Date: Thu, 23 May 2019 21:09:39 -0700 From: Mark Millard <marklmi@yahoo.com> To: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>, ports-list freebsd <freebsd-ports@freebsd.org> Subject: Re: powerpc64 context: x11-toolkits/qt5-declarative fails to build in poudriere: /usr/local/lib/qt5/bin/qlalr segmentation faults in std::type_info::~type_info() () from /usr/local/lib/gcc8/libstdc++.so.6 Message-ID: <CA16609F-0AEA-46B0-A8CE-9280A4E90058@yahoo.com> In-Reply-To: <33026AD5-9CB0-43CB-84EA-5B2B914A7EB0@yahoo.com> References: <8B8355C5-731B-4F03-AA98-11324C618D3C@yahoo.com> <590AAD80-8D2F-4F7A-8910-001D72A5E666@yahoo.com> <22D9DF10-E58A-49E5-8372-CC9D263A7C76@yahoo.com> <33026AD5-9CB0-43CB-84EA-5B2B914A7EB0@yahoo.com>
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[Merely adding the extra instruction was not the right idea
for what the problem is.]
On 2019-May-23, at 20:10, Mark Millard <marklmi at yahoo.com> wrote:
> [I tried rebuilding things based on a full-bootstrap
> build of lang/gcc8 instead. It made no difference.]
>=20
> On 2019-May-23, at 14:17, Mark Millard <marklmi at yahoo.com> wrote:
>=20
>> [It looks like code generation missed a level of indirection
>> to me.]
>>=20
>>> On 2019-May-23, at 13:46, Mark Millard <marklmi at yahoo.com> wrote:
>>>=20
>>> [I should have listed uname -apKU output and such.]
>>>=20
>>> On 2019-May-23, at 13:21, Mark Millard <marklmi@yahoo.com> wrote:
>>>=20
>>>> The poudriere bulk run that tried to build =
x11-toolkits/qt5-declarative
>>>> got:
>>>>=20
>>>> --- qqmljsgrammar.cpp ---
>>>> /usr/local/lib/qt5/bin/qlalr --no-debug --qt parser/qqmljs.g
>>>> Segmentation fault (core dumped)
>>>> *** [qqmljsgrammar.cpp] Error code 139
>>>>=20
>>>> make[3]: stopped in =
/wrkdirs/usr/ports/x11-toolkits/qt5-declarative/work/qtdeclarative-everywh=
ere-src-5.12.2/src/qml
>>>> 1 error
>>>>=20
>>>> Installing qt5-core and manually running under gdb from
>>>> an expansion of the bulk's tar of the failure, I was able
>>>> to get a backtrace:
>>>>=20
>>>> (gdb) run --no-debug --qt parser/qqmljs.g
>>>> Starting program: /usr/local/bin/qlalr --no-debug --qt =
parser/qqmljs.g
>>>> process 26823 is executing new program: =
/usr/local/lib/qt5/bin/qlalr
>>>> . . . (text about auto-loading has been declined and such) . . .
>>>> Program received signal SIGSEGV, Segmentation fault.
>>>> 0x0000000810a96be0 in std::type_info::~type_info() () from =
/usr/local/lib/gcc8/libstdc++.so.6
>>>> (gdb) bt
>>>> #0 0x0000000810a96be0 in std::type_info::~type_info() () from =
/usr/local/lib/gcc8/libstdc++.so.6
>>>> #1 0x000000081092152c in __cxxabiv1::__dynamic_cast =
(src_ptr=3D0x810ab57d0 <(anonymous namespace)::ctype_c>, =
src_type=3D0x810a8eaa0 <typeinfo for std::locale::facet>,=20
>>>> dst_type=3D0x810a8fb18 <typeinfo for std::ctype<char>>, src2dst=3D0) =
at =
/wrkdirs/usr/ports/lang/gcc8/work/gcc-8.3.0/libstdc++-v3/libsupc++/dyncast=
.cc:71
>>>> #2 0x00000008109df908 in std::has_facet<std::ctype<char> > =
(__loc=3D...) at =
/wrkdirs/usr/ports/lang/gcc8/work/.build/powerpc64-portbld-freebsd13.0/lib=
stdc++-v3/include/bits/locale_classes.tcc:104
>>>> #3 0x00000008109cb474 in std::basic_ios<char, =
std::char_traits<char> >::_M_cache_locale (this=3D0x810ab48c8 =
<std::cout+8>, __loc=3D...)
