On 12/02/2009 10:39 AM, Andrew Stitcher wrote:
On Tue, 2009-12-01 at 16:34 -0500, Alan Conway wrote:
...I'm getting this core dump on exit from the cluster_tests in a cmake build:
#0 0x00000038e0075bb8 in malloc_consolidate () from /lib64/libc.so.6
#1 0x00000038e0078022 in _int_malloc () from /lib64/libc.so.6
#2 0x00000038e0079fe8 in calloc () from /lib64/libc.so.6
#3 0x00000031cee14463 in ?? () from /lib64/libnspr4.so
#4 0x00000031cee1aeff in ?? () from /lib64/libnspr4.so
#5 0x00000031cee2865d in PR_GetCurrentThread () from /lib64/libnspr4.so
#6 0x00000031cee1a397 in PR_SetError () from /lib64/libnspr4.so
#7 0x00000031cfa1863d in NSS_Shutdown () from /lib64/libnss3.so
#8 0x00007f5f94296689 in qpid::sys::ssl::shutdownNSS () at
/home/aconway/qpid/qpid/cpp/src/qpid/sys/ssl/util.cpp:115
#9 0x00007f5f934d5607 in qpid::client::(anonymous
namespace)::StaticInit::~StaticInit (this=0x38e0369e80, __in_chrg=<value
optimized out>) at
/home/aconway/qpid/qpid/cpp/src/qpid/client/SslConnector.cpp:163
#10 0x00000038e0036bc0 in __cxa_finalize () from /lib64/libc.so.6
#11 0x00007f5f934d5556 in __do_global_dtors_aux () from
/home/aconway/qpid/qpid/cmake/src/sslconnector.so
#12 0x0000000000000000 in ?? ()
This looks suspect to me, doing anything of any complexity in a static
destructor is dangerous, unless the NSS library specifically states that its
safe to shutdown this way.
I'd tend to agree - perhaps this should run on module unload - oh wait -
we don't have any way except static destruction to indicate module
unload.
That seems like something we should fix. How about requiring the user to declare
a QpidClient object at the start of main() which must stay in scope till end of
main() giving us a place to hang our global de-initialization? That would also
give us a place where the user could specify client configuration as an
alternative to relying exclusively on environment variables.
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