[Pkg-octave-devel] Bug#457541: octave2.9: multiple assignment to a struct array

[Francesco Potorti`]

Package: octave2.9
Version: 1:2.9.14-1
Severity: normal

octave> s=struct("a",{},"b",{},"c",{},"d",{});
octave> s(1).a=1;
octave> [s(1).b s(1).c s(1).d]=sscanf("2 3 4","%d %d %d","C");
octave> s(2).a=11;
octave> [s(2).b s(2).c s(2).d]=sscanf("12 13 14","%d %d %d","C");
error: some elements undefined in return list
error: evaluating assignment expression near line 42, column 25

This error does not happen with octave 2.1.73-13, which indeed does the
expected thing.

Octave 2.9.14-1 does something different, which in my opinion is an
error, and which is not easy for me to explain in words.  Just remove
the semicolons at the end of the statements and see for yourself.

-- System Information:
Debian Release: lenny/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'testing-proposed-updates')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.22-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=C, LC_CTYPE=it_IT at euro (charmap=ANSI_X3.4-1968) (ignored: LC_ALL set to C)
Shell: /bin/sh linked to /bin/bash

Versions of packages octave2.9 depends on:
ii  atlas3-base [liblapack 3.6.0-20.6        Automatically Tuned Linear Algebra
ii  lapack3 [liblapack.so. 3.0.20000531a-6.1 library of linear algebra routines
ii  libc6                  2.7-4             GNU C Library: Shared libraries
ii  libcurl3-gnutls        7.17.1-1          Multi-protocol file transfer libra
ii  libfftw3-3 [fftw3]     3.1.2-3           library for computing Fast Fourier
ii  libg2c0                1:3.4.6-6         Runtime library for GNU Fortran 77
ii  libgcc1                1:4.2.2-4         GCC support library
ii  libglpk0               4.24-1            linear programming kit with intege
ii  libhdf5-serial-1.6.5-0 1.6.5-5+b1        Hierarchical Data Format 5 (HDF5) 
ii  libncurses5            5.6+20071124-1    Shared libraries for terminal hand
ii  libpcre3               7.3-2             Perl 5 Compatible Regular Expressi
ii  libqhull5              2003.1-7          calculate convex hulls and related
ii  libreadline5           5.2-3             GNU readline and history libraries
ii  libstdc++6             4.2.2-4           The GNU Standard C++ Library v3
ii  libsuitesparse         3.0.0-7           collection of libraries for comput
ii  refblas3 [libblas.so.3 1.2-8             Basic Linear Algebra Subroutines 3
ii  texinfo                4.11.dfsg.1-2     Documentation system for on-line i
ii  zlib1g                 1:1.2.3.3.dfsg-7  compression library - runtime

Versions of packages octave2.9 recommends:
ii  gnuplot                       4.2.2-1    A command-line driven interactive 

-- no debconf information