>>>> at =
/wrkdirs/usr/ports/lang/gcc8/work/.build/powerpc64-portbld-freebsd13.0/lib=
stdc++-v3/include/bits/basic_ios.tcc:157
>>>> #4 0x00000008109cbad0 in std::basic_ios<char, =
std::char_traits<char> >::init (this=3D0x810ab48c8 <std::cout+8>, =
__sb=3D0x810ab36f8 <__gnu_internal::buf_cout_sync>)
>>>> at =
/wrkdirs/usr/ports/lang/gcc8/work/.build/powerpc64-portbld-freebsd13.0/lib=
stdc++-v3/include/bits/basic_ios.tcc:126
>>>> #5 0x000000081093e644 in std::basic_ostream<char, =
std::char_traits<char> >::basic_ostream (__sb=3D<optimized out>, =
this=3D<optimized out>, __in_chrg=3D<optimized out>, =
__vtt_parm=3D<optimized out>)
>>>> at =
/wrkdirs/usr/ports/lang/gcc8/work/.build/powerpc64-portbld-freebsd13.0/lib=
stdc++-v3/include/bits/basic_ios.h:460
>>>> #6 std::ios_base::Init::Init (this=3D<optimized out>) at =
/wrkdirs/usr/ports/lang/gcc8/work/gcc-8.3.0/libstdc++-v3/src/c++98/ios_ini=
t.cc:91
>>>> #7 std::ios_base::Init::Init (this=3D<optimized out>) at =
/wrkdirs/usr/ports/lang/gcc8/work/gcc-8.3.0/libstdc++-v3/src/c++98/ios_ini=
t.cc:78
>>>> #8 0x000000001000334c in __static_initialization_and_destruction_0 =
(__initialize_p=3D__initialize_p@entry=3D1, __priority=3D<optimized =
out>, __priority@entry=3D65535) at compress.cpp:273
>>>> #9 0x0000000010004c2c in _GLOBAL__sub_I_compress.cpp(void) () at =
compress.cpp:273
>>>> #10 0x000000081005dfa0 in objlist_call_init (list=3D<optimized =
out>, lockstate=3D<optimized out>) at =
/usr/src/libexec/rtld-elf/rtld.c:2728
>>>> #11 0x000000081005c830 in _rtld (sp=3D<optimized out>, =
exit_proc=3D<optimized out>, objp=3D<optimized out>) at =
/usr/src/libexec/rtld-elf/rtld.c:765
>>>> #12 0x000000081005a240 in ._rtld_start () at =
/usr/src/libexec/rtld-elf/powerpc64/rtld_start.S:83
>>>> Backtrace stopped: frame did not save the PC
>>>>=20
>>>>=20
>>>>=20
>>>> NOTE: In order to have built devel/qt5-core I used a patch
>>>> to make sure that all the %%LOCALBASE%% strings were replaced
>>>> (otherwise in the powerpc64 system clang 8 based world the
>>>> devel/qt5-core build failed from -I%%LOCALBASE%%... use):
>>>>=20
>>>> Index: /usr/ports/Mk/Uses/qt-dist.mk
>>>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>>> --- /usr/ports/Mk/Uses/qt-dist.mk (revision 501994)
>>>> +++ /usr/ports/Mk/Uses/qt-dist.mk (working copy)
>>>> @@ -251,7 +251,7 @@
>>>> .if ${_QT_VER:M5}
>>>> post-patch: gcc-post-patch
>>>> gcc-post-patch:
>>>> - ${REINPLACE_CMD} 's|%%LOCALBASE%%|${LOCALBASE}|' \
>>>> + ${REINPLACE_CMD} 's|%%LOCALBASE%%|${LOCALBASE}|g' \
>>>> ${WRKSRC}/mkspecs/common/gcc-base.conf \
>>>> ${WRKSRC}/mkspecs/freebsd-g++/qmake.conf
>>>> ${REINPLACE_CMD} 's|%%GCC_DEFAULT%%|${GCC_DEFAULT}|g' \
>>>> @@ -298,7 +298,7 @@
>>>> # ports/194088.
