* Rafael Laboissiere <raf...@debian.org> [2009-06-12 23:09]: > * John W. Eaton <j...@jweaton.org> [2009-06-12 13:20]: > > > On 11-Jun-2009, Rafael Laboissiere wrote: > > | (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 > > > > Can you move to this frame and examine the value of C? > > Breakpoint 2, octave_print_internal (o...@0x4328b0, c...@0x455cc8) at > pr-output.cc:1958 > 1958 pr_complex (os, c); > Current language: auto; currently c++ > (gdb) print c > $1 = (const Complex &) @0x455cc8: {_M_value = nan(0x7ffffffffffff) + > 2.2661800709135971 * I}
The real part should be Inf, not NaN, right? I discovered that the octave on mips also hungs for this : complex (NaN, 0) So, even if log2 returns a wrong value, the bug happens elsewhere. At any rate, the following works as expected: complex (NaN, NaN) complex (0, NaN) complex (NaN, Inf) I am puzzled with this problem and I cannot really debug it, since I am not versed in GDB. The bug arises at line 1442 of pr-output.cc, in function pr_complex(): pr_imag_float (os, i, i_fw); -- Rafael -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org