https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82092
--- Comment #19 from zf <zfefm at gmx dot de> ---
With OS 10.9.5 I run in the very same error with gcc 8.2.0 as with 8.1.0:
/bin/sh ../../../libgcc/../mkinstalldirs .
/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/xgcc
-B/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/bin/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/lib/ -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/include -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/sys-include -g -O2 -m32 -O2 -g
-O2 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem
./include -mmacosx-version-min=10.5 -pipe -fno-common -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -mmacosx-version-min=10.5 -pipe
-fno-common -I. -I. -I../../.././gcc -I../../../../libgcc
-I../../../../libgcc/. -I../../../../libgcc/../gcc
-I../../../../libgcc/../include -DHAVE_CC_TLS -DUSE_EMUTLS -o _udiv_w_sdiv.o
-MT _udiv_w_sdiv.o -MD -MP -MF _udiv_w_sdiv.dep -DL_udiv_w_sdiv -c
../../../../libgcc/libgcc2.c \
-fexceptions -fnon-call-exceptions -fvisibility=hidden -DHIDE_EXPORTS
/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/xgcc
-B/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/bin/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/lib/ -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/include -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/sys-include -O2 -g -O2
-DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem
./include -mmacosx-version-min=10.5 -pipe -fno-common -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -dynamiclib -nodefaultlibs
-install_name /usr/local/gcc-8.2/lib/libgcc_s.1.dylib -single_module -o
./libgcc_s.dylib -Wl,-exported_symbols_list,libgcc.map -compatibility_version 1
-current_version 1.0 -g -O2 -B./ _muldi3_s.o _negdi2_s.o _lshrdi3_s.o
_ashldi3_s.o _ashrdi3_s.o _cmpdi2_s.o _ucmpdi2_s.o _clear_cache_s.o
_trampoline_s.o __main_s.o _absvsi2_s.o _absvdi2_s.o _addvsi3_s.o _addvdi3_s.o
_subvsi3_s.o _subvdi3_s.o _mulvsi3_s.o _mulvdi3_s.o _negvsi2_s.o _negvdi2_s.o
_ctors_s.o _ffssi2_s.o _ffsdi2_s.o _clz_s.o _clzsi2_s.o _clzdi2_s.o _ctzsi2_s.o
_ctzdi2_s.o _popcount_tab_s.o _popcountsi2_s.o _popcountdi2_s.o _paritysi2_s.o
_paritydi2_s.o _powisf2_s.o _powidf2_s.o _powixf2_s.o _powitf2_s.o _mulhc3_s.o
_mulsc3_s.o _muldc3_s.o _mulxc3_s.o _multc3_s.o _divhc3_s.o _divsc3_s.o
_divdc3_s.o _divxc3_s.o _divtc3_s.o _bswapsi2_s.o _bswapdi2_s.o _clrsbsi2_s.o
_clrsbdi2_s.o _fixunssfsi_s.o _fixunsdfsi_s.o _fixunsxfsi_s.o _fixsfdi_s.o
_fixdfdi_s.o _fixxfdi_s.o _fixunssfdi_s.o _fixunsdfdi_s.o _fixunsxfdi_s.o
_floatdisf_s.o _floatdidf_s.o _floatdixf_s.o _floatundisf_s.o _floatundidf_s.o
_floatundixf_s.o _fixsfti_s.o _fixdfti_s.o _fixxfti_s.o _fixtfti_s.o
_fixunssfti_s.o _fixunsdfti_s.o _fixunsxfti_s.o _fixunstfti_s.o _floattisf_s.o
_floattidf_s.o _floattixf_s.o _floattitf_s.o _floatuntisf_s.o _floatuntidf_s.o
_floatuntixf_s.o _floatuntitf_s.o _divdi3_s.o _moddi3_s.o _divmoddi4_s.o
_udivdi3_s.o _umoddi3_s.o _udivmoddi4_s.o _udiv_w_sdiv_s.o darwin-64_s.o
cpuinfo_s.o sfp-exceptions_s.o addtf3_s.o divtf3_s.o eqtf2_s.o getf2_s.o
letf2_s.o multf3_s.o negtf2_s.o subtf3_s.o unordtf2_s.o fixtfsi_s.o
fixunstfsi_s.o floatsitf_s.o floatunsitf_s.o fixtfdi_s.o fixunstfdi_s.o
floatditf_s.o floatunditf_s.o fixtfti_s.o fixunstfti_s.o floattitf_s.o
floatuntitf_s.o extendsftf2_s.o extenddftf2_s.o extendxftf2_s.o trunctfsf2_s.o
trunctfdf2_s.o trunctfxf2_s.o enable-execute-stack_s.o unwind-dw2_s.o
unwind-dw2-fde-darwin_s.o unwind-sjlj_s.o unwind-c_s.o emutls_s.o libgcc.a -lc
/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/xgcc
-B/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/bin/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/lib/ -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/include -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/sys-include -g -O2 -m32 -O2 -g
-O2 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem
./include -mmacosx-version-min=10.5 -pipe -fno-common -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -mmacosx-version-min=10.5 -pipe
-fno-common -I. -I. -I../../.././gcc -I../../../../libgcc
-I../../../../libgcc/. -I../../../../libgcc/../gcc
-I../../../../libgcc/../include -DHAVE_CC_TLS -DUSE_EMUTLS -o darwin-64.o -MT
darwin-64.o -MD -MP -MF darwin-64.dep -c ../../../../libgcc/config/darwin-64.c
-fvisibility=hidden -DHIDE_EXPORTS
/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/xgcc
-B/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/bin/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/lib/ -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/include -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/sys-include -g -O2 -m32 -O2 -g
-O2 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem
./include -mmacosx-version-min=10.5 -pipe -fno-common -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -mmacosx-version-min=10.5 -pipe
-fno-common -I. -I. -I../../.././gcc -I../../../../libgcc
-I../../../../libgcc/. -I../../../../libgcc/../gcc
-I../../../../libgcc/../include -DHAVE_CC_TLS -DUSE_EMUTLS -o cpuinfo.o -MT
cpuinfo.o -MD -MP -MF cpuinfo.dep -c ../../../../libgcc/config/i386/cpuinfo.c
