7 +112,7 @@ func select_escapes1(x int, y int) (*int, *int) {
 func range_escapes(x int) *int {
 	var a [1]int;
 	a[0] = x;
-	for k, v := range a {
+	for _, v := range a {
 		return &v;
 	}
 	return nil;
diff --git a/test/fixedbugs/bug022.go b/test/fixedbugs/bug022.go
index 0250135a52..f94a585693 100644
--- a/test/fixedbugs/bug022.go
+++ b/test/fixedbugs/bug022.go
@@ -10,6 +10,7 @@ func putint(digits *string) {
 	var i byte;
 	i = (*digits)[7];  // compiles
 	i = digits[7];  // ERROR "illegal|is not|invalid"
+	_ = i;
 }
 
 func main() {
diff --git a/test/fixedbugs/bug030.go b/test/fixedbugs/bug030.go
index e1fce0180d..7efde9b445 100644
--- a/test/fixedbugs/bug030.go
+++ b/test/fixedbugs/bug030.go
@@ -9,4 +9,5 @@ package main
 func main() {
 	var x int;
 	x := 0; // ERROR "declar|:="
+	_ = x;
 }
diff --git a/test/fixedbugs/bug047.go b/test/fixedbugs/bug047.go
index 805647b3d9..f3749e7397 100644
--- a/test/fixedbugs/bug047.go
+++ b/test/fixedbugs/bug047.go
@@ -18,4 +18,6 @@ func main() {
 
 	type M map[int] int;
 	m0 := M{7:8};
+
+	_, _ = t, m0;
 }
diff --git a/test/fixedbugs/bug048.go b/test/fixedbugs/bug048.go
index fbfc120131..b9fee7899c 100644
--- a/test/fixedbugs/bug048.go
+++ b/test/fixedbugs/bug048.go
@@ -9,4 +9,5 @@ package main
 func main() {
 	type M map[int] int;
 	m1 := M{7 : 8};
+	_ = m1;
 }
diff --git a/test/fixedbugs/bug056.go b/test/fixedbugs/bug056.go
index d816b74686..050a4a5c5d 100644
--- a/test/fixedbugs/bug056.go
+++ b/test/fixedbugs/bug056.go
@@ -12,6 +12,7 @@ func frexp() (a int, b float64) {
 
 func main() {
 	a, b := frexp();
+	_, _ = a, b;
 }
 
 /*
diff --git a/test/fixedbugs/bug065.go b/test/fixedbugs/bug065.go
index 7ff373eb01..a5d1bedddb 100644
--- a/test/fixedbugs/bug065.go
+++ b/test/fixedbugs/bug065.go
@@ -8,4 +8,5 @@ package main
 
 func main() {
 	k, l, m := 0,0,0;
+	_, _, _ = k, l, m;
 }
diff --git a/test/fixedbugs/bug143.go b/test/fixedbugs/bug143.go
index af96075066..2f575fcfed 100644
--- a/test/fixedbugs/bug143.go
+++ b/test/fixedbugs/bug143.go
@@ -18,13 +18,16 @@ func main() {
 	mp := &m;
 
 	{
-		x, ok := m["key"]
+		x, ok := m["key"];
+		_, _ = x, ok;
 	}
 	{
-		x, ok := (*mp)["key"]
+		x, ok := (*mp)["key"];
+		_, _ = x, ok;
 	}
 	{
-		x, ok := f()["key"]
+		x, ok := f()["key"];
+		_, _ = x, ok;
 	}
 	{
 		var x int;
diff --git a/test/fixedbugs/bug146.go b/test/fixedbugs/bug146.go
index 41a6d3afd9..bfb7529d6a 100644
--- a/test/fixedbugs/bug146.go
+++ b/test/fixedbugs/bug146.go
@@ -11,4 +11,5 @@ func main() {
 	a := [...]byte{ 0 };
 	b := Slice(&a);		// This should be OK.
 	c := Slice(a);		// ERROR "invalid|illegal|cannot"
+	_, _ = b, c;
 }
diff --git a/test/fixedbugs/bug152.go b/test/fixedbugs/bug152.go
index 29cb1a065b..30c3cac91f 100644
--- a/test/fixedbugs/bug152.go
+++ b/test/fixedbugs/bug152.go
@@ -8,7 +8,7 @@ package main
 
