git.sur5r.net Git - cc65/blob - src/common/va_copy.h

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                 va_copy.h                                 */
   4 /*                                                                           */
   5 /*               va_copy macro for systems that don't have it                */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2004      Ullrich von Bassewitz                                       */
  10 /*               Römerstrasse 52                                             */
  11 /*               D-70794 Filderstadt                                         */
  12 /* EMail:        uz@cc65.org                                                 */
  13 /*                                                                           */
  14 /*                                                                           */
  15 /* This software is provided 'as-is', without any expressed or implied       */
  16 /* warranty.  In no event will the authors be held liable for any damages    */
  17 /* arising from the use of this software.                                    */
  18 /*                                                                           */
  19 /* Permission is granted to anyone to use this software for any purpose,     */
  20 /* including commercial applications, and to alter it and redistribute it    */
  21 /* freely, subject to the following restrictions:                            */
  22 /*                                                                           */
  23 /* 1. The origin of this software must not be misrepresented; you must not   */
  24 /*    claim that you wrote the original software. If you use this software   */
  25 /*    in a product, an acknowledgment in the product documentation would be  */
  26 /*    appreciated but is not required.                                       */
  27 /* 2. Altered source versions must be plainly marked as such, and must not   */
  28 /*    be misrepresented as being the original software.                      */
  29 /* 3. This notice may not be removed or altered from any source              */
  30 /*    distribution.                                                          */
  31 /*                                                                           */
  32 /*****************************************************************************/
  33
  34
  35
  36 #ifndef VA_COPY_H
  37 #define VA_COPY_H
  38
  39
  40
  41 /* No action if we're using a C99 compiler */
  42 #if (__STDC_VERSION__ < 199901)
  43
  44
  45
  46 /* va_copy is not allowed to be defined */
  47 #if defined(va_copy)
  48 #error "The compiler is broken!"
  49 #endif
  50
  51 /* The watcom compiler doesn't have va_copy and a problematic va_list definition */
  52 #if defined(__WATCOMC__)
  53 #define va_copy(dest,src)       memcpy((dest), (src), sizeof (va_list))
  54 #endif
  55
  56 /* GNU C has a builtin function */
  57 #if defined(__GNUC__)
  58 #define va_copy(dest,src)       __va_copy(dest, src)
  59 #endif
  60
  61 /* If we don't have va_copy now, use a generic version */
  62 #if !defined(va_copy)
  63 #define va_copy(dest,src)       ((src)=(dest))
  64 #endif
  65
  66
  67
  68 #endif  /* #if (__STDC_VERSION__ < 199901) */
  69
  70
  71
  72 /* End of va_copy.h */
  73 #endif
  74
  75
  76