Segmentation fault from struct2cell

Tue May 6 00:53:28 CDT 2008

Subject: Segmentation fault from struct2cell
--------
Bug report for Octave 3.0.0 configured for x86_64-unknown-linux-gnu

Description:
-----------

struct2cell dosn't handle structure arrays correctly if size != [ 1 1 ] and may segfault

Repeat-By:
---------
octave:1> s.i=42;
octave:2> assert(size(struct2cell([s,s])),[1 1 2])
error: assert (size (struct2cell ([s, s])),[1, 1, 2]) expected
   1   1   2
but got
   1   2
Dimensions don't match
error: called from `assert' in file `/usr/local/share/octave/3.0.0/m/testfun/assert.m'
octave:3> struct2cell([s,s;s,s])
panic: Segmentation fault -- stopping myself...
attempting to save variables to `octave-core'...
save to `octave-core' complete
Segmentation fault (core dumped)

Backtrace:
--------------
Core was generated by `octave'.
Program terminated with signal 11, Segmentation fault.
#0  0x00002b93de038b30 in octave_value::operator= (this=0x2222468, a=@0x7fffccf71780)
    at ./ov.h:274
274               if (--rep->count == 0)
(gdb) bt
#0  0x00002b93de038b30 in octave_value::operator= (this=0x2222468, a=@0x7fffccf71780)
    at ./ov.h:274
#1  0x00002b93de291c43 in Fstruct2cell (args=@0x22224e0) at ov-cell.cc:1153
#2  0x00002b93de2d3dc6 in octave_builtin::do_multi_index_op (this=0x16b48d0, nargout=0,
    args=@0x22224e0) at ov-builtin.cc:104
#3  0x00002b93de2d3fc7 in octave_builtin::subsref (this=0x16b48d0, type=@0x2221b68,
    idx=@0x7fffccf71b80, nargout=0) at ov-builtin.cc:54
#4  0x00002b93de2992f7 in octave_value::subsref (this=0x7fffccf71ba0, type=@0x2221b68,
    idx=@0x7fffccf71b80, nargout=0) at ov.cc:783
#5  0x00002b93de37b75f in tree_index_expression::rvalue (this=0x2221b30, nargout=0)
    at pt-idx.cc:352
#6  0x00002b93de395170 in tree_statement::eval (this=0x2222ba0, silent=false, nargout=0,
    in_function_body=false) at pt-stmt.cc:133
#7  0x00002b93de395400 in tree_statement_list::eval (this=0x2221ca0, silent=false, nargout=0)
    at pt-stmt.cc:190
#8  0x00002b93de23b8d8 in main_loop () at toplev.cc:225
#9  0x00002b93de1e1340 in octave_main (argc=1, argv=0x7fffccf722b8, embedded=0)
    at octave.cc:835
#10 0x0000000000400f48 in main (argc=1, argv=0x7fffccf722b8) at main.c:35
Current language:  auto; currently c++

Configuration (please do not edit this section):
-----------------------------------------------

uname output:     Linux inkfish 2.6.24-1-amd64 #1 SMP Mon Feb 11 13:47:43 UTC 2008 x86_64 GNU/Linux
configure opts:   'LDFLAGS=-L/usr/totalview/linux-x86-64/lib/' 'CFLAGS=-g' 'FFLAGS=-g' 'CXXFLAGS=-g'
Fortran compiler: g77
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F2C:              @F2C@
F2CFLAGS:         @F2CFLAGS@
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