[I tried rebuilding things based on a full-bootstrap
build of lang/gcc8 instead. It made no difference.]
On 2019-May-23, at 14:17, Mark Millard <marklmi at yahoo.com> wrote:
> [It looks like code generation missed a level of indirection
> to me.]
>
>> On 2019-May-23, at 13:46, Mark Millard <marklmi at yahoo.com> wrote:
>>
>> [I should have listed uname -apKU output and such.]
>>
>> On 2019-May-23, at 13:21, Mark Millard <mark...@yahoo.com> wrote:
>>
>>> The poudriere bulk run that tried to build x11-toolkits/qt5-declarative
>>> got:
>>>
>>> --- qqmljsgrammar.cpp ---
>>> /usr/local/lib/qt5/bin/qlalr --no-debug --qt parser/qqmljs.g
>>> Segmentation fault (core dumped)
>>> *** [qqmljsgrammar.cpp] Error code 139
>>>
>>> make[3]: stopped in
>>> /wrkdirs/usr/ports/x11-toolkits/qt5-declarative/work/qtdeclarative-everywhere-src-5.12.2/src/qml
>>> 1 error
>>>
>>> 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:
>>>
>>> (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=0x810ab57d0
>>> <(anonymous namespace)::ctype_c>, src_type=0x810a8eaa0 <typeinfo for
>>> std::locale::facet>,
>>> dst_type=0x810a8fb18 <typeinfo for std::ctype<char>>, src2dst=0) 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=...) at
>>> /wrkdirs/usr/ports/lang/gcc8/work/.build/powerpc64-portbld-freebsd13.0/libstdc++-v3/include/bits/locale_classes.tcc:104
>>> #3 0x00000008109cb474 in std::basic_ios<char, std::char_traits<char>
>>> >::_M_cache_locale (this=0x810ab48c8 <std::cout+8>, __loc=...)
>>> at
>>> /wrkdirs/usr/ports/lang/gcc8/work/.build/powerpc64-portbld-freebsd13.0/libstdc++-v3/include/bits/basic_ios.tcc:157
>>> #4 0x00000008109cbad0 in std::basic_ios<char, std::char_traits<char>
>>> >::init (this=0x810ab48c8 <std::cout+8>, __sb=0x810ab36f8
>>> <__gnu_internal::buf_cout_sync>)
>>> at
>>> /wrkdirs/usr/ports/lang/gcc8/work/.build/powerpc64-portbld-freebsd13.0/libstdc++-v3/include/bits/basic_ios.tcc:126
>>> #5 0x000000081093e644 in std::basic_ostream<char, std::char_traits<char>
>>> >::basic_ostream (__sb=<optimized out>, this=<optimized out>,
>>> __in_chrg=<optimized out>, __vtt_parm=<optimized out>)
>>> at
>>> /wrkdirs/usr/ports/lang/gcc8/work/.build/powerpc64-portbld-freebsd13.0/libstdc++-v3/include/bits/basic_ios.h:460
>>> #6 std::ios_base::Init::Init (this=<optimized out>) at
>>> /wrkdirs/usr/ports/lang/gcc8/work/gcc-8.3.0/libstdc++-v3/src/c++98/ios_init.cc:91
>>> #7 std::ios_base::Init::Init (this=<optimized out>) at
>>> /wrkdirs/usr/ports/lang/gcc8/work/gcc-8.3.0/libstdc++-v3/src/c++98/ios_init.cc:78
>>> #8 0x000000001000334c in __static_initialization_and_destruction_0
>>> (__initialize_p=__initialize_p@entry=1, __priority=<optimized out>,
>>> __priority@entry=65535) at compress.cpp:273
>>> #9 0x0000000010004c2c in _GLOBAL__sub_I_compress.cpp(void) () at
>>> compress.cpp:273
>>> #10 0x000000081005dfa0 in objlist_call_init (list=<optimized out>,
>>> lockstate=<optimized out>) at /usr/src/libexec/rtld-elf/rtld.c:2728
>>> #11 0x000000081005c830 in _rtld (sp=<optimized out>, exit_proc=<optimized
>>> out>, objp=<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
>>>
>>>
>>>
>>> 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):
>>>
>>> Index: /usr/ports/Mk/Uses/qt-dist.mk
>>> ===================================================================
>>> --- /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
>>>
>>>
>>> (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.)
