id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
2354,Serialization of STL collections fails on 64-bit Linux platforms,igodard@…,Robert Ramey,"In boost 1.35 on Linux on x86-64 an attempt to serialize any of the STL collections produces multiple definitions of ""implementation_level<long int>"". Eventually I tracked these to the int64_t handling in collection_traits.hpp, where the following code appears:

    // determine if its necessary to handle (u)int64_t specifically
    // i.e. that its not a synonym for (unsigned) long
    // if there is no 64 bit int or if its the same as a long
    // we shouldn't define separate functions for int64 data types.
    #if defined(BOOST_NO_INT64_T) \
        || (ULONG_MAX != 0xffffffff && ULONG_MAX == 18446744073709551615u) // 2**64 - 1
    #   define BOOST_NO_INTRINSIC_INT64_T
    #endif

The bug is that the lengthy constant is just ""u"", and so will be compiler-truncated to unsigned int, 4 bytes on this platform, and so will fail to be equal to the 8-byte ULONG_MAX. Changing the ""u"" to ""ul"" fixes the bug.",Bugs,closed,Boost 1.37.0,serialization,Boost 1.36.0,Problem,fixed,,