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Date:      Thu, 21 Oct 2021 07:40:36 -0700
From:      Mark Millard via freebsd-current <freebsd-current@freebsd.org>
To:        gljennjohn@gmail.com
Cc:        freebsd-current <freebsd-current@freebsd.org>
Subject:   Re: Is dialog4ports built in/for releng/13.0 also supposed to work under main [so: 14]? It gets SIGSEGV in my context.
Message-ID:  <DAAA6F08-521B-4764-BCF7-73828B4DF593@yahoo.com>
In-Reply-To: <20211021151438.7496a0d0@ernst.home>
References:  <0465422C-DA30-4421-85E7-17CACBF0356D.ref@yahoo.com> <0465422C-DA30-4421-85E7-17CACBF0356D@yahoo.com> <20211021151438.7496a0d0@ernst.home>

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On 2021-Oct-21, at 06:14, Gary Jennejohn <gljennjohn@gmail.com> wrote:

> On Thu, 21 Oct 2021 01:34:47 -0700
> Mark Millard via freebsd-current <freebsd-current@freebsd.org> wrote:
>=20
>> I get the following crash (amd64 example shown), as reported
>> via gdb afterwards. (devel/llvm13 is just an example context.)
>>=20
>> gdb `which dialog4ports` devel/llvm13/dialog4ports.core
>> . . .
>> Core was generated by `/usr/local/bin/dialog4ports'.
>> Program terminated with signal SIGSEGV, Segmentation fault.
>> Address not mapped to object.
>> #0  vfprintf_l (fp=3D0x4d4940, locale=3D0x8004d4128 =
<__xlocale_global_locale>, fmt0=3D0x201f64 "\"%s\"", =
ap=3Dap@entry=3D0x7fffffffcf00) at =
/usr/main-src/lib/libc/stdio/vfprintf.c:281
>> 281		if ((fp->_flags & (__SNBF|__SWR|__SRW)) =3D=3D =
(__SNBF|__SWR) &&
>> (gdb) bt
>> #0  vfprintf_l (fp=3D0x4d4940, locale=3D0x8004d4128 =
<__xlocale_global_locale>, fmt0=3D0x201f64 "\"%s\"", =
ap=3Dap@entry=3D0x7fffffffcf00) at =
/usr/main-src/lib/libc/stdio/vfprintf.c:281
>> #1  0x0000000800409283 in fprintf (fp=3D0x800411660 =
<__stdio_cancel_cleanup>, fmt=3D0x7fffffffcdd0 "0\317\377\377\377\177") =
at /usr/main-src/lib/libc/stdio/fprintf.c:57
>> #2  0x000000000020399d in main (argc=3D<optimized out>, =
argv=3D<optimized out>) at dialog4ports.c:332
>> (gdb) quit
>>=20
>> The crash happens after selecting OK but not after selecting Cancel. =
The
>> display is also odd before that (no line drawing, just odd text =
instead),
>> but is sufficient to be usable at that stage.
>>=20
>=20
> This is an indication that something is missing in dialog4ports which
> is required by FBSD-14 but not FBSD-13.  I had a similar problem with
> dialog4ports under FBSD-14 some weeks ago, because i had a really old
> version installed.  After upgrading it using the pkg repositories for
> FBSD-14 all problems, in particular garbled text, disappeared.
>=20
> IIRC there were updates to ncurses in FBSD-14 fairly recently which
> would explain the problem with old versions of dialog4ports.

I do (and did) my own port builds with poudriere-devel. See the
version of ports below. In summary: my dialog4ports is=20
based on 4116dc2f of ports (CommitDate: 2021-10-17 21:52:37 +0000).

However it was deliberately built in/for a releng/13.0 based
context then also used under main [so:14].

For ports not requiring kernel vintage matching, newer systems
versions generally allow running software built for older FreeBSD
systems (going back a fair distance, anyway). dialog4ports does
not appear to require kernel vintage matching. I do not install
any ports requiring kernel vintage matching.

>> I've not had any other of the ports that I built in/for releng/13.0
>> (and have used) fail to operate under main [so: under 14]. (But the
>> variety used is not wide.)
>>=20
>> For reference . . .=20
>>=20
>> # uname -apKU
>> FreeBSD amd64_ZFS 14.0-CURRENT FreeBSD 14.0-CURRENT #3 =
main-n249978-032448cd2c52-dirty: Fri Oct  8 23:57:23 PDT 2021     =
root@amd64_ZFS:/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.a=
md64/sys/GENERIC-NODBG  amd64 amd64 1400036 1400036
>>=20
>> (Not a debug build but has debug symbols enabled.)
>>=20
>> # pwd
>> /usr/ports
>> # ~/fbsd-based-on-what-commit.sh=20
>> branch: main
>> merge-base: 4116dc2f1f6385b42fb668badb6b4c1cbb195f9d
>> merge-base: CommitDate: 2021-10-17 21:52:37 +0000
>> 4116dc2f1f63 (HEAD -> main, freebsd/main, freebsd/HEAD) =
ports-mgmt/poudriere-devel: Update to 3.3.0-1022-g964cf327f
>> n562472 (--first-parent --count for merge-base)

The above indicates the vintage of ports that my dialog4ports
build is based on (in detail): Not all that old at this point.

>> # file `which dialog4ports`
>> /usr/local/bin/dialog4ports: ELF 64-bit LSB executable, x86-64, =
version 1 (FreeBSD), dynamically linked, interpreter =
/libexec/ld-elf.so.1, for FreeBSD 13.0 (1300139), FreeBSD-style, with =
debug_info, not stripped
>>=20
>> # ldd `which dialog4ports`
>> /usr/local/bin/dialog4ports:
>> 	libncursesw.so.9 =3D> /lib/libncursesw.so.9 (0x800248000)
>> 	libm.so.5 =3D> /lib/libm.so.5 (0x800281000)
>> 	libdialog.so.9 =3D> /usr/lib/libdialog.so.9 (0x8002b8000)
>> 	libc.so.7 =3D> /lib/libc.so.7 (0x8002f6000)
>> 	libtinfow.so.9 =3D> /lib/libtinfow.so.9 (0x800703000)
>>=20
>> Note: The dialog4ports is a non-debug build but with debug symbols,
>> as is normal for my port builds via poudriere-devel .
>>=20
>> As for the poudriere-devel build context for the ports:
>>=20
>> # chroot /usr/obj/DESTDIRs/13_0R-amd64-poud/
>> # uname -apKU
>> FreeBSD amd64_ZFS 14.0-CURRENT FreeBSD 14.0-CURRENT #3 =
main-n249978-032448cd2c52-dirty: Fri Oct  8 23:57:23 PDT 2021     =
root@amd64_ZFS:/usr/obj/BUILDs/main-amd64-nodbg-clang/usr/main-src/amd64.a=
md64/sys/GENERIC-NODBG  amd64 amd64 1400036 1300139
>>=20
>> # cd /usr/13_0R-src/
>> # ~/fbsd-based-on-what-commit.sh=20
>> branch: releng/13.0
>> merge-base: 940681634ee17d12225ecd722c07fef1a0bde813
>> merge-base: CommitDate: 2021-08-24 18:23:29 +0000
>> 940681634ee1 (HEAD -> releng/13.0, freebsd/releng/13.0) Add UPDATING =
entries and bump version.
>> n244760 (--first-parent --count for merge-base)
>=20
>=20
>=20

=3D=3D=3D
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)




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