Update sys.zig

src/bun.js/api/bun/udp_socket.zig

@@ -330,7 +330,11 @@ pub const UDPSocket = struct {
         )) |socket| {
             this.socket = socket;
         } else {
-            globalThis.throw("Failed to bind socket", .{});
+            if (bun.sys.Error.fromLibcErrno(.bind)) |err| {
+                globalThis.throwValue(err.toJSC(globalThis));
+            } else {
+                globalThis.throwError("Failed to bind socket", .{});
+            }
             return .zero;
         }
 

src/sys.zig

@@ -225,6 +225,7 @@ pub const Tag = enum(u8) {
     pidfd_open,
     poll,
     watch,
+    bind,
 
     kevent,
     kqueue,
@@ -297,6 +298,12 @@ pub const Error = struct {
         return copy;
     }
 
+    pub fn fromLibcErrno(syscall: Syscall.Tag) ?Error {
+        const errno = bun.C.getErrno(@as(i32, -1));
+        if (errno == .SUCCESS) return null;
+        return .{ .errno = @intFromEnum(errno), .syscall = syscall };
+    }
+
     pub fn fromCode(errno: E, syscall: Syscall.Tag) Error {
         return .{
             .errno = @as(Int, @intCast(@intFromEnum(errno))),