Re: [bug-gawk] Segfault on invalid program

[arnold]

Hi.

Thanks for the bug report.  Someone reported this recently to the
bug list; my response is the same; gawk doesn't exit after diagnosing
the first syntax error in the hope that it can diagnose more than one.
This can lead to data structures becoming corrupted, and thus the
segfault.

I have thought of a way to avoid the segfault and will work on it.

Thanks,

Arnold

Steve Kemp <address@hidden> wrote:

>   A couple of years ago I went through a phase
>  of fuzz-testing gawk.
>
>   Having seen the recent announcement of GNU
>  awk 5.0 I gave it a go, but at least one issue
>  I reported to debian remains unfixed:
>
>     https://bugs.debian.org/816277
>
>   From the bug-report this is my sample program:
>
>     gawk -e "for (i = ) in foo bar baz"
>
>   Simple patch attached to the bug-report, though
>  it might not be the best.   I appreciate invalid
>  programs are invalid, but I think a segfault is 
>  something we should prevent.
>
> Steve
> --