feat: update zig

.github/workflows/integrations.yml

@@ -20,7 +20,7 @@ jobs:
 
       - name: install zig
         run: |
-          ZIG_VERSION=0.12.0-dev.1647+325e0f5f0
+          ZIG_VERSION=0.12.0-dev.1664+8ca4a5240
           wget https://ziglang.org/builds/zig-linux-x86_64-$ZIG_VERSION.tar.xz
           tar xf zig-linux-x86_64-$ZIG_VERSION.tar.xz
           mv zig-linux-x86_64-$ZIG_VERSION $HOME/zig-build

src/auth.zig

@@ -57,7 +57,7 @@ pub fn decodePublicKey(encoded_bytes: []const u8, allocator: std.mem.Allocator)
         break :blk std.mem.trim(u8, encoded_bytes[base64_start..base64_end], " \t\r\n");
     };
 
-    var dest = try allocator.alloc(u8, try base64.calcSizeUpperBound(base64_encoded.len));
+    const dest = try allocator.alloc(u8, try base64.calcSizeUpperBound(base64_encoded.len));
     decoded_pk.allocated = dest;
     errdefer allocator.free(decoded_pk.allocated);
 
@@ -176,7 +176,7 @@ test "scrambleSHA256Password" {
 // https://mariadb.com/kb/en/sha256_password-plugin/#rsa-encrypted-password
 // RSA encrypted value of XOR(password, seed) using server public key (RSA_PKCS1_OAEP_PADDING).
 pub fn encryptPassword(allocator: std.mem.Allocator, password: []const u8, auth_data: *const [20]u8, pk: *const PublicKey) ![]const u8 {
-    var plain = blk: {
+    const plain = blk: {
         var plain = try allocator.alloc(u8, password.len + 1);
         @memcpy(plain.ptr, password);
         plain[plain.len - 1] = 0;
@@ -206,8 +206,8 @@ fn rsaEncryptOAEP(allocator: std.mem.Allocator, msg: []const u8, pk: *const Publ
     var em = try allocator.alloc(u8, k);
     defer allocator.free(em);
     @memset(em, 0);
-    var seed = em[1 .. 1 + digest_len];
-    var db = em[1 + digest_len ..];
+    const seed = em[1 .. 1 + digest_len];
+    const db = em[1 + digest_len ..];
 
     @memcpy(db[0..lHash.len], &lHash);
     db[db.len - msg.len - 1] = 1;
@@ -230,7 +230,7 @@ fn encryptMsg(allocator: std.mem.Allocator, msg: []const u8, pk: *const PublicKe
     const m = try Fe.fromBytes(pk.*.n, msg, .big);
     const e = try pk.n.powPublic(m, pk.e);
 
-    var res = try allocator.alloc(u8, msg.len);
+    const res = try allocator.alloc(u8, msg.len);
     try e.toBytes(res, .big);
     return res;
 }
@@ -259,8 +259,7 @@ fn mgf1XOR(dest: []u8, init_hash: *const Sha1, seed: []const u8) void {
 // incCounter increments a four byte, big-endian counter.
 fn incCounter(c: *[4]u8) void {
     inline for (&.{ 3, 2, 1, 0 }) |i| {
-        const res = @addWithOverflow(c[i], 1);
-        c[i] = res[0];
-        if (res[1] == 0) return; // no overflow, so we're done
+        c[i], const overflow_bit = @addWithOverflow(c[i], 1);
+        if (overflow_bit == 0) return; // no overflow, so we're done
     }
 }

src/helper.zig

@@ -129,7 +129,7 @@ inline fn binResIsNull(null_bitmap: []const u8, col_idx: usize) bool {
 }
 
 test "binResIsNull" {
-    var tests = .{
+    const tests = .{
         .{
             .null_bitmap = &.{0b00000100},
             .col_idx = 0,
@@ -178,7 +178,7 @@ pub fn ResultSetIter(comptime ResultRowType: type) type {
         pub fn collect(iter: *const ResultSetIter(TextResultRow), allocator: std.mem.Allocator) !TableTexts {
             var row_acc = std.ArrayList(TextResultRow).init(allocator);
             while (try iter.next(allocator)) |row| {
-                var new_row_ptr = try row_acc.addOne();
+                const new_row_ptr = try row_acc.addOne();
                 new_row_ptr.* = row;
             }
 

src/protocol/packet.zig

@@ -21,7 +21,7 @@ pub const Packet = struct {
         packet.payload_length = try readUInt24(sbr);
         packet.sequence_id = try readUInt8(sbr);
         packet.payload = blk: {
-            var payload = try allocator.alloc(u8, @as(usize, packet.payload_length));
+            const payload = try allocator.alloc(u8, @as(usize, packet.payload_length));
             try sbr.read(payload);
             break :blk payload;
         };

src/protocol/prepared_statements.zig

@@ -201,9 +201,9 @@ fn nullBinaryParam() BinaryParam {
 }
 
 test "writeNullBitmap" {
-    var nn = nonNullBinaryParam();
-    var n = nullBinaryParam();
-    var tests = .{
+    const nn = nonNullBinaryParam();
+    const n = nullBinaryParam();
+    const tests = .{
         .{
             .params = &.{nn},
             .attributes = &.{nn},

src/protocol/text_command.zig

@@ -75,7 +75,7 @@ pub fn nullBits(params: []const ?QueryParam) u8 {
 }
 
 test "writeNullBitmap - 1" {
-    var params: []const ?QueryParam = &.{
+    const params: []const ?QueryParam = &.{
         null,
         .{
             .type_and_flag = .{ 0, 0 },
@@ -98,7 +98,7 @@ test "writeNullBitmap - 1" {
 }
 
 test "writeNullBitmap - 2" {
-    var params: []const ?QueryParam = &.{
+    const params: []const ?QueryParam = &.{
         null, null, null, null,
         null, null, null, null,
         null, null, null, null,

src/stream_buffered.zig

@@ -123,8 +123,8 @@ pub fn writer(stream: std.net.Stream) Writer {
 
 fn copy(dest: []u8, src: []const u8) usize {
     const amount_copied = @min(dest.len, src.len);
-    var final_dest = dest[0..amount_copied];
-    var final_src = src[0..amount_copied];
+    const final_dest = dest[0..amount_copied];
+    const final_src = src[0..amount_copied];
     @memcpy(final_dest, final_src);
     return amount_copied;
 }

src/utils.zig

@@ -12,7 +12,7 @@ pub fn FixedBytes(comptime max: usize) type {
 
         pub fn set(self: *FixedBytes(max), src: []const u8) void {
             std.debug.assert(src.len <= max);
-            var dest = self.buf[0..src.len];
+            const dest = self.buf[0..src.len];
             @memcpy(dest, src);
             self.len = src.len;
         }