[Octave-bug-tracker] [bug #35148] Error Msg suppressed: tic; sparse(1e5, 1e5, 0); toc

[Clem]

URL:
  <http://savannah.gnu.org/bugs/?35148>

                 Summary: Error Msg suppressed: tic; sparse(1e5, 1e5, 0); toc
                 Project: GNU Octave
            Submitted by: clemwang
            Submitted on: Wed 21 Dec 2011 08:10:33 PM GMT
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Other
                  Status: None
             Assigned to: None
         Originator Name: Clem
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.4.0
        Operating System: Mac OS

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Details:

This is a minor bug, but I wasted some time pointlessly trying to time a bad
sparse matrix creation without realizing it was in error.

I did:


>> tic; sparse(1e5, 1e5, 0); toc
Elapsed time is 0.000164986 seconds.



However, this is very missing leading since the sparse() call failed, but tic
and toc seem to have suppressed the error message.  Without tic and toc, I
see:


sparse(1e5, 1e5, 0)
error: memory exhausted or requested size too large for range of Octave's
index type -- trying to return to prompt
ans =

Compressed Column Sparse (rows = 100000, cols = 100000, nnz = 0>> 


(Note: a final LF is missing on this error, so the prompt follows the last 0
and there's a missing close paren too!)

At first, I thought this might be a generic STDERR problem, but no.  It's
specific to this particular error in sparse() and who knows what other errors.
 My guess is this error actually went to STDOUT instead of STDERR.

In these calls, tic and toc do not suppress errors:


>> tic; Inf/0 ; toc
warning: division by zero
Elapsed time is 0.000152 seconds.
>> tic; i2 = eye(2); i2(1i) ; toc
error: complex scalar type invalid as index value
>>tic; sparse(-1,-1,0) ; toc
error: sparse: subscript indices must be either positive integers or logicals
>> 






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