[Assimp-discussions] compile errors in documents.h

[James W. <ja...@fr...>]

Hi, I'm new to Assimp, building with Xcode 4.6.3 for Mac.  When I build 
for 64 bits, all is well, but in 32 bits, there is a compile error 
(duplicate constructor) in documents.h.  The problem is with these 
constructors:

#if defined(__APPLE__)
     //! Constructor for unsigned long value.
     explicit GenericValue(unsigned long u64) RAPIDJSON_NOEXCEPT : 
data_(), flags_(kNumberUint64Flag) {
         data_.n.u64 = u64;
         if (!(u64 & RAPIDJSON_UINT64_C2(0x80000000, 0x00000000)))
             flags_ |= kInt64Flag;
         if (!(u64 & RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x00000000)))
             flags_ |= kUintFlag;
         if (!(u64 & RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x80000000)))
             flags_ |= kIntFlag;
     }

#if !defined(__x86_64__) && !defined(__arm64__)
     //! Constructor for size_t value.
     explicit GenericValue( size_t u ) RAPIDJSON_NOEXCEPT : data_(), 
flags_( kNumberUintFlag ) {
         data_.n.u64 = u;
         if ( !( u&0x80000000 ) )
             flags_ |= kIntFlag|kInt64Flag;
     }
#endif

The stddef.h header defines size_t is __typeof__(sizeof(int)), which 
turns out to be the same as unsigned long, so these two constructors are 
indeed handling the same type.  However, the first one seems to be 
assuming that it's a 64-bit value, which in this case it isn't.  So I'm 
guessing that the first conditional should be:

#if defined(__APPLE__) && defined(__x86_64__)

Once I fix that error, I get another...

contrib/rapidjson/include/rapidjson/document.h:1087:22: error: call to 
constructor of 'rapidjson::GenericValue<rapidjson::UTF8<char>, 
rapidjson::MemoryPoolAllocator<rapidjson::CrtAllocator> >' is ambiguous
         GenericValue v(value);
                      ^ ~~~~~

This one has me more befuddled.  When I look at the declaration of the 
rapidjson::UTF8 structure template, I see a bunch of static methods, but 
no actual data, and no way to convert it to integral types.  But the 
compiler says there are candidate constructors like GenericValue(int i). 
  Help?