Re: pkg/60059: math/gnumeric 10.0_2025Q4 segfaults on RPi4

The following reply was made to PR pkg/60059; it has been noted by GNATS.

From: Ramiro Aceves <[email protected]>
To: [email protected], [email protected], [email protected],
 [email protected]
Cc: 
Subject: Re: pkg/60059: math/gnumeric 10.0_2025Q4 segfaults on RPi4
Date: Wed, 11 Mar 2026 22:11:03 +0100

 El 11/3/26 a las 20:30, Benny Siegert via gnats escribió:
 > The following reply was made to PR pkg/60059; it has been noted by GNATS.
 > 
 > From: Benny Siegert <[email protected]>
 > To: Ramiro Aceves <[email protected]>
 > Cc: [email protected], [email protected], [email protected],
 >      [email protected]
 > Subject: Re: pkg/60059: math/gnumeric 10.0_2025Q4 segfaults on RPi4
 > Date: Wed, 11 Mar 2026 19:28:46 +0000 (UTC)
 > 
 >   >>  Changing from "long double" to "double" inside
 >   >>  fmt-fp function in the file
 >   >>  /usr/pkgsrc/misc/goffice0.10/work/goffice-0.10.60/goffice/math
 >   >>  fixes de crash.
 >   >>
 >   >>  I do not know how to properly fix it only for aarch64 and if it is a
 >   >>  proper fix.
 >   
 >   Thanks, this is actually helpful! At the risk of being flamed to death, I
 >   used Gemini to explain the cause of the crash. It suggests that this is a
 >   pointer underflow specifically on aarch64, because the calculation of the
 >   array size in that function is wrong. It suggests this patch:
 >   
 >   --- go-dtoa.c
 >   +++ go-dtoa.c
 >   @@ -227,7 +227,7 @@
 >     	if (y) y *= 0x1p28, e2-=28;
 >   
 >     	if (e2<0) a=r=z=big;
 >   -	else a=r=z=big+sizeof(big)/sizeof(*big) - LDBL_MANT_DIG - 1;
 >   +	else a=r=z=big+sizeof(big)/sizeof(*big) - (LDBL_MANT_DIG+28)/9 - 1;
 >   
 >     	do {
 >     		*z = y;
 >   
 >   It also suggests that the code is lifted from musl libc :)
 >   
 >   Can you try recompiling goffice0.10 with this change?
 >   
 >   Thanks!
 >   
 >   --
 >   Benny
 >   
 
 Hi Benny, many thanks for you help. I have tried to apply the patch but it does not apply to pkgsrc-current go-dtoa.c file (I did upgrade to -current 
 just goffice and gnumeric directories to test as someone pointed out. What version of pkgsrc should I have prior to patch application? 2025Q4? Tell me 
 please and I will downgrade both directories and apply the patch (only one line change but I want to do it well)
 
 Thanks so much.