 func main() {
 	s := 0;
-	for i, v := range []int{1} {
+	for _, v := range []int{1} {
 		s += v;
 	}
 	if s != 1 {
diff --git a/test/fixedbugs/bug173.go b/test/fixedbugs/bug173.go
index a9e07e9d93..898b8400ba 100644
--- a/test/fixedbugs/bug173.go
+++ b/test/fixedbugs/bug173.go
@@ -14,8 +14,8 @@ type T string
 func main() {
 	var t T = "hello";
 	println(t[0:4], t[4]);
-	for i, x := range t {
+	for _, _ = range t {
 	}
-	for i := range t {
+	for _ = range t {
 	}
 }
diff --git a/test/fixedbugs/bug183.go b/test/fixedbugs/bug183.go
index 47f8bfe746..7fd6e4942f 100644
--- a/test/fixedbugs/bug183.go
+++ b/test/fixedbugs/bug183.go
@@ -11,7 +11,8 @@ type T int
 func f() {
 	var x struct { T };
 	var y struct { T T };
-	x = y	// ERROR "cannot|incompatible"
+	x = y;	// ERROR "cannot|incompatible"
+	_ = x;
 }
 
 type T1 struct { T }
@@ -20,6 +21,7 @@ type T2 struct { T T }
 func g() {
 	var x T1;
 	var y T2;
-	x = y	// ERROR "cannot|incompatible"
+	x = y;	// ERROR "cannot|incompatible"
+	_ = x;
 }
 
diff --git a/test/fixedbugs/bug184.go b/test/fixedbugs/bug184.go
index 95a76d081c..363af6c857 100644
--- a/test/fixedbugs/bug184.go
+++ b/test/fixedbugs/bug184.go
@@ -39,9 +39,11 @@ func fmter() (s string, i int, t string) {
 func main() {
 	b := g();
 	bb, ok := b.(*Buffer);
+	_, _, _ = b, bb, ok;
 
 	b, ok = i();
 	bb, ok = b.(*Buffer);
+	_, _, _ = b, bb, ok;
 
 	s := fmt.Sprintf(fmter());
 	if s != "0x64 \"hello\"" {
diff --git a/test/fixedbugs/bug189.go b/test/fixedbugs/bug189.go
index d585ac463d..ce338305cd 100644
--- a/test/fixedbugs/bug189.go
+++ b/test/fixedbugs/bug189.go
@@ -14,4 +14,5 @@ func main() {
 	s1 := S{a: 7};	// ok - field is named
 	s3 := S{7, 11};	// ok - all fields have values
 	s2 := S{7};	// ERROR "too few"
+	_, _, _ = s1, s3, s2;
 }
diff --git a/test/fixedbugs/bug201.go b/test/fixedbugs/bug201.go
index 81989ffa36..e72d8f9b9b 100644
--- a/test/fixedbugs/bug201.go
+++ b/test/fixedbugs/bug201.go
@@ -16,18 +16,18 @@ func (MyInt) m(*T1) { }
 func main() {
 	{
 		var i interface{} = new(T1);
-		v1, ok1 := i.(*T1);
-		v2, ok2 := i.(*T2);
-		v3, ok3 := i.(*T3);
+		_, ok1 := i.(*T1);
+		_, ok2 := i.(*T2);
+		_, ok3 := i.(*T3);
 		if !ok1 || ok2 || ok3 {
 			panicln("*T1", ok1, ok2, ok3);
 		}
 	}
 	{
 		var i interface{} = MyInt(0);
-		v1, ok1 := i.(interface{ m(*T1) });
-		v2, ok2 := i.(interface{ m(*T2) });
-		v3, ok3 := i.(interface{ m(*T3) });
+		_, ok1 := i.(interface{ m(*T1) });
+		_, ok2 := i.(interface{ m(*T2) });
+		_, ok3 := i.(interface{ m(*T3) });
 		if !ok1 || ok2 || ok3 {
 			panicln("T", ok1, ok2, ok3);
 		}
diff --git a/test/fixedbugs/bug204.go b/test/fixedbugs/bug204.go
index 6c3540289f..d4534c27c5 100644
--- a/test/fixedbugs/bug204.go
+++ b/test/fixedbugs/bug204.go
@@ -9,7 +9,7 @@ package main
 func main() {
 	nchar := 0;
 	a := []int { '日', '本', '語', 0xFFFD };
-	for pos, char := range "日本語\xc0" {
+	for _, char := range "日本語\xc0" {
 		if nchar >= len(a) {
 			println("BUG");
 			break;
diff --git a/test/initialize.go b/test/initialize.go
index 5fde9dabaf..807bf5bda2 100644
--- a/test/initialize.go
+++ b/test/initialize.go
@@ -50,7 +50,7 @@ var same = []Same {
 
