diff --git a/src/file.js.c b/src/file.js.c
index 2f2d01e3..03ceeee8 100644
--- a/src/file.js.c
+++ b/src/file.js.c
@@ -84,7 +84,7 @@ static void _file_read_read_callback(uv_fs_t* req)
 	}
 	else
 	{
-		tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, uv_strerror(req->result)));
+		tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(req->result)));
 	}
 	int result = uv_fs_close(req->loop, req, fsreq->file, _file_async_close_callback);
 	if (result < 0)
@@ -108,7 +108,7 @@ static void _file_read_open_callback(uv_fs_t* req)
 		int result = uv_fs_read(req->loop, req, fsreq->file, &buf, 1, 0, _file_read_read_callback);
 		if (result < 0)
 		{
-			tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, uv_strerror(result)));
+			tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(result)));
 			result = uv_fs_close(req->loop, req, fsreq->file, _file_async_close_callback);
 			if (result < 0)
 			{
@@ -119,7 +119,7 @@ static void _file_read_open_callback(uv_fs_t* req)
 	}
 	else
 	{
-		tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, uv_strerror(req->result)));
+		tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(req->result)));
 		uv_fs_req_cleanup(req);
 		tf_free(req);
 	}
@@ -144,7 +144,7 @@ static JSValue _file_read_file(JSContext* context, JSValueConst this_val, int ar
 	int result = uv_fs_open(tf_task_get_loop(task), &req->fs, file_name, UV_FS_O_RDONLY, 0, _file_read_open_callback);
 	if (result < 0)
 	{
-		tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, uv_strerror(result)));
+		tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(result)));
 		uv_fs_req_cleanup(&req->fs);
 		tf_free(req);
 	}
@@ -165,7 +165,7 @@ static void _file_write_write_callback(uv_fs_t* req)
 	}
 	else
 	{
-		tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, uv_strerror(req->result)));
+		tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(req->result)));
 	}
 	int result = uv_fs_close(req->loop, req, fsreq->file, _file_async_close_callback);
 	if (result < 0)
@@ -189,7 +189,7 @@ static void _file_write_open_callback(uv_fs_t* req)
 		int result = uv_fs_write(req->loop, req, fsreq->file, &buf, 1, 0, _file_write_write_callback);
 		if (result < 0)
 		{
-			tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, uv_strerror(result)));
+			tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(result)));
 			result = uv_fs_close(req->loop, req, fsreq->file, _file_async_close_callback);
 			if (result < 0)
 			{
@@ -200,7 +200,7 @@ static void _file_write_open_callback(uv_fs_t* req)
 	}
 	else
 	{
-		tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, uv_strerror(req->result)));
+		tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(req->result)));
 		uv_fs_req_cleanup(req);
 		tf_free(req);
 	}
@@ -243,7 +243,7 @@ static JSValue _file_write_file(JSContext* context, JSValueConst this_val, int a
 	int result = uv_fs_open(tf_task_get_loop(task), &req->fs, file_name, UV_FS_O_CREAT | UV_FS_O_WRONLY, 0644, _file_write_open_callback);
 	if (result < 0)
 	{
-		tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, uv_strerror(result)));
+		tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(result)));
 	}
 	JS_FreeCString(context, file_name);
 	return promise_value;
diff --git a/src/socket.js.c b/src/socket.js.c
index fdd383fe..b3f5b89e 100644
--- a/src/socket.js.c
+++ b/src/socket.js.c
@@ -430,9 +430,7 @@ JSValue _socket_bind(JSContext* context, JSValueConst this_val, int argc, JSValu
