FX_BOOL considered harmful.

core/src/fdrm/crypto/fx_crypt.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../../include/fdrm/fx_crypt.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ skipping 231 matching lines @@
     PUT_FX_DWORD( ctx->state[2], digest,  8 );
     PUT_FX_DWORD( ctx->state[3], digest, 12 );
 }
 void CRYPT_MD5Generate(const uint8_t* input, FX_DWORD length, uint8_t digest[16])
 {
     md5_context ctx;
     CRYPT_MD5Start(&ctx);
     CRYPT_MD5Update(&ctx, input, length);
     CRYPT_MD5Finish(&ctx, digest);
 }
-static FX_BOOL (*g_PubKeyDecryptor)(const uint8_t* pData, FX_DWORD size, uint8_t* data_buf, FX_DWORD& data_len) = NULL;
-void CRYPT_SetPubKeyDecryptor(FX_BOOL (*func)(const uint8_t* pData, FX_DWORD size, uint8_t* data_buf, FX_DWORD& data_len))
+static bool (*g_PubKeyDecryptor)(const uint8_t* pData, FX_DWORD size, uint8_t* data_buf, FX_DWORD& data_len) = NULL;
+void CRYPT_SetPubKeyDecryptor(bool (*func)(const uint8_t* pData, FX_DWORD size, uint8_t* data_buf, FX_DWORD& data_len))
 {
     g_PubKeyDecryptor = func;
 }
 #ifdef __cplusplus
 };
 #endif