-fvisibility=hidden -DHIDE_EXPORTS
/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/xgcc
-B/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/bin/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/lib/ -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/include -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/sys-include -g -O2 -m32 -O2 -g
-O2 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem
./include -mmacosx-version-min=10.5 -pipe -fno-common -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -mmacosx-version-min=10.5 -pipe
-fno-common -I. -I. -I../../.././gcc -I../../../../libgcc
-I../../../../libgcc/. -I../../../../libgcc/../gcc
-I../../../../libgcc/../include -DHAVE_CC_TLS -DUSE_EMUTLS -o tf-signs.o -MT
tf-signs.o -MD -MP -MF tf-signs.dep -c
../../../../libgcc/config/i386/32/tf-signs.c -fvisibility=hidden -DHIDE_EXPORTS
/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/xgcc
-B/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/bin/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/lib/ -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/include -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/sys-include -g -O2 -m32 -O2 -g
-O2 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem
./include -mmacosx-version-min=10.5 -pipe -fno-common -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -mmacosx-version-min=10.5 -pipe
-fno-common -I. -I. -I../../.././gcc -I../../../../libgcc
-I../../../../libgcc/. -I../../../../libgcc/../gcc
-I../../../../libgcc/../include -DHAVE_CC_TLS -DUSE_EMUTLS -o sfp-exceptions.o
-MT sfp-exceptions.o -MD -MP -MF sfp-exceptions.dep -c
../../../../libgcc/config/i386/sfp-exceptions.c -fvisibility=hidden
-DHIDE_EXPORTS
/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/xgcc
-B/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/bin/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/lib/ -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/include -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/sys-include -g -O2 -m32 -O2 -g
-O2 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem
./include -mmacosx-version-min=10.5 -pipe -fno-common -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -mmacosx-version-min=10.5 -pipe
-fno-common -I. -I. -I../../.././gcc -I../../../../libgcc
-I../../../../libgcc/. -I../../../../libgcc/../gcc
-I../../../../libgcc/../include -DHAVE_CC_TLS -DUSE_EMUTLS
-Wno-missing-prototypes -Wno-type-limits -o addtf3.o -MT addtf3.o -MD -MP -MF
addtf3.dep -c ../../../../libgcc/soft-fp/addtf3.c -fvisibility=hidden
-DHIDE_EXPORTS
/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/xgcc
-B/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/bin/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/lib/ -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/include -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/sys-include -g -O2 -m32 -O2 -g
-O2 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem
./include -mmacosx-version-min=10.5 -pipe -fno-common -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -mmacosx-version-min=10.5 -pipe
-fno-common -I. -I. -I../../.././gcc -I../../../../libgcc
-I../../../../libgcc/. -I../../../../libgcc/../gcc
-I../../../../libgcc/../include -DHAVE_CC_TLS -DUSE_EMUTLS
-Wno-missing-prototypes -Wno-type-limits -o divtf3.o -MT divtf3.o -MD -MP -MF
divtf3.dep -c ../../../../libgcc/soft-fp/divtf3.c -fvisibility=hidden
-DHIDE_EXPORTS
0 0x10e44e0e7 __assert_rtn + 144
1 0x10e473759
mach_o::relocatable::Parser<x86_64>::parse(mach_o::relocatable::ParserOptions
const&) + 3213
2 0x10e4589e2 mach_o::relocatable::Parser<x86_64>::parse(unsigned char
const*, unsigned long long, char const*, long, ld::File::Ordinal,
mach_o::relocatable::ParserOptions const&) + 374
3 0x10e498303 ld::tool::InputFiles::makeFile(Options::FileInfo const&, bool)
+ 651
4 0x10e499ff9 ld::tool::InputFiles::parseWorkerThread() + 271
5 0x7fff8df5d899 _pthread_body + 138
6 0x7fff8df5d72a _pthread_struct_init + 0
A linker snapshot was created at:
/tmp/libgcc_s.dylib-2018-06-26-145212.ld-snapshot
ld: Assertion failed: (cfiStartsArray[i] != cfiStartsArray[i-1]), function
parse, file
/SourceCache/ld64/ld64-236.4/src/ld/parsers/macho_relocatable_file.cpp, line
1685.
collect2: error: ld returned 1 exit status
/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/xgcc
-B/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/bin/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/lib/ -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/include -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/sys-include -g -O2 -m32 -O2 -g
-O2 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem
./include -mmacosx-version-min=10.5 -pipe -fno-common -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -mmacosx-version-min=10.5 -pipe
-fno-common -I. -I. -I../../.././gcc -I../../../../libgcc
-I../../../../libgcc/. -I../../../../libgcc/../gcc
-I../../../../libgcc/../include -DHAVE_CC_TLS -DUSE_EMUTLS
-Wno-missing-prototypes -Wno-type-limits -o eqtf2.o -MT eqtf2.o -MD -MP -MF
eqtf2.dep -c ../../../../libgcc/soft-fp/eqtf2.c -fvisibility=hidden
-DHIDE_EXPORTS
make[3]: *** [libgcc_s.dylib] Error 1
