id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
9328,Error initializing a boost:container's allocator with a reference.,jbell@…,Ion Gaztañaga,"Consider the following:

struct arena;

struct A : std::allocator<int>
{
    A(arena {}
    A(arena*) {}
};

typedef boost::container::vector<int,boost::container::scoped_allocator_adaptor<A> > avector;

void foo(arena a)
{
    avector v1(a);      // error: can't bind a mutable & to a const&
    avector v2(&a);     // fine
    avector v3(A(a));   // fine
    avector v3(A(&a));  // fine
}

The initialization of v1 generates the following compilation error (under GCC 4.4.7):

/opt/scidb/13.9/3rdparty/boost/include/boost/container/scoped_allocator.hpp: In constructor ‘boost::container::container_detail::scoped_allocator_adaptor_base<OuterAlloc, true, boost::container::container_detail::nat, boost::container::container_detail::nat, boost::container::container_detail::nat, boost::container::container_detail::nat, boost::container::container_detail::nat, boost::container::container_detail::nat, boost::container::container_detail::nat, boost::container::container_detail::nat, boost::container::container_detail::nat, boost::container::container_detail::nat>::scoped_allocator_adaptor_base(const OuterA2&) [with OuterA2 = ARENA, OuterAlloc = A]’:
/opt/scidb/13.9/3rdparty/boost/include/boost/preprocessor/iteration/detail/local.hpp:34:   instantiated from ‘boost::container::scoped_allocator_adaptor<OuterAlloc, P0, P1, P2, P3, P4, P5, P6, P7, P8, P9>::scoped_allocator_adaptor(const OuterA2&) [with OuterA2 = ARENA, OuterAlloc = A, Q0 = boost::container::container_detail::nat, Q1 = boost::container::container_detail::nat, Q2 = boost::container::container_detail::nat, Q3 = boost::container::container_detail::nat, Q4 = boost::container::container_detail::nat, Q5 = boost::container::container_detail::nat, Q6 = boost::container::container_detail::nat, Q7 = boost::container::container_detail::nat, Q8 = boost::container::container_detail::nat, Q9 = boost::container::container_detail::nat]’
/local/mem/src/tests/unit/ArenaUnitTests.h:743:   instantiated from here
/opt/scidb/13.9/3rdparty/boost/include/boost/container/scoped_allocator.hpp:890: error: no matching function for call to ‘A::A(const ARENA&)’
/local/mem/src/tests/unit/ArenaUnitTests.h:736: note: candidates are: A::A(ARENA*)
/local/mem/src/tests/unit/ArenaUnitTests.h:735: note:                 A::A(ARENA&)
/local/mem/src/tests/unit/ArenaUnitTests.h:734: note:                 A::A(const A&)

Notice that the implementation of scoped_allocator_adaptor is attempting to initialize the adaptor with a *const* reference to an ARENA when a mutable reference was in fact supplied to the container's constructor. ",Bugs,closed,To Be Determined,container,Boost 1.54.0,Problem,wontfix,container scoped_allocator_adaptor,