On Wed, Jan 30, 2008 at 01:41:15PM +0000, Martin Fisher wrote:
Using the boost_1_35_0 svn library download and Visual C++ 2008 Express
edition.
Originally compiled as a CLR program. Recompiling using native Win32
still gives a crash during program termination - in
atomic_count_win32.hpp in operator-- (BOOST_INTERLOCKED_DECREMENT)
Unhandled exception at 0x010752b9 in fly2.exe: 0xC0000005: Access
violation writing location 0x00779040.
There is indeed a bug somewhere. I could reproduce it on Linux which
doesn't suffer from CLR/libc/... mess. I just compiled it (code from
trunk) and it crashes. valgrind reports:
==25155== Invalid read of size 4
==25155== at 0x8049678: boost::detail::atomic_count::atomic_exchange_and_add(int*, int) (atomic_count_gcc_x86.hpp:74)
==25155== by 0x80496A2: boost::detail::atomic_count::operator--() (atomic_count_gcc_x86.hpp:42)
==25155== by 0x8049835: boost::flyweights::detail::refcounted_valuestd::string::release() const (refcounted.hpp:61)
==25155== by 0x804BEF6: boost::flyweights::detail::refcounted_handlestd::string const*, boost::flyweights::detail::flyweight_core_tracking_helper, boost::flyweights::simple_locking, boost::flyweights::static_holder> >::~refcounted_handle() (refcounted.hpp:91)
==25155== by 0x804BF20: boost::flyweights::flyweight::~flyweight() (flyweight.hpp:64)
==25155== by 0x804BF34: void std::_Destroy >(boost::flyweights::flyweight*) (stl_construct.h:107)
==25155== by 0x804BF4A: void std::__destroy_aux*>(boost::flyweights::flyweight*, boost::flyweights::flyweight*, std::__false_type) (stl_construct.h:122)
==25155== by 0x804BF79: void std::_Destroy*>(boost::flyweights::flyweight*, boost::flyweights::flyweight*) (stl_construct.h:155)
==25155== by 0x804BF93: void std::_Destroy*, boost::flyweights::flyweight >(boost::flyweights::flyweight*, boost::flyweights::flyweight*, std::allocator >) (stl_construct.h:182)
==25155== by 0x804BFD4: std::vector, std::allocator > >::~vector() (stl_vector.h:268)
==25155== by 0x80492B1: __tcf_2 (test.cpp:12)
==25155== by 0x4870F13: exit (in /lib/i686/cmov/libc-2.7.so)
==25155== Address 0x6fd1374 is not stack'd, malloc'd or (recently) free'd
==25155==
==25155== Invalid read of size 4
==25155== at 0x8049678: boost::detail::atomic_count::atomic_exchange_and_add(int*, int) (atomic_count_gcc_x86.hpp:74)
==25155== by 0x80496C0: boost::detail::atomic_count::operator long() const (atomic_count_gcc_x86.hpp:47)
==25155== by 0x8049BD3: boost::flyweights::detail::refcounted_valuestd::string::count() const (refcounted.hpp:59)
==25155== by 0x804BABA: boost::flyweights::detail::refcounted_handlestd::string const*,
[snip]
Jens
