dimension mismatch in spdiags leads to core dump

[Jaroslav Hajek]

On Tue, Jun 16, 2009 at 3:07 AM, Elias Pipping<elias at pipping.org> wrote:
> --------
> Bug report for Octave 3.2.0 configured for x86_64-pc-linux-gnu
>
> Description:
> -----------
>
>  * I meant to write
>
>       n=200; e=ones(n,1); A=spdiags([e 4*e e], -1:1, n, n);
>
>    but instead wrote
>
>       n=200; e=ones(n,1); A=spdiags([e 4*e e], -1:1, n);
>
>    which led to the error
>
>      error: A(I,J,...) = X: dimensions mismatch
>      error: called from:
>      error:   /usr/share/octave/3.2.0/m/sparse/spdiags.m at line 71, column 29
>      error:   /usr/share/octave/3.2.0/m/sparse/spdiags.m at line 76, column 7
>
>    however, when running the same erroneous command again, I got
>
>      octave: symtab.h:1065: static void symbol_table::force_variable(const std::string&, int, size_t): Assertion `xcurrent_context == 0' failed.
>      panic: Aborted -- stopping myself...
>      attempting to save variables to `octave-core'...
>      save to `octave-core' complete
>      Aborted
>


Ugh, this was tricky.  The following patch fixes the problem for me:
http://hg.savannah.gnu.org/hgweb/octave/rev/5e4da3b3747e


thanks

-- 
RNDr. Jaroslav Hajek
computing expert & GNU Octave developer
Aeronautical Research and Test Institute (VZLU)
Prague, Czech Republic
url: www.highegg.matfyz.cz