std/os: debug print msghdr bytes

Author: lithdew

lib/std/json.zig

@@ -2014,12 +2014,9 @@ test "parse into struct with duplicate field" {
     const ballast = try testing.allocator.alloc(u64, 1);
     defer testing.allocator.free(ballast);
 
-    const options_first = ParseOptions{ 
-        .allocator = testing.allocator,
-        .duplicate_field_behavior = .UseFirst
-    };
+    const options_first = ParseOptions{ .allocator = testing.allocator, .duplicate_field_behavior = .UseFirst };
 
-    const options_last = ParseOptions{ 
+    const options_last = ParseOptions{
         .allocator = testing.allocator,
         .duplicate_field_behavior = .UseLast,
     };

lib/std/os.zig

@@ -5018,6 +5018,7 @@ pub fn sendmsg(
             std.debug.print("sizeof(usize): {}, sizeof(msghdr): {}, endian: {}, message: {}, flags: {}\n", .{
                 @sizeOf(usize), @sizeOf(std.x.os.Socket.Message), builtin.endian, msg, flags,
             });
+            std.debug.print("bytes of msghdr: {any}\n", .{std.mem.span(std.mem.asBytes(&msg))});
             for (msg.getBuffers()) |buffer, i| {
                 std.debug.print("buffer {}: [ptr: {}, len: {}]\n", .{ i, buffer.ptr, buffer.len });
             }