On Mon, 18 Aug 2025 21:51:05 +0200, Kirill A. Korinsky <[email protected]> wrote: > > On Mon, 18 Aug 2025 20:53:57 +0200, > Jeremie Courreges-Anglas <[email protected]> wrote: > > > > > So, here a new version which the cleaner, and it also allow to move a bit > > > forward with sparc64 build. Now it fails because our ld is crashed. > > > > Woo hoo, congrats! Did you get feedback on mips64? > > > > I'll send to bugs@ later that I do have with sparc64, probably it is bug on > our end. >
After some thinking, not sure that bugs@ is right place so I let put it here, and I always can send it to bugs@ anyway. The first commit which I can't build on openbsd/sparc64 is https://gcc.gnu.org/cgit/gcc/commit/?id=9b884225bfc609606f9b169b021c4da93feba48e If I remove introduced condition if (!cmp_type || iv_precision > TYPE_PRECISION (cmp_type)) I can build it for the next few commits, until it explode again like this: Program terminated with signal SIGSEGV, Segmentation fault. #0 0x000000a31e861600 in _ZN4bidi7contextC1Ev+0xfffffffffb59ea0c@plt () (gdb) disassemble Dump of assembler code for function _ZN4bidi7contextC1Ev+0xfffffffffb59ea0c@plt: 0x000000a31e8615f0 <+0>: mov %o7, %g5 0x000000a31e8615f4 <+4>: call 0xa31e8615fc <_ZN4bidi7contextC1Ev+0xfffffffffb59ea0c@plt+12> 0x000000a31e8615f8 <+8>: nop 0x000000a31e8615fc <+12>: ldx [ %o7 + 0x65c ], %g1 => 0x000000a31e861600 <+16>: jmpl %o7 + %g1, %g1 0x000000a31e861604 <+20>: mov %g5, %o7 End of assembler dump. (gdb) p/x $o7 + 0x65c $1 = 0xa31e861c50 (gdb) x/x $o7 + 0x65c 0xa31e861c50 <[email protected]>: 0xf9e379e0 (gdb) p/x $o7 + $g1 $2 = 0xf9e37a841e6ff100 (gdb) x/x $o7 + $g1 0xf9e37a841e6ff100: Cannot access memory at address 0xf9e37a841e6ff100 (gdb) x/x $g1 0xf9e379e0ffe9db0c: Cannot access memory at address 0xf9e379e0ffe9db0c (gdb) p/x $g1 $3 = 0xf9e379e0ffe9db0c (gdb) different commits lead to a different place, but it always a code like this. If I build the first compiler without PIE, by removing --enable-host-pie from line 166, it leads to a crash like this: /usr/local/bootstrap-gcc/bin/g++ -std=c++14 -fno-PIE -c -DIN_GCC_FRONTEND -g -DIN_GCC -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-error=narrowing -Wwrite-strings -Wcast-qual -Wno-format -Wmissing-format-attribute -Wconditionally-supported -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -DHAVE_CONFIG_H -fno-PIE -I. -I. -I/usr/ports/pobj/gcc-15.2.0/gcc-15.2.0/gcc -I/usr/ports/pobj/gcc-15.2.0/gcc-15.2.0/gcc/. -I/usr/ports/pobj/gcc-15.2.0/gcc-15.2.0/gcc/../include -I/usr/ports/pobj/gcc-15.2.0/gcc-15.2.0/gcc/../libcpp/include -I/usr/ports/pobj/gcc-15.2.0/gcc-15.2.0/gcc/../libcody -I/usr/local/include -I/usr/ports/pobj/gcc-15.2.0/gcc-15.2.0/gcc/../libdecnumber -I/usr/ports/pobj/gcc-15.2.0/gcc-15.2.0/gcc/../libdecnumber/dpd -I../libdecnumber -I/usr/ports/pobj/gcc-15.2.0/gcc-15.2.0/gcc/../libbacktrace -o cc1-checksum.o -MT cc1-checksum.o -MMD -MP -MF ./.deps/cc1-checksum.TPo cc1-checksum.cc /usr/local/bootstrap-gcc/bin/g++ -std=c++14 -no-pie -g -DIN_GCC -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-error=narrowing -Wwrite-strings -Wcast-qual -Wno-format -Wmissing-format-attribute -Wconditionally-supported -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -DHAVE_CONFIG_H -no-pie -static-libstdc++ -static-libgcc -o cc1 c/c-lang.o c-family/stub-objc.o attribs.o c/c-errors.o c/c-decl.o c/c-typeck.o c/c-convert.o c/c-aux-info.o c/c-objc-common.o c/c-parser.o c/c-fold.o c/gimple-parser.o c-family/c-common.o c-family/c-cppbuiltin.o c-family/c-dump.o c-family/c-format.o c-family/c-gimplify.o c-family/c-indentation.o c-family/c-lex.o c-family/c-omp.o c-family/c-opts.o c-family/c-pch.o c-family/c-ppoutput.o c-family/c-pragma.o c-family/c-pretty-print.o c-family/c-semantics.o c-family/c-ada-spec.o c-family/c-ubsan.o c-family/known-headers.o c-family/c-attribs.o c-family/c-warn.o c-family/c-spellcheck.o c-family /c-type-mismatch.o sparc-c.o default-c.o \ cc1-checksum.o simple-diagnostic-path.o lazy-diagnostic-path.o libbackend.a main.o libcommon-target.a libcommon.a ../libcpp/libcpp.a ../libdecnumber/libdecnumber.a libcommon.a ../libcpp/libcpp.a ../libbacktrace/.libs/libbacktrace.a ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a -L/usr/local/lib -lmpc -lmpfr -lgmp -rdynamic -lz collect2: fatal error: ld terminated with signal 11 [Segmentation fault], core dumped with absolutle useless stacktrace inside core: Core was generated by `ld.bfd'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00000099a352bb48 in bfd_putb64 () (gdb) bt #0 0x00000099a352bb48 in bfd_putb64 () #1 0x00000099a3544fb8 in bfd_elf64_swap_reloca_out () #2 0x00000099a353e644 in ?? () Backtrace stopped: previous frame identical to this frame (corrupt stack?) (gdb) anyway, all of this smells like an issue in our ld. -- wbr, Kirill
