32-bit compilation

[miloyip]

When compiling the library on a 32-bit target, it generates this static assert.

../../thirdparty/json-voorhees/src/jsonv/value.cpp:356:5: error: static_assert
      failed "!!"
    static_assert(sizeof _data == sizeof _data.object, "!!");
    ^             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I am not sure if this library supports 32-bit architecture. It was compiled successfully on 64-bit in the same platform (OS X).

[neomantra]

I came upon this bug from using nativejson-benchmark (strangely hours after @miloyip 's push). I can duplicate this with 32-bit builds on Ubuntu Linux 14.04, gcc 4.8.2. It builds fine on 64-bit.

Simple steps to reproduce outside of nativejson-benchmark:

# I needed to do this first to find my boost installation,
# because I'm on a 64-bit system cross-compiling to 32-bit?
cmake .
# re-cmake with 32-bit settings
cmake -DCMAKE_CXX_FLAGS=-m32 -DCMAKE_C_FLAGS=-m32 .
make

I get the following errors and warning:

/home/nm/foo/json-voorhees/src/jsonv/value.cpp: In member function ‘void jsonv::value::swap(jsonv::value&)’:
/home/nm/foo/json-voorhees/src/jsonv/value.cpp:356:5: error: static assertion failed: !!
     static_assert(sizeof _data == sizeof _data.object, "!!");
     ^
/home/nm/foo/json-voorhees/src/jsonv/value.cpp: In member function ‘std::size_t std::hash<jsonv::value>::operator()(const jsonv::value&) const’:
/home/nm/foo/json-voorhees/src/jsonv/value.cpp:635:16: warning: large integer implicitly truncated to unsigned type [-Woverflow]
         return 0x51afb2fe9467d0f7ULL;
                ^
make[2]: *** [CMakeFiles/jsonv.dir/src/jsonv/value.cpp.o] Error 1
make[1]: *** [CMakeFiles/jsonv.dir/all] Error 2
make: *** [all] Error 2

Unrelated to 32-bit (maybe should be another issue)... When running the test suite in 64-bit builds, I get the following error. I'm running it without arguments from the base directory. From strace, I do see it is finding its first test numbers_coerce.json.

terminate called after throwing an instance of 'std::regex_error'
  what():  regex_error
Aborted (core dumped)

[tgockel]

Yeah, I can't say I have tested this on anything 32-bit. I'll look into fixing this sometime soon.