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

[Hermann Peifer]

Thanks for taking care. Hermann


On 18/12/2022 16.20, arnold@skeeve.com wrote:
> Hi.
>
> I have updated README_d/README.macosx, mainly recommending the use of
> homebrew or macports. On Intel, I could not find a way to use the readline
> library, so I recommend configuring with --without-readline.
>
> The 5.1 configure apparently doesn't find the readline library, which
> is why that line is missing and why there's no problem with it.
>
> Thanks,
>
> Arnold
>
> Hermann Peifer <peifer@gmx.eu> wrote:
>
> > 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