[RFC] 12658_thread.cc randomly fails (on MP machines)

[Benjamin Kosnik]

>>I cannot reproduce the fail here, or on machines I have access to.
>>  
>>
>Which architectures? You need a multiprocessor machine, but otherwise is 
>pretty
>easy to reproduce! Have a look to testresults, there are many reported 
>fails on x86_64
>and ia64, for instance.

I don't see these on x86 and ppc. I do see some ia64 results from HJ,
and some reports from various SuSE folk and others.

I'll try to hop on an ia64 and see.

>Program received signal SIGSEGV, Segmentation fault.
>[Switching to Thread 1107294560 (LWP 19895)]
>0x0000002a95bf9474 in _nl_remove_locale () from /lib64/tls/libc.so.6
>(gdb) backtrace
>#0  0x0000002a95bf9474 in _nl_remove_locale () from /lib64/tls/libc.so.6
>#1  0x0000002a95bfacf5 in freelocale () from /lib64/tls/libc.so.6
>#2  0x0000002a95816801 in ~messages (this=Variable "this" is not 
>available.) at messages_members.h:69
>#3  0x0000002a957d4516 in std::locale::facet::_M_remove_reference 
>(this=Variable "this" is not available.) at locale_classes.h:411
>#4  0x0000002a957d4769 in ~_Impl (this=Variable "this" is not available.)
>    at /usr/src/paolo/gcc-head/gcc/libstdc++-v3/src/locale.cc:213
>#5  0x0000002a957d51bd in ~locale (this=Variable "this" is not 
>available.) at locale_classes.h:516
>#6  0x0000000000401303 in thread_main () at 12658_thread.cc:50
>#7  0x0000002a956738e2 in start_thread () from /lib64/tls/libpthread.so.0
>#8  0x0000002a95c8b0a3 in thread_start () from /lib64/tls/libc.so.6

...

>Program received signal SIGSEGV, Segmentation fault.
>[Switching to Thread 1084225888 (LWP 21185)]
>0x0000002a95bfc784 in _nl_find_locale () from /lib64/tls/libc.so.6
>(gdb) backtrace
>#0  0x0000002a95bfc784 in _nl_find_locale () from /lib64/tls/libc.so.6
>#1  0x0000002a95bfd7e0 in newlocale () from /lib64/tls/libc.so.6
>#2  0x0000002a95830bbe in std::locale::facet::_S_create_c_locale 
>(__cloc=@0x409ff630, __s=0x0,
>    __old=0xffffffffffffffff) at c++locale.cc:99
>#3  0x0000002a957d94a6 in _Impl (this=0x2a96005cc0, __s=0x40155c "en_US",
>    __refs=18446744073709551615)
>    at /usr/src/paolo/gcc-3_4-branch/gcc/libstdc++-v3/src/localename.cc:189
>#4  0x0000002a957da6ed in locale (this=0x409ff750, __s=0x40155c "en_US")
>    at /usr/src/paolo/gcc-3_4-branch/gcc/libstdc++-v3/src/localename.cc:46
>#5  0x000000000040102d in thread_main () at 12658_thread.cc:40
>#6  0x0000002a956738e2 in start_thread () from /lib64/tls/libpthread.so.0
>#7  0x0000002a95c8e0a3 in thread_start () from /lib64/tls/libc.so.6

ok, I'll start with these...

-benjamin