>>
>> I should have listed:
>>
>> # 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
>>
>> # 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
>>
>>
>> As part of experimenting with a system clang 8 based world
>> context:
>>
>> # svnlite diff /usr/ports/devel/binutils/Makefile
>> Index: /usr/ports/devel/binutils/Makefile
>> ===================================================================
>> --- /usr/ports/devel/binutils/Makefile (revision 501994)
>> +++ /usr/ports/devel/binutils/Makefile (working copy)
>> @@ -3,6 +3,7 @@
>>
>> PORTNAME= binutils
>> PORTVERSION= 2.32
>> +PORTREVISION= 1
>> PORTEPOCH?= 1
>> CATEGORIES?= devel
>> MASTER_SITES= SOURCEWARE/binutils/releases
>> @@ -13,7 +14,6 @@
>> LICENSE= GPLv3 LGPL3
>> LICENSE_COMB= multi
>>
>> -EXTRA_PATCHES=
>> ${FILESDIR}/binutils-do-not-provide-shared-section-symbols.patch:-p1
>> .if defined(PREFIX) && ${PREFIX} != "/usr"
>> BUILD_DEPENDS= ${LOCALBASE}/lib/libgmp.so:math/gmp \
>> ${LOCALBASE}/lib/libmpfr.so:math/mpfr
>>
>>
>> # svnlite diff /usr/ports/lang/gcc8/Makefile
>> Index: /usr/ports/lang/gcc8/Makefile
>> ===================================================================
>> --- /usr/ports/lang/gcc8/Makefile (revision 501994)
>> +++ /usr/ports/lang/gcc8/Makefile (working copy)
>> @@ -62,7 +62,7 @@
>>
>> .elif ${ARCH} == powerpc64
>> CONFIGURE_ENV+= UNAME_m="powerpc64"
>> -MAKE_ARGS+= CFLAGS_FOR_TARGET="-O1" CXXFLAGS_FOR_TARGET="-O1"
>> BOOT_CFLAGS="-O1" # PR235975
>> +#MAKE_ARGS+= CFLAGS_FOR_TARGET="-O1" CXXFLAGS_FOR_TARGET="-O1"
>> BOOT_CFLAGS="-O1" # PR235975
>>
>> .elif ${ARCH} == powerpcspe
>> CONFIGURE_ARGS+= --with-cpu=8548 --enable-e500_double --without-fp
>> @@ -80,7 +80,7 @@
>> CONFIGURE_ARGS+=--with-build-config=bootstrap-debug
>> ALL_TARGET= bootstrap-lean
>> .endif
>> -INSTALL_TARGET= install-strip
>> +#INSTALL_TARGET= install-strip
>> .if ${UID} != 0
>> BINMODE= 755
>> .endif
>>
>> 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.)
>>
>> # 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 @@
>>
>> /* Create a vector of the step value. */
>> tree step = build_int_cst (cr_index_scalar_type, nunits_out);
>> - tree vec_step = build_vector_from_val (cr_index_vector_type, step);
>> + tree vec_step_renamed = build_vector_from_val (cr_index_vector_type,
>> step);
>>
>> /* 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);
>>
>> /* Next create a new phi node vector (NEW_PHI_TREE) which starts
>> @@ -7641,7 +7641,7 @@
>> tree vec_def;
>> edge pe = 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 = vect_init_vector (phi, new_name,
>> TREE_TYPE (step_expr), NULL);
>> new_vec = build_vector_from_val (vectype, new_name);
>> - vec_step = vect_init_vector (phi, new_vec, vectype, NULL);
>> + vec_step_renamed = vect_init_vector (phi, new_vec, vectype, NULL);
>>
>> /* Now generate the IVs. */
>> unsigned group_size = SLP_TREE_SCALAR_STMTS (slp_node).length ();
>> @@ -7873,7 +7873,7 @@
>>
>> /* Create the iv update inside the loop */
>> vec_def = make_ssa_name (vec_dest);
>> - new_stmt = gimple_build_assign (vec_def, PLUS_EXPR, induc_def,
>> vec_step);
>> + new_stmt = 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));
>>
>> @@ -7904,7 +7904,7 @@
>> new_name = vect_init_vector (phi, new_name,
>> TREE_TYPE (step_expr), NULL);
>> new_vec = build_vector_from_val (vectype, new_name);
>> - vec_step = vect_init_vector (phi, new_vec, vectype, NULL);
>> + vec_step_renamed = vect_init_vector (phi, new_vec, vectype, NULL);
>> for (; ivn < nvects; ++ivn)
>> {
>> gimple *iv = SLP_TREE_VEC_STMTS (slp_node)[ivn - nivs];
>> @@ -7915,7 +7915,7 @@
>> def = gimple_assign_lhs (iv);
>> new_stmt = gimple_build_assign (make_ssa_name (vectype),
>> PLUS_EXPR,
>> - def, vec_step);
>> + def, vec_step_renamed);
>> if (gimple_code (iv) == 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) == SSA_NAME);
>> new_vec = build_vector_from_val (vectype, t);
>> - vec_step = vect_init_vector (phi, new_vec, vectype, NULL);