>>>> post-patch: qtbase-post-patch
>>>> qtbase-post-patch:
>>>> - ${REINPLACE_CMD} -e 's|%%LOCALBASE%%|${LOCALBASE}|g' \
>>>> + ${REINPLACE_CMD} 's|%%LOCALBASE%%|${LOCALBASE}|g' \
>>>> ${WRKSRC}/mkspecs/common/bsd/bsd.conf \
>>>> ${WRKSRC}/mkspecs/freebsd-clang/qmake.conf
>>>>=20
>>>>=20
>>>> (So having the missing g added but not having the optional -e
>>>> usage in the other %%LOCALBASE%% related command. The -e
>>>> status is optional here: only one command to sed sed command
>>>> in each sed command. The additional g is the important part.)
>>>=20
>>> I should have listed:
>>>=20
>>> # uname -apKU
>>> FreeBSD FBSDG5L 13.0-CURRENT FreeBSD 13.0-CURRENT #0 r347549M: Wed =
May 22 15:14:43 PDT 2019 =
markmi@FBSDG5L:/usr/obj/powerpc64vtsc_clang_altbinutils/powerpc.powerpc64/=
usr/src/powerpc.powerpc64/sys/GENERIC64vtsc-NODBG powerpc powerpc64 =
1300025 1300025
>>>=20
>>> # svnlite info /usr/ports/ | grep 'Re[plv]' | more
>>> Relative URL: ^/head
>>> Repository Root: svn://svn0.us-west.freebsd.org/ports
>>> Repository UUID: 35697150-7ecd-e111-bb59-0022644237b5
>>> Revision: 501994
>>> Last Changed Rev: 501994
>>>=20
>>>=20
>>> As part of experimenting with a system clang 8 based world
>>> context:
>>>=20
>>> # svnlite diff /usr/ports/devel/binutils/Makefile
>>> Index: /usr/ports/devel/binutils/Makefile
>>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>> --- /usr/ports/devel/binutils/Makefile (revision 501994)
>>> +++ /usr/ports/devel/binutils/Makefile (working copy)
>>> @@ -3,6 +3,7 @@
>>>=20
>>> PORTNAME=3D binutils
>>> PORTVERSION=3D 2.32
>>> +PORTREVISION=3D 1
>>> PORTEPOCH?=3D 1
>>> CATEGORIES?=3D devel
>>> MASTER_SITES=3D SOURCEWARE/binutils/releases
>>> @@ -13,7 +14,6 @@
>>> LICENSE=3D GPLv3 LGPL3
>>> LICENSE_COMB=3D multi
>>>=20
>>> -EXTRA_PATCHES=3D =
${FILESDIR}/binutils-do-not-provide-shared-section-symbols.patch:-p1
>>> .if defined(PREFIX) && ${PREFIX} !=3D "/usr"
>>> BUILD_DEPENDS=3D ${LOCALBASE}/lib/libgmp.so:math/gmp \
>>> ${LOCALBASE}/lib/libmpfr.so:math/mpfr
>>>=20
>>>=20
>>> # svnlite diff /usr/ports/lang/gcc8/Makefile
>>> Index: /usr/ports/lang/gcc8/Makefile
>>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>> --- /usr/ports/lang/gcc8/Makefile (revision 501994)
>>> +++ /usr/ports/lang/gcc8/Makefile (working copy)
>>> @@ -62,7 +62,7 @@
>>>=20
>>> .elif ${ARCH} =3D=3D powerpc64
>>> CONFIGURE_ENV+=3D UNAME_m=3D"powerpc64"
>>> -MAKE_ARGS+=3D CFLAGS_FOR_TARGET=3D"-O1" =
CXXFLAGS_FOR_TARGET=3D"-O1" BOOT_CFLAGS=3D"-O1" # PR235975
>>> +#MAKE_ARGS+=3D CFLAGS_FOR_TARGET=3D"-O1" =
CXXFLAGS_FOR_TARGET=3D"-O1" BOOT_CFLAGS=3D"-O1" # PR235975
>>>=20
>>> .elif ${ARCH} =3D=3D powerpcspe
>>> CONFIGURE_ARGS+=3D --with-cpu=3D8548 --enable-e500_double =
--without-fp
>>> @@ -80,7 +80,7 @@
>>> CONFIGURE_ARGS+=3D--with-build-config=3Dbootstrap-debug
>>> ALL_TARGET=3D bootstrap-lean
>>> .endif
>>> -INSTALL_TARGET=3D install-strip
>>> +#INSTALL_TARGET=3D install-strip
>>> .if ${UID} !=3D 0
>>> BINMODE=3D 755
>>> .endif
>>>=20
>>> I had to work around clang reserving "vec_step" as a name
>>> in contexts where the gcc8 source code used that name:
>>> (vec_step is associated with support of the the vector
>>> instructions on powerpc64.)