 	int result = uv_getaddrinfo(tf_task_get_loop(socket->_task), &data->resolver, _socket_onResolvedForBind, node, port, &hints);
 	if (result != 0)
 	{
-		char error[256];
-		snprintf(error, sizeof(error), "uv_getaddrinfo: %s", uv_strerror(result));
-		tf_task_reject_promise(socket->_task, data->promise, JS_ThrowInternalError(tf_task_get_context(socket->_task), error));
+		tf_task_reject_promise(socket->_task, data->promise, JS_ThrowInternalError(tf_task_get_context(socket->_task), "uv_getaddrinfo: %s", uv_strerror(result)));
 		tf_free(data);
 	}
 	return promise;
@@ -443,18 +441,14 @@ void _socket_onResolvedForBind(uv_getaddrinfo_t* resolver, int status, struct ad
 	socket_resolve_data_t* data = (socket_resolve_data_t*)resolver->data;
 	if (status != 0)
 	{
-		char error[256];
-		snprintf(error, sizeof(error), "uv_getaddrinfo: %s", uv_strerror(status));
-		tf_task_reject_promise(data->socket->_task, data->promise, JS_ThrowInternalError(tf_task_get_context(data->socket->_task), error));
+		tf_task_reject_promise(data->socket->_task, data->promise, JS_ThrowInternalError(tf_task_get_context(data->socket->_task), "uv_getaddrinfo: %s", uv_strerror(status)));
 	}
 	else
 	{
 		int bindResult = uv_tcp_bind(&data->socket->_socket, result->ai_addr, 0);
 		if (bindResult != 0)
 		{
-			char error[256];
-			snprintf(error, sizeof(error), "uv_tcp_bind: %s", uv_strerror(bindResult));
-			tf_task_reject_promise(data->socket->_task, data->promise, JS_ThrowInternalError(tf_task_get_context(data->socket->_task), error));
+			tf_task_reject_promise(data->socket->_task, data->promise, JS_ThrowInternalError(tf_task_get_context(data->socket->_task), "uv_tcp_bind: %s", uv_strerror(bindResult)));
 		}
 		else
 		{
@@ -561,9 +555,7 @@ JSValue _socket_listen(JSContext* context, JSValueConst this_val, int argc, JSVa
 		int result = uv_listen((uv_stream_t*)&socket->_socket, backlog, _socket_onNewConnection);
 		if (result != 0)
 		{
-			char error[256];
-			snprintf(error, sizeof(error), "uv_listen: %s", uv_strerror(result));
-			return JS_ThrowInternalError(context, error);
+			return JS_ThrowInternalError(context, "uv_listen: %s", uv_strerror(result));
 		}
 		return JS_NewInt32(context, result);
 	}
@@ -609,9 +601,7 @@ JSValue _socket_accept(JSContext* context, JSValueConst this_val, int argc, JSVa
 	}
 	else
 	{
-		char error[256];
-		snprintf(error, sizeof(error), "uv_accept: %s", uv_strerror(status));
-		tf_task_reject_promise(socket->_task, promise, JS_ThrowInternalError(context, error));
+		tf_task_reject_promise(socket->_task, promise, JS_ThrowInternalError(context, "uv_accept: %s", uv_strerror(status)));
 	}
 	JS_FreeValue(context, client->_object);
 	return result;
@@ -706,9 +696,7 @@ JSValue _socket_read(JSContext* context, JSValueConst this_val, int argc, JSValu
 		int result = uv_read_start((uv_stream_t*)&socket->_socket, _socket_allocateBuffer, _socket_onRead);
 		if (result != 0)
 		{
-			char error[256];
-			snprintf(error, sizeof(error), "uv_read_start: %s", uv_strerror(result));
-			tf_task_reject_promise(socket->_task, promise, JS_ThrowInternalError(context, error));
+			tf_task_reject_promise(socket->_task, promise, JS_ThrowInternalError(context, "uv_read_start: %s", uv_strerror(result)));
 		}
 		else
 		{
@@ -768,7 +756,7 @@ void _socket_onRead(uv_stream_t* stream, ssize_t readSize, const uv_buf_t* buffe
 					char buffer[8192];
