Can you try the attached patch? If it doesn't work, I'm out of ideas. If it works, we need to regression test on the other IA64 platforms, though.
No joy: bash-3.00$ c++ -g -I../../../ shared_ptr_test.cpp bash-3.00$ gdb a.out HP gdb 5.3.0 for HP Itanium (32 or 64 bit) and target HP-UX 11.2x. Copyright 1986 - 2001 Free Software Foundation, Inc. Hewlett-Packard Wildebeest 5.3.0 (based on GDB) is covered by the GNU General Public License. Type "show copying" to see the conditions to change it and/or distribute copies. Type "show warranty" for warranty/support. .. (gdb) run Starting program: /house/maddock/libs/smart_ptr/test/a.out warning: Load module /usr/local/lib/gcc/ia64-hp-hpux11.23/3.4.3/../../../libstdc ++.so has been stripped. Debugging information is not available. Program received signal SIGSEGV, Segmentation fault si_code: 1 - SEGV_MAPERR - Address not mapped to object. 0x40601e1 in boost::detail::atomic_decrement (pw=0x40014bd4) at sp_counted_base_gcc_ia64.hpp:52 warning: Compilation directory is not absolute; could result in incorrect behavi or. Please report to HP. 52 "p7"); (gdb) bt #0 0x40601e1 in boost::detail::atomic_decrement (pw=0x40014bd4) at sp_counted_base_gcc_ia64.hpp:52 #1 0x4060010 in boost::detail::sp_counted_base::release (this=0x40014bd0) at sp_counted_base_gcc_ia64.hpp:127 #2 0x405ff90 in boost::detail::shared_count::~shared_count (this=0x7ffff3e4) at shared_count.hpp:205 #3 0x4060310 in boost::shared_ptr<int>::~shared_ptr (this=0x7ffff3e0) at shared_ptr_test.cpp:61 #4 0x4064ef0 in void n_constructors::pc0_test<int> (p=0x0) at shared_ptr_test.cpp:141 #5 0x402e280:0 in n_constructors::pointer_constructor () at shared_ptr_test.cpp:146 #6 0x40441a0:0 in n_constructors::test () at shared_ptr_test.cpp:1141 #7 0x405f140:0 in main () at shared_ptr_test.cpp:3211 BTW you can try this out for yourself on the HP testdrive machine. John.