Re: Segfault by wrong option -Efoo+

[ITO Tsuyoshi]

Hello,

From: ITO Tsuyoshi <address@hidden>
Date: Sat, 26 Jan 2002 17:27:04 +0900 (JST)
Message-Id: <address@hidden>

> I am using a2ps 4.13 on Solaris 2.6 run on Sparc machine.  When I
> invoked a2ps with a wrong -E (or equivalent --pretty-print) option
> which ended with ``+'', it failed with a segmentation fault.

I recompiled a2ps 4.13b and executed on GDB debugger.  Here is the
backtrace:

> GNU gdb 4.18
> Copyright 1998 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "sparc-sun-solaris2.6"...
> (gdb) r -Efoo+ /dev/null
> Starting program: /home2/users/tsuyoshi/usrlocal/a2ps-4.13b/bin/a2ps -Efoo+ 
> /dev/null
> a2ps: cannot find file `foo.ssh'
> a2ps: cannot find style sheet `foo': using plain style
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x21174 in style_sheet_mixed_new (ancestors=0x11bdb0 "foo+") at ssheet.c:765
> 765       cp = stpcpy (key, ancestor->key);
> (gdb) bt
> #0  0x21174 in style_sheet_mixed_new (ancestors=0x11bdb0 "foo+") at 
> ssheet.c:765
> #1  0x23308 in get_style_sheet (key=0x11bdb0 "foo+") at ssheet.c:1490
> #2  0x24f94 in print (filename=0xeffffa2a "/dev/null", 
> native_jobs=0xeffff874, 
>     delegated_jobs=0xeffff878) at generate.c:346
> #3  0x1d6dc in main (argc=3, argv=0xeffff8f4) at main.c:1165
> (gdb) print key
> $1 = 0xeffff238 ""
> (gdb) print ancestor
> $2 = (struct style_sheet *) 0x0

I hope this report will be a little help to make a2ps better, though
it is now useful enough.  :-)

Best regards,
-- ITO Tsuyoshi  <address@hidden> --
-- Department of Information Science           --
--                  in the University of Tokyo --

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