[Bug bootstrap/83284] bootstrap comparison failure in libiberty/stack-limit.o

["egallager at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83284

--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
Created attachment 42796
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42796&action=edit
cmp -bl stage2-libiberty/stack-limit.o stage3-libiberty/stack-limit.o

(In reply to Richard Biener from comment #1)
> What's your host compiler?  Which section is the difference in?

Host compiler info: 

/usr/local/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/usr/local/bin/gcc
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/i386-apple-darwin10.8.0/8.0.0/lto-wrapper
Target: i386-apple-darwin10.8.0
Configured with: ../configure --disable-werror --disable-werror-always
--enable-languages=c,c++,objc,obj-c++,lto --enable-stage1-checking=release,rtl
-C --with-system-libunwind --enable-secureplt --enable-frame-pointer
--enable-debug --without-isl --disable-host-shared --enable-maintainer-mode
--disable-default-pie --with-ld64 --without-pic --enable-target-optspace
--disable-nls --with-system-zlib --with-libiconv-prefix=/opt/local
--with-gmp=/opt/local --with-mpfr=/opt/local --with-mpc=/opt/local --enable-lto
--enable-libstcxx-time --with-build-config=bootstrap-debug
--with-as=/opt/local/bin/as --with-ld=/opt/local/bin/ld
--with-ar=/opt/local/bin/ar --enable-objc-gc --enable-libada --enable-libssp
CC='/usr/bin/gcc-4.2 -arch i386 -arch x86_64' CXX='/usr/bin/g++-4.2 -arch
x86_64' AR_FOR_TARGET=/opt/local/bin/ar AS_FOR_TARGET=/opt/local/bin/as
LD_FOR_TARGET=/opt/local/bin/ld NM_FOR_TARGET=/opt/local/bin/nm
RANLIB_FOR_TARGET=/opt/local/bin/ranlib STRIP_FOR_TARGET=/opt/local/bin/strip
OTOOL=/opt/local/bin/otool OTOOL64=/opt/local/bin/otool
AUTOCONF=/opt/local/bin/autoconf264 AUTOHEADER=/opt/local/bin/autoheader264
AUTOM4TE=/opt/local/bin/autom4te264 AUTORECONF=/opt/local/bin/autoreconf264
AUTOSCAN=/opt/local/bin/autoscan264 AUTOUPDATE=/opt/local/bin/autoupdate264
IFNAMES=/opt/local/bin/ifnames264 ACLOCAL=/sw/bin/aclocal-1.11
PERL=/opt/local/bin/perl CFLAGS='-pipe -g -Os' CXXFLAGS='-pipe -g -Os
-fcheck-new' CPP='/usr/bin/gcc-4.2 -E' CXXCPP='/usr/bin/g++-4.2 -E'
M4=/opt/local/bin/gm4 : (reconfigured) ../configure --disable-werror
--disable-werror-always --enable-languages=c,c++,objc,obj-c++,lto
--enable-stage1-checking=release,rtl -C --with-system-libunwind
--enable-secureplt --enable-frame-pointer --enable-debug --without-isl
--disable-host-shared --enable-maintainer-mode --disable-default-pie
--with-ld64 --without-pic --enable-target-optspace --disable-nls
--with-system-zlib --with-libiconv-prefix=/opt/local --with-gmp=/opt/local
--with-mpfr=/opt/local --with-mpc=/opt/local --enable-lto
--with-build-config=bootstrap-debug --with-as=/opt/local/bin/as
--with-ld=/opt/local/bin/ld --with-ar=/opt/local/bin/ar --enable-objc-gc
--enable-libada --enable-libssp --disable-libsanitizer CC=/usr/local/bin/gcc
CXX=/usr/local/bin/g++ AR_FOR_TARGET=/opt/local/bin/ar
AS_FOR_TARGET=/opt/local/bin/as LD_FOR_TARGET=/opt/local/bin/ld
NM_FOR_TARGET=/opt/local/bin/nm RANLIB_FOR_TARGET=/opt/local/bin/ranlib
STRIP_FOR_TARGET=/opt/local/bin/strip OTOOL=/opt/local/bin/otool
OTOOL64=/opt/local/bin/otool AUTOCONF=/opt/local/bin/autoconf264
AUTOHEADER=/opt/local/bin/autoheader264 AUTOM4TE=/opt/local/bin/autom4te264
AUTORECONF=/opt/local/bin/autoreconf264 AUTOSCAN=/opt/local/bin/autoscan264
AUTOUPDATE=/opt/local/bin/autoupdate264 IFNAMES=/opt/local/bin/ifnames264
ACLOCAL=/sw/bin/aclocal-1.11 PERL=/opt/local/bin/perl M4=/opt/local/bin/gm4
Thread model: posix
gcc version 8.0.0 20171110 (experimental) (GCC)

Not quite sure how to tell which section the difference is in but I'm attaching
the full cmp -bl output.