>>>=20
>>> # more /usr/ports/lang/gcc8/files/patch-gcc_tree-vect-loop.c
>>> --- gcc/tree-vect-loop.c.orig 2018-10-10 22:41:40.295753000 -0700
>>> +++ gcc/tree-vect-loop.c 2018-10-10 22:57:44.698855000 -0700
>>> @@ -4970,13 +4970,13 @@
>>>=20
>>> /* Create a vector of the step value. */
>>> tree step =3D build_int_cst (cr_index_scalar_type, nunits_out);
>>> - tree vec_step =3D build_vector_from_val =
(cr_index_vector_type, step);
>>> + tree vec_step_renamed =3D build_vector_from_val =
(cr_index_vector_type, step);
>>>=20
>>> /* Create an induction variable. */
>>> gimple_stmt_iterator incr_gsi;
>>> bool insert_after;
>>> standard_iv_increment_position (loop, &incr_gsi, &insert_after);
>>> - create_iv (series_vect, vec_step, NULL_TREE, loop, &incr_gsi,
>>> + create_iv (series_vect, vec_step_renamed, NULL_TREE, loop, =
&incr_gsi,
>>> insert_after, &indx_before_incr, &indx_after_incr);
>>>=20
>>> /* Next create a new phi node vector (NEW_PHI_TREE) which starts
>>> @@ -7641,7 +7641,7 @@
>>> tree vec_def;
>>> edge pe =3D loop_preheader_edge (loop);
>>> basic_block new_bb;
>>> - tree new_vec, vec_init, vec_step, t;
>>> + tree new_vec, vec_init, vec_step_renamed, t;
>>> tree new_name;
>>> gimple *new_stmt;
>>> gphi *induction_phi;
>>> @@ -7834,7 +7834,7 @@
>>> new_name =3D vect_init_vector (phi, new_name,
>>> TREE_TYPE (step_expr), NULL);
>>> new_vec =3D build_vector_from_val (vectype, new_name);
>>> - vec_step =3D vect_init_vector (phi, new_vec, vectype, NULL);
>>> + vec_step_renamed =3D vect_init_vector (phi, new_vec, vectype, =
NULL);
>>>=20
>>> /* Now generate the IVs. */
>>> unsigned group_size =3D SLP_TREE_SCALAR_STMTS (slp_node).length =
();
>>> @@ -7873,7 +7873,7 @@
>>>=20
>>> /* Create the iv update inside the loop */
>>> vec_def =3D make_ssa_name (vec_dest);
>>> - new_stmt =3D gimple_build_assign (vec_def, PLUS_EXPR, =
induc_def, vec_step);
>>> + new_stmt =3D gimple_build_assign (vec_def, PLUS_EXPR, =
induc_def, vec_step_renamed);
>>> gsi_insert_before (&si, new_stmt, GSI_SAME_STMT);
>>> set_vinfo_for_stmt (new_stmt, new_stmt_vec_info (new_stmt, =
loop_vinfo));
>>>=20
>>> @@ -7904,7 +7904,7 @@
>>> new_name =3D vect_init_vector (phi, new_name,
>>> TREE_TYPE (step_expr), NULL);
>>> new_vec =3D build_vector_from_val (vectype, new_name);
>>> - vec_step =3D vect_init_vector (phi, new_vec, vectype, =
NULL);
>>> + vec_step_renamed =3D vect_init_vector (phi, new_vec, =
vectype, NULL);
>>> for (; ivn < nvects; ++ivn)
>>> {
>>> gimple *iv =3D SLP_TREE_VEC_STMTS (slp_node)[ivn - nivs];
>>> @@ -7915,7 +7915,7 @@
>>> def =3D gimple_assign_lhs (iv);
>>> new_stmt =3D gimple_build_assign (make_ssa_name =
(vectype),
>>> PLUS_EXPR,
>>> - def, vec_step);
>>> + def, =
vec_step_renamed);
>>> if (gimple_code (iv) =3D=3D GIMPLE_PHI)
>>> gsi_insert_before (&si, new_stmt, GSI_SAME_STMT);
>>> else
>>> @@ -8041,7 +8041,7 @@
>>> gcc_assert (CONSTANT_CLASS_P (new_name)
>>> || TREE_CODE (new_name) =3D=3D SSA_NAME);
>>> new_vec =3D build_vector_from_val (vectype, t);
>>> - vec_step =3D vect_init_vector (phi, new_vec, vectype, NULL);
