Hi!
I have tried your example with boost 1.33.1; gcc 4.0.1; in Mandrake 2006 and HP-UX 11.11; with and without threads, and it works. Have you tried to debug this test? If so, where is it hanging? I think that this bug is SuSE-specific, because I can't reproduce it on other unices. I run sample code with gdb and what is I see:
This GDB was configured as "i586-suse-linux"...Using host libthread_db library "/lib/tls/libthread_db.so.1". (gdb) run Starting program: /home/syomin/boost-test [Thread debugging using libthread_db enabled] [New Thread 1076168384 (LWP 11562)] [There I press Ctrl+C] Program received signal SIGINT, Interrupt. [Switching to Thread 1076168384 (LWP 11562)] 0xffffe410 in __kernel_vsyscall () (gdb) bt #0 0xffffe410 in __kernel_vsyscall () #1 0x4013028e in __lll_mutex_lock_wait () from /lib/tls/libpthread.so.0 #2 0x4012d040 in _L_mutex_lock_34 () from /lib/tls/libpthread.so.0 #3 0x4000ce90 in _dl_runtime_resolve () from /lib/ld-linux.so.2 #4 0x0804a7e7 in scoped_lock (this=0x804c5d4, m=@0x4024d8a0) at lwm_pthreads.hpp:73 #5 0x0804a7e7 in scoped_lock (this=0xbfffdeb0, m=@0x804c5d4) at lwm_pthreads.hpp:73 #6 0x0804a74d in boost::detail::sp_counted_base::release (this=0x804c5c8) at shared_count.hpp:141 #7 0x0804a565 in ~shared_count (this=0xbfffdf94) at shared_count.hpp:379 #8 0x0804a14f in ~shared_ptr (this=0xbfffdf90) at connection.hpp:62 #9 0x08049443 in ~connection (this=0xbfffdf90) at connection.hpp:134 #10 0x08049061 in main () at test.cc:16