Re: make check hangs at chol.cc

[Kai Habel]

-------- Original-Nachricht --------
> Datum: Mon, 23 Mar 2009 20:27:46 -0400
> Von: "John W. Eaton" <address@hidden>
> An: Kai Habel <address@hidden>
> CC: octave maintainers mailing list <address@hidden>
> Betreff: make check hangs at chol.cc

> On 19-Mar-2009, Kai Habel wrote:
> 
> | Hello all,
> | with the current tip make check hangs at chol.cc. WhenI interrupt it
> | with ctrl+C I see the message:
> | "chol: unexpected second or third input". The fntest.log does not
> | contain any useful information about the reason. Any ideas?
> | 
> | Kai
> | 
> | address@hidden:~/hg-octave/octave> make check
> | make -f octMakefile check
> | make[1]: Entering directory `/home/kai/hg-octave/octave'
> | make -C test check
> | make[2]: Entering directory `/home/kai/hg-octave/octave/test'
> | ../run-octave --norc --silent --no-history ./fntests.m .
> | 
> | Integrated test scripts:
> | 
> |   src/DLD-FUNCTIONS/besselj.cc ........................... PASS  180/180
> |   src/DLD-FUNCTIONS/betainc.cc ........................... PASS    6/6
> |   src/DLD-FUNCTIONS/bsxfun.cc ............................ PASS   55/55
> |   src/DLD-FUNCTIONS/cellfun.cc ........................... PASS   74/74
> |   src/DLD-FUNCTIONS/chol.cc ..............................^Cchol:
> | unexpected second or third input
> | 
> | 
> | fntest.log:
> | >>>>> processing
> | # >>>>>  new test file
> | # ?????  no tests in file
> | # !!!!!  test had an unexpected result
> | #   *****  code for the test
> | # Search for the unexpected results in the file
> | # then page back to find the file name which caused it.
> | # The result may be an unexpected failure (in which
> | # case an error will be reported) or an unexpected
> | # success (in which case no error will be reported).
> | >>>>> processing /home/kai/hg-octave/octave/src/DLD-FUNCTIONS/besselj.cc
> | >>>>> processing /home/kai/hg-octave/octave/src/DLD-FUNCTIONS/betainc.cc
> | >>>>> processing /home/kai/hg-octave/octave/src/DLD-FUNCTIONS/bsxfun.cc
> | >>>>> processing /home/kai/hg-octave/octave/src/DLD-FUNCTIONS/cellfun.cc
> | >>>>> processing /home/kai/hg-octave/octave/src/DLD-FUNCTIONS/chol.cc
> | 
> 
> I don't see this problem.
> 
> To debug it on your system, I suggest you try extracting the test code
> from chol.cc and running it directly in Octave under gdb.  Then when
> it hangs, you can interrupt Octave to see where it is stuck.  If it is
> in an infinite loop, you may have to step or continue and stop
> multiple times to see where the loop is happening.
> 
> jwe

O.k. I could isolate the problem a bit. After running the inv command octave 
hangs. 

[New Thread 0xb53ed950 (LWP 1087)]
octave:1> inv([1 1 1;1 1 1.2;1 1.05 1])
^C                                     
Program received signal SIGINT, Interrupt.
[Switching to Thread 0xb53ed950 (LWP 1087)]
0xb68b4bbc in address@hidden () from /usr/local/lib/octave-3.1.54+/liboctave.so
Current language:  auto; currently asm
(gdb) bt
#0  0xb68b4bbc in address@hidden () from 
/usr/local/lib/octave-3.1.54+/liboctave.so
#1  0xb716e5b1 in dlamc1_ () from /usr/local/lib/octave-3.1.54+/liboctave.so
#2  0xb716dd8a in dlamc2_ () from /usr/local/lib/octave-3.1.54+/liboctave.so
#3  0xb716e665 in dlamch_ () from /usr/local/lib/octave-3.1.54+/liboctave.so
#4  0xb6126d30 in dgetf2_ () from /usr/lib/liblapack.so.3
#5  0xb612721c in dgetrf_ () from /usr/lib/liblapack.so.3
#6  0xb6c7008a in Matrix::finverse () from 
/usr/local/lib/octave-3.1.54+/liboctave.so
#7  0xb6c73730 in Matrix::inverse () from 
/usr/local/lib/octave-3.1.54+/liboctave.so
#8  0xb32a30cc in Finv () from 
/usr/local/libexec/octave/3.1.54+/oct/i686-pc-linux-gnu/inv.oct
#9  0xb78f7914 in octave_builtin::do_multi_index_op () from 
/usr/local/lib/octave-3.1.54+/liboctinterp.so
#10 0xb78f728f in octave_builtin::subsref () from 
/usr/local/lib/octave-3.1.54+/liboctinterp.so
#11 0xb78a8a18 in octave_value::subsref () from 
/usr/local/lib/octave-3.1.54+/liboctinterp.so
#12 0xb7a3ca99 in tree_index_expression::rvalue () from 
/usr/local/lib/octave-3.1.54+/liboctinterp.so
#13 0xb7a3a2a4 in tree_index_expression::rvalue1 () from 
/usr/local/lib/octave-3.1.54+/liboctinterp.so
#14 0xb7a2f8a1 in tree_evaluator::visit_statement () from 
/usr/local/lib/octave-3.1.54+/liboctinterp.so
#15 0xb7a5305b in tree_statement::accept () from 
/usr/local/lib/octave-3.1.54+/liboctinterp.so
#16 0xb7a2b50b in tree_evaluator::visit_statement_list () from 
/usr/local/lib/octave-3.1.54+/liboctinterp.so
#17 0xb7a5307b in tree_statement_list::accept () from 
/usr/local/lib/octave-3.1.54+/liboctinterp.so
#18 0xb77dfb2e in main_loop () from 
/usr/local/lib/octave-3.1.54+/liboctinterp.so
#19 0xb7772505 in octave_main () from 
/usr/local/lib/octave-3.1.54+/liboctinterp.so
#20 0x0804877a in main ()

Does this help and is more information needed?

Kai