Re: Fatal error after pressing [Enter] at the debug prompt

[Hermann Peifer]

Thanks for taking care.

Indeed, the error does not occur when using gawk-5.2.1 from homebrew.

Some more observations below, in case this information would help. As
mentioned, the "--with-readline" fix works fine with me.

Regards, Hermann

The fatal error does not occur when compiling from gawk-5.0.1 sources.
However, this version does not generate a .gawk_history file

The error appears from version 5.1.0 onwards. It's config.log has this
line which I don't see in version 5.0.1:
#define HAVE_LIBREADLINE 1

Version 5.1.0 generates a history file, which looks a bit different than
the usual one:
[gawk-5.1.0]> cat .gawk_history
_HiStOrY_V2_
w\040x
w\040y\040
w\040z
r
n
n
q


On 15/12/2022 05.13, arnold@skeeve.com wrote:
> Hi.
>
> Thanks for the report. I see the same thing on the GCC Compile Farm's M1.
> There's not a lot I can do about it, except mention it in the README.macosx
> file.  I would like to think that the Homebrew people take care of this for
> their version, so that it's not a problem for most people.
>
> FWIW, the same thing happens on Intel systems. But I don't have
> /opt/homebrew there, not sure what the right solution is other than
> to configure without readline.
>
> Thanks,
>
> Arnold
>
> Hermann Peifer <peifer@gmx.eu> wrote:
>
> > Hi again,
> >
> > Here an observation while using Gawk's debugger (in my local git
> > sandbox, on my M1 Macbook). More info below.
> >
> > Regards, Hermann
> >
> > ========================
> >
> > Configuration Information [Automatically generated, do not change]:
> > Machine: aarch64
> > OS: darwin21.6.0
> > Compiler: gcc
> > Compilation CFLAGS: -g -O2 -DNDEBUG
> > uname output: Darwin hal.local 21.6.0 Darwin Kernel Version 21.6.0: Mon
> > Aug 22 20:20:05 PDT 2022; root:xnu-8020.140.49~2
> > Machine Type: aarch64-apple-darwin21.6.0
> >
> > Gawk Version: 5.2.60
> >
> > Attestation 1:
> >       I have read
> > https://www.gnu.org/software/gawk/manual/html_node/Bugs.html.
> >       Yes
> >
> > Attestation 2:
> >       I have not modified the sources before building gawk.
> >       True
> >
> > Description:
> >       Simply pressing [Enter] at the debug prompt generates a fatal error.
> >
> > Repeat-By: Simply pressing [Enter] at the debug prompt
> >   > ./gawk -D -f test/hello.awk
> > gawk>
> > gawk: fatal error: internal error
> > Abort trap: 6
> >
> > Fix:
> >       The error goes away when configuring like this:
> > ./configure --with-readline=/opt/homebrew/opt/readline