Re: [Boost-users] [Boost.Array] gcc 4.1.2 vs. boost alignment

Robert Mecklenburg napisał(a):

int main(int , char **) { boost::array barray; std::cout << sizeof(barray) << std::endl; std::tr1::array tr1array; std::cout << sizeof(tr1array) << std::endl; }

When run this code produces:

g++ foo.cpp && ./a.out 6 16

That is, the boost array is exactly the size I require 6 bytes, but the tr1 array is larger, 16 bytes.

the array is fine, just check the size() and use data(). implementation details are not our business. $ cat test.cpp #include #include #include <cstdio> int main() { boost::array< char, 6 > barray; std::printf( "barray size = %Zd, raw ptr = %p\n", barray.size(), barray.data() ); std::tr1::array< char, 6 > tr1array; std::printf( "tr1array size = %Zd, raw ptr = %p\n", tr1array.size(), tr1array.data() ); return 0; } $ ./test barray size = 6, raw ptr = 0x7fffffd038c0 tr1array size = 6, raw ptr = 0x7fffffd038b0 -- to_be || !to_be == 1, to_be | ~to_be == -1