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Subject: Re: ANNOUNCE: DJGPP port of GNU Gawk 4.2.0 uploaded.
From: "rugxulo AT gmail DOT com [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
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Hi,

On Sunday, October 22, 2017 at 11:16:10 AM UTC-5, Juan Manuel Guerrero (juan DOT guerrero AT gmx DOT hates DOT spam) [via djgpp-announce AT delorie DOT hates DOT spam] wrote:
>
> This is a port of GNU Gawk 4.2.0 to MSDOS/DJGPP.
> 
>    Send Gawk specific bug reports to <bug-gawk AT gnu DOT hates DOT spam>.
>    Send suggestions and bug reports concerning the DJGPP port
>    to comp.os.msdos.djgpp or <djgpp AT delorie DOT hates DOT spam>.

I'm not fluent in AWK at all. In fact, my use of it is very fleeting,
mainly out of curiosity. But GAWK does have a very good manual.

I was converting PSR Invaders (MASM syntax) to various other host
assemblers with scripts. Most of my scripts were using sed (Cheap
or GNU), but I did write one AWK script, too.

* http://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/distributions/1.2/repos/pkg-html/psrinvad.html
* http://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/distributions/1.2/repos/games/psrinvad.zip

I've still been playing around locally, making minor improvements, but
it seems latest DJGPP GAWK crashes (while older 4.1.1 works fine, same
as other DOS AWKs). I even did a quick rebuild of GAWK on Linux, but no
bug was found. So I assume this is a DJGPP-specific bug / regression.

At first I thought it was my new script, that maybe I was doing something
weird. But no, even my old script (in .ZIP mentioned at above URL)
is borking.

****************************************************************
[ GCC 7.2.0 / DJGPP 2.05 ] G:\TONY>gawk -f inv-a86.awk invaders.asm
Assertion failed at field.c line 350, function purge_record: (fields_arr[i]->fla
gs & MALLOC) == 0 ? fields_arr[i]->valref == 1 : true
Exiting due to signal SIGABRT
Raised at eip=0008609c
eax=0014c3f0 ebx=00000120 ecx=00000000 edx=00000000 esi=00154054 edi=0017c778
ebp=0014c4a8 esp=0014c3e0 program=C:\C\DJGPP\BIN\GAWK.EXE
cs: sel=00a7  base=00400000  limit=001cffff
ds: sel=00af  base=00400000  limit=001cffff
es: sel=00af  base=00400000  limit=001cffff
fs: sel=008f  base=00007490  limit=0000ffff
gs: sel=00bf  base=00000000  limit=0010ffff
ss: sel=00af  base=00400000  limit=001cffff
App stack: [0014c6a0..000cc6a4]  Exceptn stack: [000cbdc0..000c9e80]

Call frame traceback EIPs:
  0x00085feb
  0x0008609c
  0x00073dfa
  0x0001f9bd
[ GCC 7.2.0 / DJGPP 2.05 ] G:\TONY>gawk --version | sed 1q
GNU Awk 4.2.0
****************************************************************

I think the (valid!) line that is choking is this, but I don't know why:

/NewInt9Hand.* PROC/,/NotIntercept:/ { if ($0 ~ /MOV/) { sub($2,"cs:&") } }

So whatever. Just reporting this in case you know what to do with it.
It's no biggie to me, obviously. I almost hated to mention it, but ....