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Changeset 46689 in vbox for trunk/include/iprt


Ignore:
Timestamp:
Jun 19, 2013 7:55:58 PM (11 years ago)
Author:
vboxsync
Message:

iprt/assert.h: VisualAge for C++ doesn't like using RT_OFFSETOF or typdefs either, just like GCC, so make this a little easier to select.

File:
1 edited

Legend:

Unmodified
Added
Removed

  • trunk/include/iprt/assert.h

    r43363 r46689  
    298298#ifdef __GNUC__
    299299# define AssertCompileNS(expr)  extern int RTASSERTVAR[1] __attribute__((unused)), RTASSERTVAR[(expr) ? 1 : 0] __attribute__((unused))
     300#elif defined(__IBMC__) || defined(__IBMCPP__)
     301# define AssertCompileNS(expr)  extern int RTASSERTVAR[(expr) ? 1 : 0]
    300302#else
    301303# define AssertCompileNS(expr)  typedef int RTASSERTTYPE[(expr) ? 1 : 0]
    … …  
    312314# define AssertCompile(expr)    AssertCompileNS(expr)
    313315#endif
     316
     317/** @def RTASSERT_OFFSET_OF()
     318 * A offsetof() macro suitable for compile time assertions.
     319 * Both GCC v4 and VisualAge for C++ v3.08 has trouble using RT_OFFSETOF.
     320 */
     321#if defined(__GNUC__)
     322# if __GNUC__ >= 4
     323#  define RTASSERT_OFFSET_OF(a_Type, a_Member)  __builtin_offsetof(a_Type, a_Member)
     324# else
     325#  define RTASSERT_OFFSET_OF(a_Type, a_Member)  RT_OFFSETOF(a_Type, a_Member)
     326# endif
     327#elif (defined(__IBMC__) || defined(__IBMCPP__)) && defined(RT_OS_OS2)
     328# define RTASSERT_OFFSET_OF(a_Type, a_Member)   __offsetof(a_Type, a_Member)
     329#else
     330# define RTASSERT_OFFSET_OF(a_Type, a_Member)   RT_OFFSETOF(a_Type, a_Member)
     331#endif
     332
    314333
    315334/** @def AssertCompileSize
    … …  
    353372 * @param   align   The member offset alignment to assert.
    354373 */
    355 #if defined(__GNUC__)
    356 # if __GNUC__ >= 4
    357 #  define AssertCompileMemberAlignment(type, member, align) \
    358     AssertCompile(!(__builtin_offsetof(type, member) & ((align) - 1)))
    359 # else
    360 #  define AssertCompileMemberAlignment(type, member, align) \
    361     AssertCompile(!(RT_OFFSETOF(type, member) & ((align) - 1)))
    362 # endif
    363 #else
    364 # define AssertCompileMemberAlignment(type, member, align) \
    365     AssertCompile(!(RT_OFFSETOF(type, member) & ((align) - 1)))
    366 #endif
     374#define AssertCompileMemberAlignment(type, member, align) \
     375    AssertCompile(!(RTASSERT_OFFSET_OF(type, member) & ((align) - 1)))
    367376
    368377/** @def AssertCompileMemberOffset
    … …  
    372381 * @param   off     The expected offset.
    373382 */
    374 #if defined(__GNUC__)
    375 # if __GNUC__ >= 4
    376 #  define AssertCompileMemberOffset(type, member, off) \
    377     AssertCompile(__builtin_offsetof(type, member) == (off))
    378 # else
    379 #  define AssertCompileMemberOffset(type, member, off) \
    380     AssertCompile(RT_OFFSETOF(type, member) == (off))
    381 # endif
    382 #else
    383 # define AssertCompileMemberOffset(type, member, off) \
    384     AssertCompile(RT_OFFSETOF(type, member) == (off))
    385 #endif
     383#define AssertCompileMemberOffset(type, member, off) \
     384    AssertCompile(RTASSERT_OFFSET_OF(type, member) == (off))
    386385
    387386/** @def AssertCompile2MemberOffsets
    … …  
    391390 * @param   member2 The second member.
    392391 */
    393 #if defined(__GNUC__)
    394 # if __GNUC__ >= 4
    395 #  define AssertCompile2MemberOffsets(type, member1, member2) \
    396     AssertCompile(__builtin_offsetof(type, member1) == __builtin_offsetof(type, member2))
    397 # else
    398 #  define AssertCompile2MemberOffsets(type, member1, member2) \
    399     AssertCompile(RT_OFFSETOF(type, member1) == RT_OFFSETOF(type, member2))