 					if (tf_tls_session_get_error(socket->_tls, buffer, sizeof(buffer)))
 					{
-						tf_task_reject_promise(socket->_task, promise, JS_ThrowInternalError(context, buffer));
+						tf_task_reject_promise(socket->_task, promise, JS_ThrowInternalError(context, "%s", buffer));
 					}
 					else
 					{
@@ -935,7 +923,7 @@ JSValue _socket_write(JSContext* context, JSValueConst this_val, int argc, JSVal
 			char buffer[8192];
 			if (result <= 0 && tf_tls_session_get_error(socket->_tls, buffer, sizeof(buffer)))
 			{
-				tf_task_reject_promise(socket->_task, promise, JS_ThrowInternalError(context, buffer));
+				tf_task_reject_promise(socket->_task, promise, JS_ThrowInternalError(context, "%s", buffer));
 			}
 			else if (result < length)
 			{
@@ -954,9 +942,7 @@ JSValue _socket_write(JSContext* context, JSValueConst this_val, int argc, JSVal
 
 			if (result != 0)
 			{
-				char error[256];
-				snprintf(error, sizeof(error), "uv_write: %s", uv_strerror(result));
-				tf_task_reject_promise(socket->_task, promise, JS_ThrowInternalError(context, error));
+				tf_task_reject_promise(socket->_task, promise, JS_ThrowInternalError(context, "uv_write: %s", uv_strerror(result)));
 			}
 		}
 	}
@@ -979,9 +965,7 @@ void _socket_onWrite(uv_write_t* request, int status)
 		}
 		else
 		{
-			char error[256];
-			snprintf(error, sizeof(error), "uv_write: %s", uv_strerror(status));
-			tf_task_reject_promise(socket->_task, promise, JS_ThrowInternalError(tf_task_get_context(socket->_task), error));
+			tf_task_reject_promise(socket->_task, promise, JS_ThrowInternalError(tf_task_get_context(socket->_task), "uv_write: %s", uv_strerror(status)));
 		}
 	}
 	tf_free(request);
diff --git a/src/ssb.js.c b/src/ssb.js.c
index 25d5c7b9..4905ded4 100644
--- a/src/ssb.js.c
+++ b/src/ssb.js.c
@@ -682,8 +682,8 @@ void tf_ssb_run_file(JSContext* context, const char* file_name)
 	long file_size = ftell(file);
 	fseek(file, 0, SEEK_SET);
 	source = tf_malloc(file_size + 1);
-	fread(source, 1, file_size, file);
-	source[file_size] = '\0';
+	int bytes_read = fread(source, 1, file_size, file);
+	source[bytes_read] = '\0';
 	fclose(file);
 
 	JSValue result = JS_Eval(context, source, file_size, file_name, 0);
diff --git a/src/task.c b/src/task.c
index 7752c85a..5952784e 100644
--- a/src/task.c
+++ b/src/task.c
@@ -294,8 +294,8 @@ static const char* _task_loadFile(const char* fileName)
 		long fileSize = ftell(file);
 		fseek(file, 0, SEEK_SET);
 		result = tf_malloc(fileSize + 1);
-		fread(result, 1, fileSize, file);
-		result[fileSize] = '\0';
+		int bytes_read = fread(result, 1, fileSize, file);
+		result[bytes_read] = '\0';
 		fclose(file);
 	}
 	return result;
@@ -703,11 +703,6 @@ static JSValue _tf_task_getStats(JSContext* context, JSValueConst this_val, int
 	JS_SetPropertyStr(context, result, "tls_malloc_percent", JS_NewFloat64(context, 100.0f * tf_mem_get_tls_malloc_size() / total_memory));
 	JS_SetPropertyStr(context, result, "tf_malloc_percent", JS_NewFloat64(context, 100.0f * tf_mem_get_tf_malloc_size() / total_memory));
 
-#if !defined(_WIN32)
-	struct mallinfo mi = mallinfo();
-	JS_SetPropertyStr(context, result, "arena_percent", JS_NewFloat64(context, 100.0f * mi.arena / total_memory));
-#endif
-
 	JS_SetPropertyStr(context, result, "socket_count", JS_NewInt32(context, tf_socket_get_count()));
 	JS_SetPropertyStr(context, result, "socket_open_count", JS_NewInt32(context, tf_socket_get_open_count()));