fix warnings in build

Author: vishesh

Package.swift

@@ -24,7 +24,7 @@ import PackageDescription
 let package = Package(
     name: "FoundationDB",
     platforms: [
-        .macOS(.v14),
+        .macOS(.v15),
     ],
     products: [
         .library(name: "FoundationDB", targets: ["FoundationDB"]),

Sources/FoundationDB/Network.swift

@@ -65,7 +65,7 @@ final class FDBNetwork: Sendable {
 
     /// Stops the FoundationDB network and waits for the network thread to complete.
     deinit {
-        try networkThread.withLock { networkThread in
+        _ = networkThread.withLock { networkThread in
             if networkThread == nil {
                 return networkThread
             }

Sources/FoundationDB/Transaction.swift

@@ -158,7 +158,7 @@ public final class FDBTransaction: TransactionProtocol, @unchecked Sendable {
     }
 
     public func onError(_ error: FDBError) async throws {
-        try await Future<ResultVoid>(
+        _ = try await Future<ResultVoid>(
             fdb_transaction_on_error(transaction, error.code)
         ).getAsync()
     }

Tests/FoundationDBTests/FoundationDBTupleTests.swift

@@ -31,7 +31,7 @@ func testTupleNil() throws {
 
     var offset = 1
     let decoded = try TupleNil.decodeTuple(from: encoded, at: &offset)
-    #expect(decoded is TupleNil, "Should decode back to TupleNil")
+    #expect(type(of: decoded) == TupleNil.self, "Should decode back to TupleNil")
     #expect(offset == 1, "Offset should not advance for TupleNil")
 }
 

Tests/StackTester/Sources/StackTester/StackTester.swift

@@ -296,11 +296,11 @@ class StackMachine {
 
         case "COMMIT":
             let transaction = try currentTransaction()
-            let success = try await transaction.commit()
+            _ = try await transaction.commit()
             store(idx, Array("COMMIT_RESULT".utf8))
 
         case "RESET":
-            if let transaction = transactionMap[transactionName] as? FDBTransaction {
+            if transactionMap[transactionName] as? FDBTransaction != nil {
                 try newTransaction()
             }
 
@@ -329,8 +329,8 @@ class StackMachine {
         case "GET_RANGE":
             // Python/Go order: begin, end, limit, reverse, mode (but Go pops in reverse)
             // Go pops: mode, reverse, limit, endKey, beginKey
-            let mode = waitAndPop().item as! Int64 // Streaming mode, ignore for now
-            let reverse = (waitAndPop().item as! Int64) != 0
+            _ = waitAndPop().item as! Int64 // Streaming mode, ignore for now
+            _ = (waitAndPop().item as! Int64) != 0
             let limit = Int(waitAndPop().item as! Int64)
             let endKey = waitAndPop().item as! [UInt8]
             let beginKey = waitAndPop().item as! [UInt8]
@@ -348,8 +348,8 @@ class StackMachine {
         case "GET_RANGE_STARTS_WITH":
             // Python order: prefix, limit, reverse, mode (pops 4 parameters)
             // Go order: same but pops in reverse
-            let mode = waitAndPop().item as! Int64 // Streaming mode, ignore for now
-            let reverse = (waitAndPop().item as! Int64) != 0
+            _ = waitAndPop().item as! Int64 // Streaming mode, ignore for now
+            _ = (waitAndPop().item as! Int64) != 0
             let limit = Int(waitAndPop().item as! Int64)
             let prefix = waitAndPop().item as! [UInt8]
             let transaction = try currentTransaction()
@@ -370,8 +370,8 @@ class StackMachine {
             // Python pops 10 parameters: begin_key, begin_or_equal, begin_offset, end_key, end_or_equal, end_offset, limit, reverse, mode, prefix
             // Go pops in reverse order
             let prefix = waitAndPop().item as! [UInt8]
-            let mode = waitAndPop().item as! Int64 // Streaming mode, ignore for now
-            let reverse = (waitAndPop().item as! Int64) != 0
+            _ = waitAndPop().item as! Int64 // Streaming mode, ignore for now
+            _ = (waitAndPop().item as! Int64) != 0
             let limit = Int(waitAndPop().item as! Int64)
             let endOffset = Int(waitAndPop().item as! Int64)
             let endOrEqual = (waitAndPop().item as! Int64) != 0
@@ -651,7 +651,7 @@ class StackMachine {
 
         case "START_THREAD":
             // Threading not supported in current implementation, just consume the instruction
-            let instruction = waitAndPop().item
+            _ = waitAndPop().item
             // Could implement this with Task.detached in the future
 
         case "WAIT_EMPTY":