Re: sed segfaults

[Stepan Kasal]

Hello Fred,

On Thu, Nov 06, 2003 at 12:09:50PM -0800, Fred Reiss wrote:
> When I run sed on the attached input file with the following command line:
> 
> sed -e 's/\'\''.*\'\''/foo/' input.txt
> 
> sed segfaults.  I assume it's not supposed to do that.
> 
> GNU sed version 4.0.5

thank you very much for your bug report.  I've verified the bug with 4.0.5,
which is the default on my Red Hat GNU/Linux system, this way:

$ echo xxx| sed "s/\'.*\'/foo/"
Segmentation fault

Then I tried sed-4.0.7, the current version.  It didn't segfault, but...

$ echo xxx| sed/sed "s/\'.*\'/foo/"
foo

Then I copied reg* source files from GNU libc CVS to the directory
sed-4.0.7/lib/ and did "make clean; make" to rebuild sed.  Then:

$ echo xxx| sed/sed "s/\'.*\'/foo/"
xxxfoo

Well, the efect of \' is undefined by POSIX, so sed is compliant as soon
as it doesn't segafult.  But the current behaviour is weird.

I'm sending cc of this mail to the sed maintainer: Paolo, can you look
at this issue?

Have a nice day,
        Stepan Kasal