>>> + vec_step_renamed =3D vect_init_vector (phi, new_vec, vectype, =
NULL);
>>>=20
>>>=20
>>> /* Create the following def-use cycle:
>>> @@ -8064,7 +8064,7 @@
>>>=20
>>> /* Create the iv update inside the loop */
>>> vec_def =3D make_ssa_name (vec_dest);
>>> - new_stmt =3D gimple_build_assign (vec_def, PLUS_EXPR, induc_def, =
vec_step);
>>> + new_stmt =3D gimple_build_assign (vec_def, PLUS_EXPR, induc_def, =
vec_step_renamed);
>>> gsi_insert_before (&si, new_stmt, GSI_SAME_STMT);
>>> set_vinfo_for_stmt (new_stmt, new_stmt_vec_info (new_stmt, =
loop_vinfo));
>>>=20
>>> @@ -8108,7 +8108,7 @@
>>> gcc_assert (CONSTANT_CLASS_P (new_name)
>>> || TREE_CODE (new_name) =3D=3D SSA_NAME);
>>> new_vec =3D build_vector_from_val (vectype, t);
>>> - vec_step =3D vect_init_vector (phi, new_vec, vectype, NULL);
>>> + vec_step_renamed =3D vect_init_vector (phi, new_vec, vectype, =
NULL);
>>>=20
>>> vec_def =3D induc_def;
>>> prev_stmt_vinfo =3D vinfo_for_stmt (induction_phi);
>>> @@ -8116,7 +8116,7 @@
>>> {
>>> /* vec_i =3D vec_prev + vec_step */
>>> new_stmt =3D gimple_build_assign (vec_dest, PLUS_EXPR,
>>> - vec_def, vec_step);
>>> + vec_def, =
vec_step_renamed);
>>> vec_def =3D make_ssa_name (vec_dest, new_stmt);
>>> gimple_assign_set_lhs (new_stmt, vec_def);
>>>=20
>>>=20
>>> # svnlite diff /usr/ports/devel/libunwind/Makefile
>>> Index: /usr/ports/devel/libunwind/Makefile
>>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>> --- /usr/ports/devel/libunwind/Makefile (revision 501994)
>>> +++ /usr/ports/devel/libunwind/Makefile (working copy)
>>> @@ -22,6 +22,8 @@
>>>=20
>>> USES=3D libtool pathfix pkgconfig
>>> USE_LDCONFIG=3D yes
>>> +CFLAGS+=3D -fPIC
>>> +
>>> GNU_CONFIGURE=3D yes
>>> INSTALL_TARGET=3D install-strip
>>> LLD_UNSAFE=3D yes
>>>=20
>>>=20
>>>=20
>>> I do use an ALLOW_OPTIMIZATIONS_FOR_WITH_DEBUG change to
>>> bsd.port.mk (ignore the OPSYS and _OSRELEASE inline
>>> substitutions):
>>>=20
>>> # svnlite diff /usr/ports/Mk/bsd.port.mk
>>> Index: /usr/ports/Mk/bsd.port.mk
>>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>> --- /usr/ports/Mk/bsd.port.mk (revision 501994)
>>> +++ /usr/ports/Mk/bsd.port.mk (working copy)
>>> @@ -1151,12 +1151,12 @@
>>>=20
>>> # Get the operating system type
>>> .if !defined(OPSYS)
>>> -OPSYS!=3D ${UNAME} -s
>>> +OPSYS!=3D echo FreeBSD
>>> .endif
>>> _EXPORTED_VARS+=3D OPSYS
>>>=20
>>> .if !defined(_OSRELEASE)
>>> -_OSRELEASE!=3D ${UNAME} -r
>>> +_OSRELEASE!=3D echo 13.0-CURRENT
>>> .endif
>>> _EXPORTED_VARS+=3D _OSRELEASE
>>>=20
>>> @@ -1762,7 +1762,11 @@
>>> STRIP_CMD=3D ${TRUE}
>>> .endif
>>> DEBUG_FLAGS?=3D -g
>>> +.if defined(ALLOW_OPTIMIZATIONS_FOR_WITH_DEBUG)
>>> +CFLAGS:=3D ${CFLAGS} ${DEBUG_FLAGS}
>>> +.else
>>> CFLAGS:=3D ${CFLAGS:N-O*:N-fno-strict*} ${DEBUG_FLAGS}
>>> +.endif
>>> .if defined(INSTALL_TARGET)
>>> INSTALL_TARGET:=3D ${INSTALL_TARGET:S/^install-strip$/install/g}
>>> .endif
>>>=20
>>>=20
>>> (I once had a context where the ${UNAME} -s and ${UNAME} -r
>>> lines each ended up with empty strings assigned. The echo's
>>> just worked around the problem. I've no clue if I'd still
>>> have the problem.)
