* John W. Eaton <j...@octave.org> [2009-06-11 15:42]:
> Did you compile the simpler program with the same options used to
> build Octave?
Probably not.
> Can you run Octave under gdb and find where it hangs, either by
> running
>
> log2 (complex (0, inf))
>
> and interrupting it when the hang happens and getting a stack trace,
> or by stepping through the log2 function (and the functions it calls)
> to find where it hangs?
When I run it through "./run-octave -g", the command above does not hang,
but gives immediately this, even when I set a breakpoint at log2:
octave:1> log2 (complex (0, inf))
Program received signal SIGBUS, Bus error.
[Switching to Thread 0x2aad4d80 (LWP 11231)]
0x2e17ae24 in std::num_put<char, std::ostreambuf_iterator<char,
std::char_traits<char> > >::_M_insert_float<double> () from
/usr/lib/libstdc++.so.6
Here is the stack:
(gdb) bt
#0 0x2e17ae24 in std::num_put<char, std::ostreambuf_iterator<char,
std::char_traits<char> > >::_M_insert_float<double> () from
/usr/lib/libstdc++.so.6
#1 0x2e17b048 in std::num_put<char, std::ostreambuf_iterator<char,
std::char_traits<char> > >::do_put () from /usr/lib/libstdc++.so.6
#2 0x2e18fd44 in std::ostream::_M_insert<double> () from
/usr/lib/libstdc++.so.6
#3 0x2b04e65c in operator<< (o...@0x4328b0, pff=<value optimized out>)
at /usr/include/c++/4.3/ostream:214
#4 0x2b054160 in pr_any_float (fmt=0x2bac0d40, o...@0x4328b0,
d=2.2661800709135971, fw=0)
at pr-output.cc:1394
#5 0x2b055ca4 in pr_complex (o...@0x4328b0, c=<value optimized out>,
r_fw=<value optimized out>, i_fw=0, scale=<value optimized out>) at
pr-output.cc:1412
#6 0x2b057a98 in octave_print_internal (o...@0x4328b0, c...@0x455cc8) at
pr-output.cc:1958
#7 0x2b17d504 in octave_base_scalar<std::complex<double> >::print
(this=0x2e1fcd60,
o...@0x20, pr_as_read_syntax=<value optimized out>) at ov-base-scalar.cc:121
#8 0x2b114d14 in octave_base_value::print_with_name (this=0x455cc0,
output_b...@0x4328b0,
name=<value optimized out>, print_padding=true) at ov-base.cc:358
#9 0x2b0d1450 in bind_ans (v...@0x7faa61a8, print=true) at ov.h:961
#10 0x2b36a1a0 in tree_evaluator::visit_statement (this=0x2bac17dc,
stmt=<value optimized out>) at pt-eval.cc:698
#11 0x2b366174 in tree_evaluator::visit_statement_list (this=0x2bac17dc,
l...@0x595ca0)
at pt-eval.cc:731
#12 0x2b0bba84 in main_loop () at toplev.cc:570
#13 0x2b02bd1c in octave_main (argc=6, argv=0x7faa6544, embedded=0) at
octave.cc:878
#14 0x2e266bac in __libc_start_main () from /lib/libc.so.6
#15 0x004009e8 in _ftext ()
--
Rafael
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