[pkg-boost-devel] Bug#758892: boost/thread.hpp: compilation fails with clang for particular CPUs

[Andrey Gursky]

Package: boost1.55
Version: 1.55.0+dfsg-2
Severity: normal

Dear maintainer,

programs using boost thread fail to compile with clang for particular CPUs:

#include <boost/thread.hpp>
int main() { return 0; }

$ clang++-3.4 -march=corei7 -o test test.cpp -lboost_system
In file included from test.cpp:5:
In file included from /usr/include/boost/thread.hpp:17:
In file included from /usr/include/boost/thread/once.hpp:20:
In file included from /usr/include/boost/thread/pthread/once_atomic.hpp:20:
In file included from /usr/include/boost/atomic.hpp:12:
In file included from /usr/include/boost/atomic/atomic.hpp:17:
In file included from /usr/include/boost/atomic/detail/platform.hpp:22:
/usr/include/boost/atomic/detail/gcc-atomic.hpp:961:64: error: no
matching constructor for initialization of 'storage_type' (aka
'boost::atomics::detail::storage128_type')
    explicit base_atomic(value_type const& v) BOOST_NOEXCEPT : v_(0)
                                                               ^  ~
/usr/include/boost/atomic/detail/gcc-atomic.hpp:932:28: note:
candidate constructor (the implicit copy constructor) not viable: no
known conversion from 'int' to
      'const boost::atomics::detail::storage128_type' for 1st argument
struct BOOST_ALIGNMENT(16) storage128_type
                           ^
/usr/include/boost/atomic/detail/gcc-atomic.hpp:932:28: note:
candidate constructor (the implicit default constructor) not viable:
requires 0 arguments, but 1 was provided
/usr/include/boost/atomic/detail/gcc-atomic.hpp:968:22: error: no
viable conversion from 'int' to 'storage_type' (aka
'boost::atomics::detail::storage128_type')
        storage_type tmp = 0;
                     ^     ~
/usr/include/boost/atomic/detail/gcc-atomic.hpp:932:28: note:
candidate constructor (the implicit copy constructor) not viable: no
known conversion from 'int' to
      'const boost::atomics::detail::storage128_type &' for 1st argument
struct BOOST_ALIGNMENT(16) storage128_type
                           ^
/usr/include/boost/atomic/detail/gcc-atomic.hpp:983:22: error: no
viable conversion from 'int' to 'storage_type' (aka
'boost::atomics::detail::storage128_type')
        storage_type tmp = 0;
                     ^     ~
/usr/include/boost/atomic/detail/gcc-atomic.hpp:932:28: note:
candidate constructor (the implicit copy constructor) not viable: no
known conversion from 'int' to
      'const boost::atomics::detail::storage128_type &' for 1st argument
struct BOOST_ALIGNMENT(16) storage128_type
                           ^
/usr/include/boost/atomic/detail/gcc-atomic.hpp:997:22: error: no
viable conversion from 'int' to 'storage_type' (aka
'boost::atomics::detail::storage128_type')
        storage_type expected_s = 0, desired_s = 0;
                     ^            ~
/usr/include/boost/atomic/detail/gcc-atomic.hpp:932:28: note:
candidate constructor (the implicit copy constructor) not viable: no
known conversion from 'int' to
      'const boost::atomics::detail::storage128_type &' for 1st argument
struct BOOST_ALIGNMENT(16) storage128_type
                           ^
/usr/include/boost/atomic/detail/gcc-atomic.hpp:997:38: error: no
viable conversion from 'int' to 'storage_type' (aka
'boost::atomics::detail::storage128_type')
        storage_type expected_s = 0, desired_s = 0;
                                     ^           ~
/usr/include/boost/atomic/detail/gcc-atomic.hpp:932:28: note:
candidate constructor (the implicit copy constructor) not viable: no
known conversion from 'int' to
      'const boost::atomics::detail::storage128_type &' for 1st argument
struct BOOST_ALIGNMENT(16) storage128_type
                           ^
/usr/include/boost/atomic/detail/gcc-atomic.hpp:1013:22: error: no
viable conversion from 'int' to 'storage_type' (aka
'boost::atomics::detail::storage128_type')
        storage_type expected_s = 0, desired_s = 0;
                     ^            ~
/usr/include/boost/atomic/detail/gcc-atomic.hpp:932:28: note:
candidate constructor (the implicit copy constructor) not viable: no
known conversion from 'int' to
      'const boost::atomics::detail::storage128_type &' for 1st argument
struct BOOST_ALIGNMENT(16) storage128_type
                           ^
/usr/include/boost/atomic/detail/gcc-atomic.hpp:1013:38: error: no
viable conversion from 'int' to 'storage_type' (aka
'boost::atomics::detail::storage128_type')
        storage_type expected_s = 0, desired_s = 0;
                                     ^           ~
/usr/include/boost/atomic/detail/gcc-atomic.hpp:932:28: note:
candidate constructor (the implicit copy constructor) not viable: no
known conversion from 'int' to
      'const boost::atomics::detail::storage128_type &' for 1st argument
struct BOOST_ALIGNMENT(16) storage128_type
                           ^
7 errors generated.
$

This was reported in [1] and seems to be fixed 5 month ago by [2].
What do you think about adding this patch?

Thanks,
Andrey

[1] https://svn.boost.org/trac/boost/ticket/9610
[2] https://github.com/boostorg/atomic/commit/e04ffeb523edb6ac2c3f980878787a4112a4495c