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Bug#1042018: marked as done (qt6-declarative: FTBFS on hppa - Segmentation fault in /usr/lib/qt6/bin/qsb)

Your message dated Tue, 26 Sep 2023 21:47:57 +0200
with message-id <38547206.10thIPus4b@treadstone-71>
and subject line 
has caused the Debian Bug report #1042018,
regarding qt6-declarative: FTBFS on hppa - Segmentation fault in /usr/lib/qt6/bin/qsb
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
1042018: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1042018
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Source: qt6-declarative
Version: 6.4.2+dfsg-3
Severity: serious
Tags: ftbfs
Justification: fails to build from source (but built successfully in the past)

Dear Maintainer,

Build fails here:
[22/6600] cd /<<PKGBUILDDIR>>/obj-hppa-linux-gnu/src/quick && /usr/lib/qt6/bin/qsb --glsl 100es,120,150 --hlsl 50 --msl 12 -b -O -s -o /<<PKGBUILDDIR>>/obj-hppa-linux-gnu/src/quick/.qsb/scenegraph/shaders_ng/24bittextmask.frag.qsb /<<PKGBUILDDIR>>/src/quick/scenegraph/shaders_ng/24bittextmask.frag
FAILED: src/quick/.qsb/scenegraph/shaders_ng/24bittextmask.frag.qsb /<<PKGBUILDDIR>>/obj-hppa-linux-gnu/src/quick/.qsb/scenegraph/shaders_ng/24bittextmask.frag.qsb 
cd /<<PKGBUILDDIR>>/obj-hppa-linux-gnu/src/quick && /usr/lib/qt6/bin/qsb --glsl 100es,120,150 --hlsl 50 --msl 12 -b -O -s -o /<<PKGBUILDDIR>>/obj-hppa-linux-gnu/src/quick/.qsb/scenegraph/shaders_ng/24bittextmask.frag.qsb /<<PKGBUILDDIR>>/src/quick/scenegraph/shaders_ng/24bittextmask.frag
Segmentation fault (core dumped)

See:
https://buildd.debian.org/status/fetch.php?pkg=qt6-declarative&arch=hppa&ver=6.4.2%2Bdfsg-3&stamp=1690289443&raw=0

dave@mx3210:~/debian/qt6-declarative/qt6-declarative-6.4.2+dfsg/obj-hppa-linux-g
nu/src/quick$ gdb /usr/lib/qt6/bin/qsb
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There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "hppa-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
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Reading symbols from /usr/lib/qt6/bin/qsb...
Reading symbols from /usr/lib/debug/.build-id/2d/3c434ee4acf266d2dc6fd1ff1289e07e4fd07c.debug...
(gdb) set args --glsl 100es,120,150 --hlsl 50 --msl 12 -b -O -s -o /home/dave/debian/qt6-declarative/qt6-declarative-6.4.2+dfsg/obj-hppa-linux-gnu/src/quick/.qsb/scenegraph/shaders_ng/24bittextmask.frag.qsb /home/dave/debian/qt6-declarative/qt6-declarative-6.4.2+dfsg/src/quick/scenegraph/shaders_ng/24bittextmask.frag
(gdb) r
Starting program: /usr/lib/qt6/bin/qsb --glsl 100es,120,150 --hlsl 50 --msl 12 -b -O -s -o /home/dave/debian/qt6-declarative/qt6-declarative-6.4.2+dfsg/obj-hppa-linux-gnu/src/quick/.qsb/scenegraph/shaders_ng/24bittextmask.frag.qsb /home/dave/debian/qt6-declarative/qt6-declarative-6.4.2+dfsg/src/quick/scenegraph/shaders_ng/24bittextmask.frag
warning: Unable to find libthread_db matching inferior's thread library, thread debugging will not be available.
[Detaching after vfork from child process 24823]

