ssl/ssl_c_test.c

// Copyright 2019 The BoringSSL Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include <openssl/ssl.h>

int BORINGSSL_enum_c_type_test(void);

int BORINGSSL_enum_c_type_test(void) {
#if defined(__cplusplus)
#error "This is testing the behaviour of the C compiler."
#error "It's pointless to build it in C++ mode."
#endif

  // In C++, the enums in ssl.h are explicitly typed as ints to allow them to
  // be predeclared. This function confirms that the C compiler believes them
  // to be the same size as ints. They may differ in signedness, however.
  return sizeof(enum ssl_private_key_result_t) == sizeof(int);
}