id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
5846,Boost::Test: intermittent crash during testing,anonymous,Gennadiy Rozental,"Our tests spin up 64 threads and then exercise various objects. Upon thread exit, the thread prints a simple message (args.id is the internal thread number):

{{{
BOOST_MESSAGE( ""Thread "" << args.id << "" completed"" );
}}}

The problem is tough to reproduce, but I've got one under the debugger. It appears Boost::Test has missed a lock in execution_monitor.

We are compiling with both CXXFLAGS += -D_REENTRANT and LDLIBS += -lpthread. Boost::Test compilation page (http://www.boost.org/doc/libs/1_47_0/libs/test/doc/html/execution-monitor/compilation.html) does not specify any additional flags for multithreaded testing, and the FAQ (http://www.boost.org/doc/libs/1_47_0/libs/test/doc/html/faq.html) does not mention any special steps.

=== Console 1 ===
$ ./test/run_esapi_tests 
Running 30 test cases...
terminate called after throwing an instance of 'std::length_error'
  what():  basic_string::_S_create
[Program hangs here]

=== Console 2 ===
$ ps -a
  PID TTY          TIME CMD
14779 pts/0    00:00:01 run_esapi_tests
14846 pts/1    00:00:00 ps
$ gdb attach 14779
GNU gdb (GDB) 7.1-ubuntu
Copyright (C) 2010 Free Software Foundation, Inc.
...
Loaded symbols for /lib/libpthread.so.0
...
Loaded symbols for /lib/librt.so.1
__lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:136
136	../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: No such file or directory.
	in ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
(gdb) where
#0  __lll_lock_wait ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:136
#1  0x00007f24bdc595f4 in _L_lock_1024 () from /lib/libpthread.so.0
#2  0x00007f24bdc59457 in __pthread_mutex_lock (mutex=0x7f24be08d948)
    at pthread_mutex_lock.c:82
#3  0x00007f24bcb1155b in *__GI___dl_iterate_phdr (
    callback=0x7f24bcd81910 <_Unwind_IteratePhdrCallback>, data=0x80)
    at dl-iteratephdr.c:42
#4  0x00007f24bcd8263f in _Unwind_Find_FDE (pc=0x7f24bcd80b1d, 
    bases=0x7fffa8e28498)
    at ../../../src/libgcc/../gcc/unwind-dw2-fde-glibc.c:417
#5  0x00007f24bcd7fb93 in uw_frame_state_for (context=0x7fffa8e283f0, 
    fs=<value optimized out>) at ../../../src/libgcc/../gcc/unwind-dw2.c:1128
#6  0x00007f24bcd804a9 in uw_init_context_1 (context=0x7fffa8e283f0, 
    outer_cfa=0x7fffa8e28530, outer_ra=0x7f24bcf861c0)
    at ../../../src/libgcc/../gcc/unwind-dw2.c:1447
#7  0x00007f24bcd80b1e in _Unwind_RaiseException (exc=0x125a8a0)
    at ../../../src/libgcc/../gcc/unwind.inc:88
#8  0x00007f24bd2d4e31 in __cxa_throw (obj=<value optimized out>, tinfo=0x80, 
    dest=0) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:78
#9  0x00007f24bd9e755a in boost::execution_monitor::catch_signals (
    this=<value optimized out>, F=<value optimized out>)
    at ./boost/test/impl/execution_monitor.ipp:958
#10 0x00007f24bd9e759b in boost::execution_monitor::execute (
    this=0x7f24bdc4f8c0, F=...) at ./boost/test/impl/execution_monitor.ipp:1282
#11 0x00007f24bda01d8c in boost::unit_test::unit_test_monitor_t::execute_and_translate (this=0x7f24bdc4f8c0, tc=<value optimized out>)
    at ./boost/test/impl/unit_test_monitor.ipp:69
#12 0x00007f24bd9f2941 in boost::unit_test::framework_impl::visit (
    this=0x7f24bdc4f800, tc=<value optimized out>)
    at ./boost/test/impl/framework.ipp:150
#13 0x00007f24bda21763 in boost::unit_test::traverse_test_tree (suite=..., 
    V=...) at ./boost/test/impl/unit_test_suite.ipp:207
#14 0x00007f24bd9efc28 in boost::unit_test::framework::run (
    id=<value optimized out>, continue_test=16)
    at ./boost/test/impl/framework.ipp:436
#15 0x00007f24bd9fed43 in boost::unit_test::unit_test_main (
    init_func=<value optimized out>, argc=<value optimized out>, 
    argv=<value optimized out>) at ./boost/test/impl/unit_test_main.ipp:185
#16 0x000000000042e402 in main (argc=1, argv=0x7fffa8e295e8)
    at /usr/include/boost/test/unit_test.hpp:59
(gdb) 
",Bugs,closed,To Be Determined,test,Boost 1.40.0,Problem,wontfix,multithreaded crash execution_monitor,noloader@…