libmongocrypt
mongocrypt-compat.h
1 /*
2  * Copyright 2018-present MongoDB, Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #ifndef MONGOCRYPT_COMPAT_H
17 #define MONGOCRYPT_COMPAT_H
18 
19 /* Utilities for cross-platform and C89 compatibility */
20 
21 /* Copied from bson-compat.h from the C driver. */
22 #include <stdint.h>
23 #include <stdbool.h>
24 #ifdef MONGOCRYPT_HAVE_STDBOOL_H
25 /*
26  TODO - check for stdbool.h if we need to support older compilers and reconile
27  with kms-message's rules for including stdbool.h
28 */
29 #elif !defined(__bool_true_false_are_defined)
30 #ifndef __cplusplus
31 typedef signed char bool;
32 #define false 0
33 #define true 1
34 #endif
35 #define __bool_true_false_are_defined 1
36 #endif
37 
38 #ifdef __GNUC__
39 #define MONGOCRYPT_WARN_UNUSED_RESULT __attribute__ ((warn_unused_result))
40 #else
41 #define MONGOCRYPT_WARN_UNUSED_RESULT
42 #endif
43 
44 #endif /* MONGOCRYPT_COMPAT_H */