>> + vec_step_renamed = vect_init_vector (phi, new_vec, vectype, NULL);
>>
>>
>> /* Create the following def-use cycle:
>> @@ -8064,7 +8064,7 @@
>>
>> /* Create the iv update inside the loop */
>> vec_def = make_ssa_name (vec_dest);
>> - new_stmt = gimple_build_assign (vec_def, PLUS_EXPR, induc_def, vec_step);
>> + new_stmt = 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));
>>
>> @@ -8108,7 +8108,7 @@
>> gcc_assert (CONSTANT_CLASS_P (new_name)
>> || TREE_CODE (new_name) == SSA_NAME);
>> new_vec = build_vector_from_val (vectype, t);
>> - vec_step = vect_init_vector (phi, new_vec, vectype, NULL);
>> + vec_step_renamed = vect_init_vector (phi, new_vec, vectype, NULL);
>>
>> vec_def = induc_def;
>> prev_stmt_vinfo = vinfo_for_stmt (induction_phi);
>> @@ -8116,7 +8116,7 @@
>> {
>> /* vec_i = vec_prev + vec_step */
>> new_stmt = gimple_build_assign (vec_dest, PLUS_EXPR,
>> - vec_def, vec_step);
>> + vec_def, vec_step_renamed);
>> vec_def = make_ssa_name (vec_dest, new_stmt);
>> gimple_assign_set_lhs (new_stmt, vec_def);
>>
>>
>> # svnlite diff /usr/ports/devel/libunwind/Makefile
>> Index: /usr/ports/devel/libunwind/Makefile
>> ===================================================================
>> --- /usr/ports/devel/libunwind/Makefile (revision 501994)
>> +++ /usr/ports/devel/libunwind/Makefile (working copy)
>> @@ -22,6 +22,8 @@
>>
>> USES= libtool pathfix pkgconfig
>> USE_LDCONFIG= yes
>> +CFLAGS+= -fPIC
>> +
>> GNU_CONFIGURE= yes
>> INSTALL_TARGET= install-strip
>> LLD_UNSAFE= yes
>>
>>
>>
>> I do use an ALLOW_OPTIMIZATIONS_FOR_WITH_DEBUG change to
>> bsd.port.mk (ignore the OPSYS and _OSRELEASE inline
>> substitutions):
>>
>> # svnlite diff /usr/ports/Mk/bsd.port.mk
>> Index: /usr/ports/Mk/bsd.port.mk
>> ===================================================================
>> --- /usr/ports/Mk/bsd.port.mk (revision 501994)
>> +++ /usr/ports/Mk/bsd.port.mk (working copy)
>> @@ -1151,12 +1151,12 @@
>>
>> # Get the operating system type
>> .if !defined(OPSYS)
>> -OPSYS!= ${UNAME} -s
>> +OPSYS!= echo FreeBSD
>> .endif
>> _EXPORTED_VARS+= OPSYS
>>
>> .if !defined(_OSRELEASE)
>> -_OSRELEASE!= ${UNAME} -r
>> +_OSRELEASE!= echo 13.0-CURRENT
>> .endif
>> _EXPORTED_VARS+= _OSRELEASE
>>
>> @@ -1762,7 +1762,11 @@
>> STRIP_CMD= ${TRUE}
>> .endif
>> DEBUG_FLAGS?= -g
>> +.if defined(ALLOW_OPTIMIZATIONS_FOR_WITH_DEBUG)
>> +CFLAGS:= ${CFLAGS} ${DEBUG_FLAGS}
>> +.else
>> CFLAGS:= ${CFLAGS:N-O*:N-fno-strict*} ${DEBUG_FLAGS}
>> +.endif
>> .if defined(INSTALL_TARGET)
>> INSTALL_TARGET:= ${INSTALL_TARGET:S/^install-strip$/install/g}
>> .endif
>>
>>
>> (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.)
>
> 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:
> => 0x0000000810a96be0 <+0>: .long 0x8
> 0x0000000810a96be4 <+4>: .long 0x109273d0
> 0x0000000810a96be8 <+8>: .long 0x8
> 0x0000000810a96bec <+12>: vsubuqm v5,v11,v7
> End of assembler dump.
>
> Note that for the 0x8'1092'73d0 from the +0 and +4:
>
> (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.
>
> And the code that got to 0x810a96be0 was:
>
> (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
> => 0x000000081092152c <+156>: ld r2,40(r1)
> . . .
>
> with ctr holding: 0x810a96be0
>
> (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
> . . .
>
> It looks to me like:
>
> 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
>
> needed something like another instruction to get
> the correct address into ctr for the later bctrl
> use:
>
> ld r0,0(r12)
> ld r11,16(r12)
> ld r0,0(r0) # <<=== Needed?
> mtctr r0
> ld r2,8(r12)
> bctrl
>
I:
A) changed the options for devel/gcc8 in poudriere to
use full-bootstrap.
B) had poudriere bulk rebuild devel/gcc8
(and I installed the result as well)
C) had poudriere bulk rebuild devel/qt5-core
(and I installed the result as well)
D) had poudriere bulk again attempt:
x11-toolkits/qt5-declarative
The result was the same failure.
===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)
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