FX_BOOL considered harmful.

core/include/fxcrt/fx_system.h

 // 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
 
 #ifndef CORE_INCLUDE_FXCRT_FX_SYSTEM_H_
 #define CORE_INCLUDE_FXCRT_FX_SYSTEM_H_
 
 #include <assert.h>
@@ skipping 53 matching lines @@
 #include <Carbon/Carbon.h>
 #endif
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 typedef void*                   FX_POSITION; // Keep until fxcrt containers gone
 typedef unsigned short          FX_WORD;     // Keep - "an efficient small type"
 typedef unsigned int            FX_DWORD;    // Keep - "an efficient type"
 typedef float                   FX_FLOAT;    // Keep, allow upgrade to doubles.
-typedef int                     FX_BOOL;     // Keep, sadly not always 0 or 1.
 typedef char                    FX_CHAR;     // Keep, questionable signedness.
 typedef wchar_t                 FX_WCHAR;    // Keep, maybe bad platform wchars.
 
 // PDFium string sizes are limited to 2^31-1, and the value is signed to
 // allow -1 as a placeholder for "unknown".
 // TODO(palmer): it should be a |size_t|, or at least unsigned.
 typedef int FX_STRSIZE;
 
 #if defined(DEBUG) && !defined(_DEBUG)
 #define _DEBUG
 #endif
 
-#ifndef TRUE
-#define TRUE    1
-#endif
-
-#ifndef FALSE
-#define FALSE   0
-#endif
-
 #ifndef NULL
 #define NULL    0
 #endif
 
 #define FXSYS_assert assert
 #ifndef ASSERT
 #ifdef _DEBUG
 #define ASSERT FXSYS_assert
 #else
 #define ASSERT(a)
@@ skipping 181 matching lines @@
 
 // Prevent a function from ever being inlined, typically because we'd
 // like it to appear in stack traces.
 #if  _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
 #define NEVER_INLINE __declspec(noinline)
 #else  // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
 #define NEVER_INLINE __attribute__((__noinline__))
 #endif  // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
 
 #endif  // CORE_INCLUDE_FXCRT_FX_SYSTEM_H_