Fix: Loop Variable Capturing Issue in Go 1.22 (#171)

* fix: remove copying loop variable

* fix:utilize new int range syntax instead of traditional 3 clause loop

* Remove unnecesary assignment

Co-authored-by: Davis Goodin <[email protected]>

---------

Co-authored-by: Davis Goodin <[email protected]>

Author: mertakman

hash_test.go

@@ -56,7 +56,6 @@ var hashes = [...]crypto.Hash{
 func TestHash(t *testing.T) {
 	msg := []byte("testing")
 	for _, ch := range hashes {
-		ch := ch
 		t.Run(ch.String(), func(t *testing.T) {
 			t.Parallel()
 			if !openssl.SupportsHash(ch) {
@@ -90,7 +89,6 @@ func TestHash(t *testing.T) {
 func TestHash_BinaryMarshaler(t *testing.T) {
 	msg := []byte("testing")
 	for _, ch := range hashes {
-		ch := ch
 		t.Run(ch.String(), func(t *testing.T) {
 			t.Parallel()
 			if !openssl.SupportsHash(ch) {
@@ -122,7 +120,6 @@ func TestHash_BinaryMarshaler(t *testing.T) {
 func TestHash_Clone(t *testing.T) {
 	msg := []byte("testing")
 	for _, ch := range hashes {
-		ch := ch
 		t.Run(ch.String(), func(t *testing.T) {
 			t.Parallel()
 			if !openssl.SupportsHash(ch) {
@@ -163,7 +160,7 @@ func TestHash_ByteWriter(t *testing.T) {
 			h := cryptoToHash(ch)()
 			initSum := h.Sum(nil)
 			bw := h.(io.ByteWriter)
-			for i := 0; i < len(msg); i++ {
+			for i := range len(msg) {
 				bw.WriteByte(msg[i])
 			}
 			h.Reset()

hkdf_test.go

@@ -350,7 +350,7 @@ func TestHKDFMultiRead(t *testing.T) {
 		hkdf := newHKDF(tt.hash, tt.master, tt.salt, tt.info)
 		out := make([]byte, len(tt.out))
 
-		for b := 0; b < len(tt.out); b++ {
+		for b := range len(tt.out) {
 			n, err := io.ReadFull(hkdf, out[b:b+1])
 			if n != 1 || err != nil {
 				t.Errorf("test %d.%d: not enough output bytes: have %d, need %d .", i, b, n, len(tt.out))

hmac_test.go

@@ -18,7 +18,6 @@ func TestHMAC(t *testing.T) {
 		{"sha512", NewSHA512},
 	}
 	for _, tt := range tests {
-		tt := tt
 		t.Run(tt.name, func(t *testing.T) {
 			t.Parallel()
 			h := NewHMAC(tt.fn, nil)

openssl.go

@@ -298,7 +298,7 @@ const wordBytes = bits.UintSize / 8
 func (z BigInt) byteSwap() {
 	for i, d := range z {
 		var n uint = 0
-		for j := 0; j < wordBytes; j++ {
+		for j := range wordBytes {
 			n |= uint(byte(d)) << (8 * (wordBytes - j - 1))
 			d >>= 8
 		}
@@ -400,7 +400,7 @@ func bnToBinPad(bn C.GO_BIGNUM_PTR, to []byte) error {
 		if pad < 0 {
 			return errors.New("openssl: destination buffer too small")
 		}
-		for i := 0; i < pad; i++ {
+		for i := range pad {
 			to[i] = 0
 		}
 		if int(C.go_openssl_BN_bn2bin(bn, base(to[pad:]))) != n {

openssl_test.go

@@ -58,7 +58,7 @@ func TestMain(m *testing.M) {
 	fmt.Println("OpenSSL version:", openssl.VersionText())
 	fmt.Println("FIPS enabled:", openssl.FIPS())
 	status := m.Run()
-	for i := 0; i < 5; i++ {
+	for range 5 {
 		// Run GC a few times to avoid false positives in leak detection.
 		runtime.GC()
 		// Sleep a bit to let the finalizers run.

rsa_test.go

@@ -14,7 +14,6 @@ import (
 
 func TestRSAKeyGeneration(t *testing.T) {
 	for _, size := range []int{2048, 3072} {
-		size := size
 		t.Run(strconv.Itoa(size), func(t *testing.T) {
 			t.Parallel()
 			priv, pub := newRSAKey(t, size)

tls1prf_test.go

@@ -150,7 +150,6 @@ func TestTLS1PRF(t *testing.T) {
 		t.Skip("TLS PRF is not supported")
 	}
 	for _, tt := range tls1prfTests {
-		tt := tt
 		t.Run(tt.hash.String(), func(t *testing.T) {
 			if !openssl.SupportsHash(tt.hash) {
 				t.Skip("skipping: hash not supported")