Description of problem:

When attempting to read a particular file (attached) gnumeric
produces segmentation fault.  Here a backtrace from x86:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1208088896 (LWP 6916)]
0x00e16c79 in excel_read_IMDATA ()
   from /usr/lib/gnumeric/1.4.1/plugins/excel/excel.so
(gdb) bt
#0  0x00e16c79 in excel_read_IMDATA ()
   from /usr/lib/gnumeric/1.4.1/plugins/excel/excel.so
#1  0x00e16e6d in excel_read_IMDATA ()
   from /usr/lib/gnumeric/1.4.1/plugins/excel/excel.so
#2  0x00e1e3e1 in excel_read_workbook ()
   from /usr/lib/gnumeric/1.4.1/plugins/excel/excel.so
#3  0x00e0ad60 in excel_file_open ()
   from /usr/lib/gnumeric/1.4.1/plugins/excel/excel.so
#4  0x080f18b3 in plugin_service_plugin_loader_generate_type ()
#5  0x08141cdf in wb_view_new_from_input ()
#6  0x08141fa3 in wb_view_new_from_uri ()
#7  0x0815e6d3 in main ()

and the same one from x86_64

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 182894222272 (LWP 18914)]
0x0000002a96066191 in excel_read_IMDATA ()
   from /usr/lib64/gnumeric/1.4.1/plugins/excel/excel.so
(gdb) bt
#0  0x0000002a96066191 in excel_read_IMDATA ()
   from /usr/lib64/gnumeric/1.4.1/plugins/excel/excel.so
#1  0x0000002a9606639c in excel_read_IMDATA ()
   from /usr/lib64/gnumeric/1.4.1/plugins/excel/excel.so
#2  0x0000002a9606d13c in excel_read_workbook ()
   from /usr/lib64/gnumeric/1.4.1/plugins/excel/excel.so
#3  0x0000002a9605b094 in excel_file_open ()
   from /usr/lib64/gnumeric/1.4.1/plugins/excel/excel.so
#4  0x00000000004bbf42 in plugin_service_plugin_loader_generate_type ()
#5  0x000000000050d41b in wb_view_new_from_input ()
#6  0x000000000050d6b5 in wb_view_new_from_uri ()
#7  0x0000000000528269 in main ()

This is nearly sure a corrupted file.  It was produced by an
older version of gnumeric when I was trying to provide an info
about bug #137692.  Still SIGSEGV does not look like the right
reaction.  I checked with oocalc too.  It opens from that file
a blank spreadsheet, which is not that useful, but at least
it does not crash.

Version-Release number of selected component (if applicable):
gnumeric-1.4.1-1

How reproducible:
100%