[liblouis-liblouisxml] Re: Segmentation fault with liblouis svn
- From: "John J. Boyer" <johnjboyer@xxxxxxxxxxxxx>
- To: liblouis-liblouisxml@xxxxxxxxxxxxx
- Date: Thu, 11 Nov 2010 08:43:43 -0600
I get this error also. I'll have a fix sshortly.
John
On Thu, Nov 11, 2010 at 03:14:10PM +0100, Christian Egli wrote:
> Hi all
>
> I seem to have hit a bug with the latest liblouis from svn (revision
> 420).
>
> When I run 'make check' the table check for many tables fails, many more
> than previously. And indeed when I invoke lou_checktable from the
> command line it tells me:
>
> eglic@saadawi:~/src/liblouis$ ./tools/lou_checktable tables/uni-text.dis
> Segmentation fault
>
> If I try to debug this with gdb I get the following:
>
> eglic@saadawi:~/src/liblouis-gnulib-update$ libtool --mode=execute gdb
> tools/lou_checktable
> GNU gdb (GDB) 7.1-ubuntu
> Copyright (C) 2010 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law. Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "i486-linux-gnu".
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>...
> Reading symbols from
> /home/eglic/src/liblouis-gnulib-update/tools/.libs/lt-lou_checktable...done.
> (gdb) run tables/uni-text.dis
> Starting program:
> /home/eglic/src/liblouis-gnulib-update/tools/.libs/lt-lou_checktable
> tables/uni-text.dis
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x00134804 in putCharAndDots (nested=<value optimized out>, c=0, d=32968) at
> compileTranslationTable.c:908
> 908 while (oldcdPtr->next)
> (gdb) bt
> #0 0x00134804 in putCharAndDots (nested=<value optimized out>, c=0, d=32968)
> at compileTranslationTable.c:908
> #1 0x00138aec in compileRule (nested=<value optimized out>) at
> compileTranslationTable.c:3546
> #2 0x0013763f in compileFile (fileName=0xbfffee3c "uni-text.dis") at
> compileTranslationTable.c:3611
> #3 0x00139f7d in compileTranslationTable (tl=<value optimized out>) at
> compileTranslationTable.c:3786
> #4 0x0013a649 in getTable (tableList=<value optimized out>) at
> compileTranslationTable.c:3883
> #5 0x0013a9db in lou_getTable (tableList=0xbffff5a2 "tables/uni-text.dis")
> at compileTranslationTable.c:3931
> #6 0x08048c03 in main (argc=2, argv=0xbffff3d4) at lou_checktable.c:111
> (gdb) print oldcdPtr
> $1 = <value optimized out>
> (gdb) print oldcdPtr->next
> Cannot access memory at address 0x0
> (gdb) print cdPtr
> $2 = <value optimized out>
> (gdb) print c
> $3 = 0
> (gdb) print d
> $4 = 32968
>
> Could it be that oldcdPtr is NULL? Have there been any changes to the
> putCharAndDots function lately? Does any of this ring a bell?
>
> Thanks
> Christian
>
> --
> Christian Egli
> Swiss Library for the Blind, Visually Impaired and Print Disabled
> Grubenstrasse 12, CH-8045 Zürich, Switzerland
>
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