 func main() {
 	ok := true;
-	for i, s := range same {
+	for _, s := range same {
 		if !reflect.DeepEqual(s.a, s.b) {
 			ok = false;
 			fmt.Printf("not same: %v and %v\n", s.a, s.b);
diff --git a/test/mallocrep1.go b/test/mallocrep1.go
index e78a9ce9ca..2f9900d940 100644
--- a/test/mallocrep1.go
+++ b/test/mallocrep1.go
@@ -87,7 +87,7 @@ func AllocAndFree(size, count int) {
 }
 
 func atoi(s string) int {
-	i, xx1 := strconv.Atoi(s);
+	i, _ := strconv.Atoi(s);
 	return i
 }
 
diff --git a/test/map.go b/test/map.go
index 95da48c75d..d09734a130 100644
--- a/test/map.go
+++ b/test/map.go
@@ -140,7 +140,6 @@ func main() {
 		s := strconv.Itoa(i);
 		s10 := strconv.Itoa(i*10);
 		f := float(i);
-		t := T{int64(i), f};
 		// BUG m := M(i, i+1);
 		if mib[i] != (i != 0) {
 			fmt.Printf("mib[%d] = %t\n", i, mib[i]);
@@ -193,133 +192,132 @@ func main() {
 	for i := 0; i < count; i++ {
 		s := strconv.Itoa(i);
 		f := float(i);
-		t := T{int64(i), f};
 		{
-			a, b := mib[i];
+			_, b := mib[i];
 			if !b {
 				fmt.Printf("tuple existence decl: mib[%d]\n", i);
 			}
-			a, b = mib[i];
+			_, b = mib[i];
 			if !b {
 				fmt.Printf("tuple existence assign: mib[%d]\n", i);
 			}
 		}
 		{
-			a, b := mii[i];
+			_, b := mii[i];
 			if !b {
 				fmt.Printf("tuple existence decl: mii[%d]\n", i);
 			}
-			a, b = mii[i];
+			_, b = mii[i];
 			if !b {
 				fmt.Printf("tuple existence assign: mii[%d]\n", i);
 			}
 		}
 		{
-			a, b := mfi[f];
+			_, b := mfi[f];
 			if !b {
 				fmt.Printf("tuple existence decl: mfi[%d]\n", i);
 			}
-			a, b = mfi[f];
+			_, b = mfi[f];
 			if !b {
 				fmt.Printf("tuple existence assign: mfi[%d]\n", i);
 			}
 		}
 		{
-			a, b := mif[i];
+			_, b := mif[i];
 			if !b {
 				fmt.Printf("tuple existence decl: mif[%d]\n", i);
 			}
-			a, b = mif[i];
+			_, b = mif[i];
 			if !b {
 				fmt.Printf("tuple existence assign: mif[%d]\n", i);
 			}
 		}
 		{
-			a, b := mis[i];
+			_, b := mis[i];
 			if !b {
 				fmt.Printf("tuple existence decl: mis[%d]\n", i);
 			}
-			a, b = mis[i];
+			_, b = mis[i];
 			if !b {
 				fmt.Printf("tuple existence assign: mis[%d]\n", i);
 			}
 		}
 		{
-			a, b := msi[s];
+			_, b := msi[s];
 			if !b {
 				fmt.Printf("tuple existence decl: msi[%d]\n", i);
 			}
-			a, b = msi[s];
+			_, b = msi[s];
 			if !b {
 				fmt.Printf("tuple existence assign: msi[%d]\n", i);
 			}
 		}
 		{
-			a, b := mss[s];
+			_, b := mss[s];
 			if !b {
 				fmt.Printf("tuple existence decl: mss[%d]\n", i);
 			}
-			a, b = mss[s];
+			_, b = mss[s];
 			if !b {
 				fmt.Printf("tuple existence assign: mss[%d]\n", i);
 			}
 		}
 		{
-			a, b := mspa[s];
+			_, b := mspa[s];
 			if !b {
 				fmt.Printf("tuple existence decl: mspa[%d]\n", i);
 			}
-			a, b = mspa[s];
+			_, b = mspa[s];
 			if !b {