    400 # endif
    401 #else
    402 # define AssertCompile2MemberOffsets(type, member1, member2) \
    403     AssertCompile(RT_OFFSETOF(type, member1) == RT_OFFSETOF(type, member2))
    404 #endif
     392#define AssertCompile2MemberOffsets(type, member1, member2) \
     393    AssertCompile(RTASSERT_OFFSET_OF(type, member1) == RTASSERT_OFFSET_OF(type, member2))
    405394
    406395/** @def AssertCompileAdjacentMembers
    … …  
    410399 * @param   member2 The second member.
    411400 */
    412 #if defined(__GNUC__)
    413 # if __GNUC__ >= 4
    414 #  define AssertCompileAdjacentMembers(type, member1, member2) \
    415     AssertCompile(__builtin_offsetof(type, member1) + RT_SIZEOFMEMB(type, member1) == __builtin_offsetof(type, member2))
    416 # else
    417 #  define AssertCompileAdjacentMembers(type, member1, member2) \
    418     AssertCompile(RT_OFFSETOF(type, member1) + RT_SIZEOFMEMB(type, member1) == RT_OFFSETOF(type, member2))
    419 # endif
    420 #else
    421 # define AssertCompileAdjacentMembers(type, member1, member2) \
    422     AssertCompile(RT_OFFSETOF(type, member1) + RT_SIZEOFMEMB(type, member1) == RT_OFFSETOF(type, member2))
    423 #endif
     401#define AssertCompileAdjacentMembers(type, member1, member2) \
     402    AssertCompile(RTASSERT_OFFSET_OF(type, member1) + RT_SIZEOFMEMB(type, member1) == RTASSERT_OFFSET_OF(type, member2))
    424403
    425404/** @def AssertCompileMembersAtSameOffset
    … …  
    430409 * @param   member2 The second member.
    431410 */
    432 #if defined(__GNUC__)
    433 # if __GNUC__ >= 4
    434 #  define AssertCompileMembersAtSameOffset(type1, member1, type2, member2) \
    435     AssertCompile(__builtin_offsetof(type1, member1) == __builtin_offsetof(type2, member2))
    436 # else
    437 #  define AssertCompileMembersAtSameOffset(type1, member1, type2, member2) \
    438     AssertCompile(RT_OFFSETOF(type1, member1) == RT_OFFSETOF(type2, member2))
    439 # endif
    440 #else
    441 # define AssertCompileMembersAtSameOffset(type1, member1, type2, member2) \
    442     AssertCompile(RT_OFFSETOF(type1, member1) == RT_OFFSETOF(type2, member2))
    443 #endif
    444 
     411#define AssertCompileMembersAtSameOffset(type1, member1, type2, member2) \
     412    AssertCompile(RTASSERT_OFFSET_OF(type1, member1) == RTASSERT_OFFSET_OF(type2, member2))
     413 
    445414/** @def AssertCompileMembersSameSize
    446415 * Asserts that members of two different structures have the same size.
    … …  
    461430 * @param   member2 The second member.
    462431 */
    463 #if defined(__GNUC__)
    464 # if __GNUC__ >= 4
    465 #  define AssertCompileMembersSameSizeAndOffset(type1, member1, type2, member2) \
    466     AssertCompile(__builtin_offsetof(type1, member1) == __builtin_offsetof(type2, member2) && RT_SIZEOFMEMB(type1, member1) == RT_SIZEOFMEMB(type2, member2))
    467 # else
    468 #  define AssertCompileMembersSameSizeAndOffset(type1, member1, type2, member2) \
    469     AssertCompile(RT_OFFSETOF(type1, member1) == RT_OFFSETOF(type2, member2) && RT_SIZEOFMEMB(type1, member1) == RT_SIZEOFMEMB(type2, member2))
    470 # endif
    471 #else
    472 # define AssertCompileMembersSameSizeAndOffset(type1, member1, type2, member2) \
    473     AssertCompile(RT_OFFSETOF(type1, member1) == RT_OFFSETOF(type2, member2) && RT_SIZEOFMEMB(type1, member1) == RT_SIZEOFMEMB(type2, member2))
    474 #endif
     432#define AssertCompileMembersSameSizeAndOffset(type1, member1, type2, member2) \
     433    AssertCompile(   RTASSERT_OFFSET_OF(type1, member1) == RTASSERT_OFFSET_OF(type2, member2) \
     434                  && RT_SIZEOFMEMB(type1, member1) == RT_SIZEOFMEMB(type2, member2))
    475435
    476436/** @} */
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