diff --git a/Sources/PerfectMySQL/MySQL.swift b/Sources/PerfectMySQL/MySQL.swift
index 429803b..59d0ba1 100644
--- a/Sources/PerfectMySQL/MySQL.swift
+++ b/Sources/PerfectMySQL/MySQL.swift
@@ -97,7 +97,12 @@ public final class MySQL {
 		}
 		return result
 	}
-	
+
+	/// If false it starts transaction which can be rolled back
+	public func autocommit(_ autocommit: Bool) -> Bool {
+		return mysql_autocommit(mysqlPtr, autocommit)
+	}
+
 	/// Commits the transaction
 	public func commit() -> Bool {
 		var res = mysql_commit(mysqlPtr)
@@ -248,7 +253,7 @@ public final class MySQL {
 	/// Sets connect options for connect() with boolean option argument
 	@discardableResult
 	public func setOption(_ option: MySQLOpt, _ b: Bool) -> Bool {
-		var myB = my_bool(b ? 1 : 0)
+		var myB = false ? 1 : 0
 		return mysql_options(mysqlPtr, exposedOptionToMySQLOption(option), &myB) == 0
 	}
 	
diff --git a/Sources/PerfectMySQL/MySQLCRUD.swift b/Sources/PerfectMySQL/MySQLCRUD.swift
index a81e884..c4716b5 100644
--- a/Sources/PerfectMySQL/MySQLCRUD.swift
+++ b/Sources/PerfectMySQL/MySQLCRUD.swift
@@ -515,7 +515,7 @@ public struct MySQLDatabaseConfiguration: DatabaseConfigurationProtocol {
 	}
 	
 	public func sqlExeDelegate(forSQL: String) throws -> SQLExeDelegate {
-		let noPrepCommands = ["CREATE", "DROP", "ALTER", "BEGIN", "COMMIT", "ROLLBACK"]
+		let noPrepCommands = ["CREATE", "DROP", "ALTER", "BEGIN", "COMMIT", "ROLLBACK", "LOCK", "UNLOCK"]
 		if nil != noPrepCommands.first(where: { forSQL.hasPrefix($0) }) {
 			return MySQLDirectExeDelegate(connection: connection, sql: forSQL)
 		}
diff --git a/Sources/PerfectMySQL/MySQLStmt.swift b/Sources/PerfectMySQL/MySQLStmt.swift
index 67af670..8ca51f0 100644
--- a/Sources/PerfectMySQL/MySQLStmt.swift
+++ b/Sources/PerfectMySQL/MySQLStmt.swift
@@ -294,9 +294,13 @@ public final class MySQLStmt {
 	
 	private func allocated(_ a: [Int8]) -> UnsafeMutableRawBufferPointer? {
 		let buffer = UnsafeMutableRawBufferPointer.allocate(byteCount: a.count, alignment: 0)
-		let u = UnsafeRawPointer(a)
-		if let p = buffer.baseAddress {
-			memcpy(p, u, a.count)
+		a.withUnsafeBytes{ (bufferRawBufferPointer) -> Void in
+			let bufferPointer: UnsafePointer<UInt8> = bufferRawBufferPointer.baseAddress!.assumingMemoryBound(to: UInt8.self)
+			let rawPtr = UnsafeRawPointer(bufferPointer)
+			//let u = UnsafeRawPointer(a)
+			if let p = buffer.baseAddress {
+				memcpy(p, rawPtr, a.count)
+			}
 		}
 		return buffer
 	}