 				fmt.Printf("tuple existence assign: mspa[%d]\n", i);
 			}
 		}
 		{
-			a, b := mipT[i];
+			_, b := mipT[i];
 			if !b {
 				fmt.Printf("tuple existence decl: mipT[%d]\n", i);
 			}
-			a, b = mipT[i];
+			_, b = mipT[i];
 			if !b {
 				fmt.Printf("tuple existence assign: mipT[%d]\n", i);
 			}
 		}
 		{
-			a, b := mpTi[apT[i]];
+			_, b := mpTi[apT[i]];
 			if !b {
 				fmt.Printf("tuple existence decl: mpTi[apT[%d]]\n", i);
 			}
-			a, b = mpTi[apT[i]];
+			_, b = mpTi[apT[i]];
 			if !b {
 				fmt.Printf("tuple existence assign: mpTi[apT[%d]]\n", i);
 			}
 		}
 		{
-			a, b := mipM[i];
+			_, b := mipM[i];
 			if !b {
 				fmt.Printf("tuple existence decl: mipM[%d]\n", i);
 			}
-			a, b = mipM[i];
+			_, b = mipM[i];
 			if !b {
 				fmt.Printf("tuple existence assign: mipM[%d]\n", i);
 			}
 		}
 		{
-			a, b := mit[i];
+			_, b := mit[i];
 			if !b {
 				fmt.Printf("tuple existence decl: mit[%d]\n", i);
 			}
-			a, b = mit[i];
+			_, b = mit[i];
 			if !b {
 				fmt.Printf("tuple existence assign: mit[%d]\n", i);
 			}
 		}
 //		{
-//			a, b := mti[t];
+//			_, b := mti[t];
 //			if !b {
 //				fmt.Printf("tuple existence decl: mti[%d]\n", i);
 //			}
-//			a, b = mti[t];
+//			_, b = mti[t];
 //			if !b {
 //				fmt.Printf("tuple existence assign: mti[%d]\n", i);
 //			}
@@ -331,133 +329,132 @@ func main() {
 	for i := count; i < 2*count; i++ {
 		s := strconv.Itoa(i);
 		f := float(i);
-		t := T{int64(i),f};
 		{
-			a, b := mib[i];
+			_, b := mib[i];
 			if b {
 				fmt.Printf("tuple nonexistence decl: mib[%d]", i);
 			}
-			a, b = mib[i];
+			_, b = mib[i];
 			if b {
 				fmt.Printf("tuple nonexistence assign: mib[%d]", i);
 			}
 		}
 		{
-			a, b := mii[i];
+			_, b := mii[i];
 			if b {
 				fmt.Printf("tuple nonexistence decl: mii[%d]", i);
 			}
-			a, b = mii[i];
+			_, b = mii[i];
 			if b {
 				fmt.Printf("tuple nonexistence assign: mii[%d]", i);
 			}
 		}
 		{
-			a, b := mfi[f];
+			_, b := mfi[f];
 			if b {
 				fmt.Printf("tuple nonexistence decl: mfi[%d]", i);
 			}
-			a, b = mfi[f];
+			_, b = mfi[f];
 			if b {
 				fmt.Printf("tuple nonexistence assign: mfi[%d]", i);
 			}
 		}
 		{
-			a, b := mif[i];
+			_, b := mif[i];
 			if b {
 				fmt.Printf("tuple nonexistence decl: mif[%d]", i);
 			}
-			a, b = mif[i];
+			_, b = mif[i];
 			if b {
 				fmt.Printf("tuple nonexistence assign: mif[%d]", i);
 			}
 		}
 		{
-			a, b := mis[i];
+			_, b := mis[i];
 			if b {
 				fmt.Printf("tuple nonexistence decl: mis[%d]", i);
 			}
-			a, b = mis[i];
+			_, b = mis[i];
 			if b {
 				fmt.Printf("tuple nonexistence assign: mis[%d]", i);
 			}
 		}
 		{
-			a, b := msi[s];
+			_, b := msi[s];
 			if b {
 				fmt.Printf("tuple nonexistence decl: msi[%d]", i);
 			}
-			a, b = msi[s];
+			_, b = msi[s];