Program received signal SIGSEGV, Segmentation fault.
0xf8af656c in vforkfd (flags=1,
    childFn=0xf8aec7d4 <QProcessPrivate::startProcess()::{lambda(void*)#1}::_FUN(void*) [clone .lto_priv.0]>, token=0xf8f02888, ppid=0xf8f028f0)
    at ./src/corelib/io/../../3rdparty/forkfd/forkfd.c:815
815     ./src/corelib/io/../../3rdparty/forkfd/forkfd.c: No such file or directory.
(gdb) bt
#0  0xf8af656c in vforkfd (flags=1,
    childFn=0xf8aec7d4 <QProcessPrivate::startProcess()::{lambda(void*)#1}::_FUN(void*) [clone .lto_priv.0]>, token=0xf8f02888, ppid=0xf8f028f0)
    at ./src/corelib/io/../../3rdparty/forkfd/forkfd.c:815
#1  QProcessPrivate::startProcess (this=0x91c80)
    at ./src/corelib/io/qprocess_unix.cpp:472
#2  QProcessPrivate::start (this=0x91c80, mode=...)
    at ./src/corelib/io/qprocess.cpp:2163
#3  0x0001bc20 in runProcess (binary=..., arguments=..., output=0xf8f02888,
    errorOutput=0x5112) at /usr/include/hppa-linux-gnu/qt6/QtCore/qflags.h:74
#4  0x00016884 in main (argc=<optimized out>, argv=<optimized out>)
    at ./tools/qsb/qsb.cpp:661
(gdb) disass $pc-16,$pc+16
Dump of assembler code from 0xf8af655c to 0xf8af657c:
   0xf8af655c <_ZN15QProcessPrivate5startE6QFlagsIN13QIODeviceBase12OpenModeFlagEE+708>:        copy r21,r26
   0xf8af6560 <_ZN15QProcessPrivate5startE6QFlagsIN13QIODeviceBase12OpenModeFlagEE+712>:        b,l 0xf8ad428c,rp
   0xf8af6564 <_ZN15QProcessPrivate5startE6QFlagsIN13QIODeviceBase12OpenModeFlagEE+716>:        stw r21,-c4(sp)
   0xf8af6568 <_ZN15QProcessPrivate5startE6QFlagsIN13QIODeviceBase12OpenModeFlagEE+720>:        copy r4,r19
=> 0xf8af656c <_ZN15QProcessPrivate5startE6QFlagsIN13QIODeviceBase12OpenModeFlagEE+724>:        ldw 0(r8),r20
   0xf8af6570 <_ZN15QProcessPrivate5startE6QFlagsIN13QIODeviceBase12OpenModeFlagEE+728>:        cmpib,<> 0,r20,0xf8af6aa0 <_ZN15QProcessPrivate5startE6QFlagsIN13QIODeviceBase12OpenModeFlagEE+2056>
   0xf8af6574 <_ZN15QProcessPrivate5startE6QFlagsIN13QIODeviceBase12OpenModeFlagEE+732>:        copy ret0,r3
   0xf8af6578 <_ZN15QProcessPrivate5startE6QFlagsIN13QIODeviceBase12OpenModeFlagEE+736>:        addil L%d000,r19,r1
End of assembler dump.
(gdb) p/x $r8
$1 = 0x5112

r8 is misaligned for ldw instruction but this didn't cause fault.

(gdb) x/x 0x5110
0x5110: Cannot access memory at address 0x5110

Regards,
Dave Anglin

-- System Information:
Debian Release: trixie/sid
  APT prefers buildd-unstable
  APT policy: (500, 'buildd-unstable'), (500, 'unstable')
Architecture: hppa (parisc64)

Kernel: Linux 6.1.40+ (SMP w/4 CPU threads)
Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

--- End Message ---
--- Begin Message --- 
The bug was fixed with the upload of qt6-base 6.4.2+dfsg-17, but we 
forgot to close the bug.


-- 
Med vänliga hälsningar

Patrick Franz

--- End Message ---
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