Re: [Boost-users] strange fatal errors with Boost.Test

Subject: Re: [Boost-users] strange fatal errors with Boost.Test
From: Christoph Groth (cwg_at_[hidden])
Date: 2010-03-13 06:10:48

Gennadiy Rozental <rogeeff_at_[hidden]> writes:

> This makes no sense. Your test program does not refer to the itest facilities.
> There is single testing tool involved as well. Something seriously screwing up
> the stack.
>
> Can you try to go step by step in the debugger?

I did.  The stack gets corrupted when returning from
cfc::operator/<double, 2, int> at tiny_vector.hh:182.  The stack looks
fine and then gets corrupted after one gdb "step".  See attached gdb
session transmission.

I cannot imagine how this trivial function could corrupt the stack.  How
to debug this in more detail?  I tried

objdump -tD test_all >test_all.dis

but I cannot find in test_all.dis the addresses mentioned in the
traceback (e.g. 0x000000000047d43f)

> Can you also try build UTF as external library?

What would that help?  The error also appears when I link dynamically
against the library provided in Debian (only the backtrace is less
useful).

Thanks,
Christoph

The gdb backtrace:
################################################################

(gdb) br tiny_vector.hh:185
Breakpoint 1 at 0x47d56e: file tiny_vector.hh, line 185.
(gdb) run
Starting program: /tmp/lg-bug/test_all 
Running 1 test case...

Breakpoint 1, cfc::operator/<double, 2, int> (a=..., b=@0x7fffffffcd8c) at tiny_vector.hh:185
185         return a /= b;
(gdb) n
186     }
(gdb) p a
$1 = {x = {0.5, 0.5}}
(gdb) p b
$2 = (const int &) @0x7fffffffcd8c: 2
(gdb) bt
#0  cfc::operator/<double, 2, int> (a=..., b=@0x7fffffffcd8c) at tiny_vector.hh:186
#1  0x000000000047d43f in Glass (this=0x7fffffffcdc0, _size=..., _periodic=...) at glass.cc:5
#2  0x000000000041d50b in sq_dist::test_method (this=0x7fffffffce6f) at test_glass.cc:10
#3  0x000000000041d489 in sq_dist_invoker () at test_glass.cc:7
#4  0x0000000000474178 in boost::unit_test::ut_detail::invoker<boost::unit_test::ut_detail::unused>::invoke<void (*)()> (this=0x7fffffffcecf, f=@0x6d1a08)
    at /usr/include/boost/test/utils/callback.hpp:56
#5  0x000000000046fdf7 in boost::unit_test::ut_detail::callback0_impl_t<boost::unit_test::ut_detail::unused, void (*)()>::invoke (this=0x6d1a00)
    at /usr/include/boost/test/utils/callback.hpp:89
#6  0x0000000000439c85 in boost::unit_test::callback0<boost::unit_test::ut_detail::unused>::operator() (this=0x6d1ad0)
    at /usr/include/boost/test/utils/callback.hpp:118
#7  0x000000000042d161 in operator() (this=0x6d6378) at /usr/include/boost/test/impl/unit_test_monitor.ipp:41
#8  0x000000000042d144 in invoke<boost::unit_test::<unnamed>::zero_return_wrapper_t<boost::unit_test::callback0<boost::unit_test::ut_detail::unused> > > (
    this=0x7fffffffcf5f, f=...) at /usr/include/boost/test/utils/callback.hpp:42
#9  0x000000000042d125 in invoke (this=0x6d6370) at /usr/include/boost/test/utils/callback.hpp:89
#10 0x0000000000441769 in boost::unit_test::callback0<int>::operator() (this=0x7fffffffdb80) at /usr/include/boost/test/utils/callback.hpp:118
#11 0x0000000000439d84 in boost::detail::do_invoke<boost::scoped_ptr<boost::detail::translate_exception_base>, boost::unit_test::callback0<int> > (tr=..., 
    F=...) at /usr/include/boost/test/impl/execution_monitor.ipp:244
#12 0x000000000040d676 in boost::execution_monitor::catch_signals (this=0x6cfe80, F=...) at /usr/include/boost/test/impl/execution_monitor.ipp:956
#13 0x000000000040d73a in boost::execution_monitor::execute (this=0x6cfe80, F=...) at /usr/include/boost/test/impl/execution_monitor.ipp:1282
#14 0x000000000041740e in boost::unit_test::unit_test_monitor_t::execute_and_translate (this=0x6cfe80, tc=...)
    at /usr/include/boost/test/impl/unit_test_monitor.ipp:69
#15 0x000000000042f700 in boost::unit_test::framework_impl::visit (this=0x6cf4c0, tc=...) at /usr/include/boost/test/impl/framework.ipp:150
#16 0x000000000041baa7 in boost::unit_test::traverse_test_tree (tc=..., V=...) at /usr/include/boost/test/impl/unit_test_suite.ipp:193
#17 0x000000000041c01f in boost::unit_test::traverse_test_tree (id=65536, V=...) at /usr/include/boost/test/impl/unit_test_suite.ipp:232
#18 0x000000000041bc68 in boost::unit_test::traverse_test_tree (suite=..., V=...) at /usr/include/boost/test/impl/unit_test_suite.ipp:207
#19 0x000000000041c03c in boost::unit_test::traverse_test_tree (id=1, V=...) at /usr/include/boost/test/impl/unit_test_suite.ipp:234
#20 0x00000000004090a7 in boost::unit_test::framework::run (id=1, continue_test=true) at /usr/include/boost/test/impl/framework.ipp:436
#21 0x000000000041717c in boost::unit_test::unit_test_main (init_func=0x41d3f8 <init_unit_test_suite(int, char**)>, argc=1, argv=0x7fffffffe398)
    at /usr/include/boost/test/impl/unit_test_main.ipp:185
#22 0x0000000000417376 in main (argc=1, argv=0x7fffffffe398) at /usr/include/boost/test/impl/unit_test_main.ipp:237
(gdb) s
Glass (this=0x7fffffffcdc0, _size=..., _periodic=...) at glass.cc:7
7       }
(gdb) bt
#0  Glass (this=0x7fffffffcdc0, _size=..., _periodic=...) at glass.cc:7
#1  0x000000000041d50b in sq_dist::test_method (this=0x7fffffffce6f) at test_glass.cc:10
#2  0x0000000000410101 in boost::itest::expectations_logger::data_flow (this=Cannot access memory at address 0x3fdffffffffffe38
) at /usr/include/boost/test/impl/logged_expectations.ipp:188
Cannot access memory at address 0x3fe0000000000008