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