 			if b {
 				fmt.Printf("tuple nonexistence assign: msi[%d]", i);
 			}
 		}
 		{
-			a, b := mss[s];
+			_, b := mss[s];
 			if b {
 				fmt.Printf("tuple nonexistence decl: mss[%d]", i);
 			}
-			a, b = mss[s];
+			_, b = mss[s];
 			if b {
 				fmt.Printf("tuple nonexistence assign: mss[%d]", i);
 			}
 		}
 		{
-			a, b := mspa[s];
+			_, b := mspa[s];
 			if b {
 				fmt.Printf("tuple nonexistence decl: mspa[%d]", i);
 			}
-			a, b = mspa[s];
+			_, b = mspa[s];
 			if b {
 				fmt.Printf("tuple nonexistence assign: mspa[%d]", i);
 			}
 		}
 		{
-			a, b := mipT[i];
+			_, b := mipT[i];
 			if b {
 				fmt.Printf("tuple nonexistence decl: mipT[%d]", i);
 			}
-			a, b = mipT[i];
+			_, b = mipT[i];
 			if b {
 				fmt.Printf("tuple nonexistence assign: mipT[%d]", i);
 			}
 		}
 		{
-			a, b := mpTi[apT[i]];
+			_, b := mpTi[apT[i]];
 			if b {
 				fmt.Printf("tuple nonexistence decl: mpTi[apt[%d]]", i);
 			}
-			a, b = mpTi[apT[i]];
+			_, b = mpTi[apT[i]];
 			if b {
 				fmt.Printf("tuple nonexistence assign: mpTi[apT[%d]]", i);
 			}
 		}
 		{
-			a, b := mipM[i];
+			_, b := mipM[i];
 			if b {
 				fmt.Printf("tuple nonexistence decl: mipM[%d]", i);
 			}
-			a, b = mipM[i];
+			_, b = mipM[i];
 			if b {
 				fmt.Printf("tuple nonexistence assign: mipM[%d]", i);
 			}
 		}
 //		{
-//			a, b := mti[t];
+//			_, b := mti[t];
 //			if b {
 //				fmt.Printf("tuple nonexistence decl: mti[%d]", i);
 //			}
-//			a, b = mti[t];
+//			_, b = mti[t];
 //			if b {
 //				fmt.Printf("tuple nonexistence assign: mti[%d]", i);
 //			}
 //		}
 		{
-			a, b := mit[i];
+			_, b := mit[i];
 			if b {
 				fmt.Printf("tuple nonexistence decl: mit[%d]", i);
 			}
-			a, b = mit[i];
+			_, b = mit[i];
 			if b {
 				fmt.Printf("tuple nonexistence assign: mit[%d]", i);
 			}
@@ -487,10 +484,10 @@ func main() {
 			fmt.Printf("update mipM[%d][%d] = %i\n", i, i, mipM[i][i]);
 		}
 	}
-	
+
 	// test range on nil map
 	var mnil map[string] int;
-	for x, y := range mnil {
+	for _, _ = range mnil {
 		panic("range mnil");
 	}
 }
diff --git a/test/range.go b/test/range.go
index 7a8c686350..7abc80c66d 100644
--- a/test/range.go
+++ b/test/range.go
@@ -42,7 +42,7 @@ func makearray() []int {
 
 func testarray() {
 	s := 0;
-	for k, v := range makearray() {
+	for _, v := range makearray() {
 		s += v;
 	}
 	if nmake != 1 {
diff --git a/usr/dsymonds/iterable/iterable_test.go b/usr/dsymonds/iterable/iterable_test.go
index 512cac1398..28bdfb66f7 100644
--- a/usr/dsymonds/iterable/iterable_test.go
+++ b/usr/dsymonds/iterable/iterable_test.go
@@ -13,7 +13,7 @@ type IntArray []int;
 func (arr IntArray) Iter() <-chan interface {} {
 	ch := make(chan interface {});
 	go func() {
-		for i, x := range arr {
+		for _, x := range arr {
 			ch <- x
 		}
 		close(ch)