Thank you.
So https://trygnuapl.github.io has been updated to version 1.6 using
GNU APL 2.0 SVN 1980 with this patch backported.
On Sun, Apr 19, 2026 at 9:36 AM Dr. Jürgen Sauermann <
mail@jürgen-sauermann.de> wrote:
> Hi Roy,
>
> thanks for reporting this. I believe the bug may occur on platforms where
> ints are 32 bit and pointers are 64 bits so the upper 32 bits of the
> difference
> are ignored. Fixed in *SVN 1982*.
>
> Talking about running GNU APL on the public internet please consider
> the security chapter in the attached report from Claude Code. Even
> though it is correct that *⎕FIO* and friends are insecure, I believe that
> the (insecure) default is the proper choice for almost every normal
> user and that only GNU APL instances connected to the internet (like
> *trygnuapl*) should disable it.
>
> And many thanks to Blake McBride who had kindly pointed me at
> Claude Code.
>
> Best Regards,
> Jürgen
>
>
> On 4/19/26 17:46, Roy Tobin wrote:
>
> Hi, New code in GNU APL svn1946 of Jan 2026:
>
> /// compare function for bsearch()
> static int compare(const Value * const & key,
> const _val_par & B, const void *)
> {
> return int64_t(key) - int64_t(B._val);
> }
>
> Has a portability bug that manifests on some architectures. I found it
> when integrating post-svn1945 for trygnuapl.github.io. C/C++ coders may
> want to see if they can spot anything amiss.
>
> The bug hunt story, bug explanation, and my solution are here:
>
> https://gist.github.com/roytobin/7b06f28a4acc9fbca103168807e49535
>
>
>
>
