thodg/libgit2/src/cc-compat.h

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• Hash : 6c53d6ab
  Author :
  Date : 2021-09-08T18:42:42
  

  Use __typeof__ GNUC keyword for ISO C compatibility

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• src/cc-compat.h

• /*
   * Copyright (C) the libgit2 contributors. All rights reserved.
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  #ifndef INCLUDE_cc_compat_h__
  #define INCLUDE_cc_compat_h__
  
  #include <stdarg.h>
  
  /*
   * See if our compiler is known to support flexible array members.
   */
  #ifndef GIT_FLEX_ARRAY
  #	if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
  #		define GIT_FLEX_ARRAY /* empty */
  #	elif defined(__GNUC__)
  #		if (__GNUC__ >= 3)
  #			define GIT_FLEX_ARRAY /* empty */
  #		else
  #			define GIT_FLEX_ARRAY 0 /* older GNU extension */
  #		endif
  #	endif
  
  /* Default to safer but a bit wasteful traditional style */
  #	ifndef GIT_FLEX_ARRAY
  #		define GIT_FLEX_ARRAY 1
  #	endif
  #endif
  
  #if defined(__GNUC__)
  #	define GIT_ALIGN(x,size) x __attribute__ ((aligned(size)))
  #elif defined(_MSC_VER)
  #	define GIT_ALIGN(x,size) __declspec(align(size)) x
  #else
  #	define GIT_ALIGN(x,size) x
  #endif
  
  #if defined(__GNUC__)
  # define GIT_UNUSED(x)                                                         \
  	do {                                                                   \
  		__typeof__(x) _unused __attribute__((unused));                 \
  		_unused = (x);                                                 \
  	} while (0)
  #else
  # define GIT_UNUSED(x) ((void)(x))
  #endif
  
  /* Define the printf format specifier to use for size_t output */
  #if defined(_MSC_VER) || defined(__MINGW32__)
  
  /* Visual Studio 2012 and prior lack PRId64 entirely */
  #	ifndef PRId64
  #		define PRId64 "I64d"
  #	endif
  
  /* The first block is needed to avoid warnings on MingW amd64 */
  #	if (SIZE_MAX == ULLONG_MAX)
  #		define PRIuZ "I64u"
  #		define PRIxZ "I64x"
  #		define PRIXZ "I64X"
  #		define PRIdZ "I64d"
  #	else
  #		define PRIuZ "Iu"
  #		define PRIxZ "Ix"
  #		define PRIXZ "IX"
  #		define PRIdZ "Id"
  #	endif
  
  #else
  #	define PRIuZ "zu"
  #	define PRIxZ "zx"
  #	define PRIXZ "zX"
  #	define PRIdZ "zd"
  #endif
  
  /* Micosoft Visual C/C++ */
  #if defined(_MSC_VER)
  /* disable "deprecated function" warnings */
  #	pragma warning ( disable : 4996 )
  /* disable "conditional expression is constant" level 4 warnings */
  #	pragma warning ( disable : 4127 )
  #endif
  
  #if defined (_MSC_VER)
  	typedef unsigned char bool;
  #	ifndef true
  #		define true 1
  #	endif
  #	ifndef false
  #		define false 0
  #	endif
  #else
  #	include <stdbool.h>
  #endif
  
  #ifndef va_copy
  #	ifdef __va_copy
  #		define va_copy(dst, src) __va_copy(dst, src)
  #	else
  #		define va_copy(dst, src) ((dst) = (src))
  #	endif
  #endif
  
  #endif
  

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