>>=20
>> Program received signal SIGSEGV, Segmentation fault.
>> 0x0000000810a96be0 in std::type_info::~type_info() () from =
/usr/local/lib/gcc8/libstdc++.so.6
>> (gdb) disass
>> Dump of assembler code for function _ZNSt9type_infoD2Ev:
>> =3D> 0x0000000810a96be0 <+0>: .long 0x8
>> 0x0000000810a96be4 <+4>: .long 0x109273d0
>> 0x0000000810a96be8 <+8>: .long 0x8
>> 0x0000000810a96bec <+12>: vsubuqm v5,v11,v7
>> End of assembler dump.
>>=20
>> Note that for the 0x8'1092'73d0 from the +0 and +4:
>>=20
>> (gdb) disass 0x8109273d0
>> Dump of assembler code for function std::type_info::~type_info():
>> 0x00000008109273d0 <+0>: blr
>> 0x00000008109273d4 <+4>: .long 0x0
>> 0x00000008109273d8 <+8>: .long 0x90000
>> 0x00000008109273dc <+12>: .long 0x0
>> End of assembler dump.
>>=20
>> And the code that got to 0x810a96be0 was:
>>=20
>> (gdb) disass
>> Dump of assembler code for function __cxxabiv1::__dynamic_cast(void =
const*, __cxxabiv1::__class_type_info const*, =
__cxxabiv1::__class_type_info const*, ptrdiff_t):
>> . . .
>> 0x0000000810921518 <+136>: ld r0,0(r12)
>> 0x000000081092151c <+140>: ld r11,16(r12)
>> 0x0000000810921520 <+144>: mtctr r0
>> 0x0000000810921524 <+148>: ld r2,8(r12)
>> 0x0000000810921528 <+152>: bctrl
>> =3D> 0x000000081092152c <+156>: ld r2,40(r1)
>> . . .
>>=20
>> with ctr holding: 0x810a96be0
>>=20
>> (gdb) info reg
>> . . .
>> pc 0x81092152c 0x81092152c =
<__cxxabiv1::__dynamic_cast(void const*, __cxxabiv1::__class_type_info =
const*, __cxxabiv1::__class_type_info const*, ptrdiff_t)+156>
>> . . .
>> lr 0x81092152c 0x81092152c =
<__cxxabiv1::__dynamic_cast(void const*, __cxxabiv1::__class_type_info =
const*, __cxxabiv1::__class_type_info const*, ptrdiff_t)+156>
>> ctr 0x810a96be0 34639277024
>> . . .
>>=20
>> It looks to me like:
>>=20
>> 0x0000000810921518 <+136>: ld r0,0(r12)
>> 0x000000081092151c <+140>: ld r11,16(r12)
>> 0x0000000810921520 <+144>: mtctr r0
>> 0x0000000810921524 <+148>: ld r2,8(r12)
>> 0x0000000810921528 <+152>: bctrl
>>=20
>> needed something like another instruction to get
>> the correct address into ctr for the later bctrl
>> use:=20
>>=20
>> ld r0,0(r12)
>> ld r11,16(r12)
>> ld r0,0(r0) # <<=3D=3D=3D Needed?
>> mtctr r0
>> ld r2,8(r12)
>> bctrl
The extra instruction is wrong and 0x00000008109273d0
appears to not have code.
So, it still looks it tried to execute a pointer as code,
I do not yet know what is going on to get it there.
> I:
>=20
> A) changed the options for devel/gcc8 in poudriere to
> use full-bootstrap.
>=20
> B) had poudriere bulk rebuild devel/gcc8
> (and I installed the result as well)
>=20
> C) had poudriere bulk rebuild devel/qt5-core
> (and I installed the result as well)
>=20
> D) had poudriere bulk again attempt:
> x11-toolkits/qt5-declarative
>=20
>=20
> The result was the same failure.
=3D=3D=3D
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)
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