https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61763
Bug ID: 61763 Summary: [4.9 Regression] gcc-4.9.0 "Bootstrap comparison failure!" Product: gcc Version: 4.9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap Assignee: unassigned at gcc dot gnu.org Reporter: dougmencken at gmail dot com I tried to bootstrap gcc-4.9.0 release on OS X 10.5 (darwin9). My host compiler is currently gcc-4.8.3. That's what I've got: make "DESTDIR=" "RPATH_ENVVAR=DYLD_LIBRARY_PATH" "TARGET_SUBDIR=powerpc-unknown-darwin" "bindir=/usr/bin" "datadir=/usr/share" "exec_prefix=/usr" "includedir=/usr/include" "datarootdir=/usr/share" "docdir=/usr/share/doc/" "infodir=/usr/share/info" "pdfdir=/usr/share/doc/" "htmldir=/usr/share/doc/" "libdir=/usr/lib" "libexecdir=/usr/libexec" "lispdir=" "localstatedir=/usr/var" "mandir=/usr/share/man" "oldincludedir=/usr/include" "prefix=/usr" "sbindir=/usr/sbin" "sharedstatedir=/usr/com" "sysconfdir=/etc" "tooldir=/usr/powerpc-unknown-darwin" "build_tooldir=/usr/powerpc-unknown-darwin" "target_alias=powerpc-unknown-darwin" "AWK=awk" "BISON=bison" "CC_FOR_BUILD=powerpc-unknown-darwin-gcc" "CFLAGS_FOR_BUILD=-O3" "CXX_FOR_BUILD=powerpc-unknown-darwin-g++" "EXPECT=expect" "FLEX=flex" "INSTALL=/usr/bin/install -c" "INSTALL_DATA=/usr/bin/install -c -m 644" "INSTALL_PROGRAM=/usr/bin/install -c" "INSTALL_SCRIPT=/usr/bin/install -c" "LDFLAGS_FOR_BUILD=" "LEX=flex" "M4=gm4" "MAKE=make" "RUNTEST=runtest" "RUNTESTFLAGS=" "SED=/usr/bin/sed" "SHELL=/bin/sh" "YACC=bison -y" "`echo 'ADAFLAGS=' | sed -e s'/[^=][^=]*=$/XFOO=/'`" "ADA_CFLAGS=" "AR_FLAGS=rc" "`echo 'BOOT_ADAFLAGS=-gnatpg' | sed -e s'/[^=][^=]*=$/XFOO=/'`" "BOOT_CFLAGS=-O3 -mdynamic-no-pic" "BOOT_LDFLAGS=" "CFLAGS=-O3" "CXXFLAGS=-O3" "LDFLAGS=" "LIBCFLAGS=-O3" "LIBCXXFLAGS=-O3 -fno-implicit-templates" "STAGE1_CHECKING=--enable-checking=yes" "STAGE1_LANGUAGES=c,c++" "GNATBIND=no" "GNATMAKE=no" "AR_FOR_TARGET=ar" "AS_FOR_TARGET=as" "CC_FOR_TARGET=/Volumes/hfsplushd/Development/gcc-toolchain/_gcc_build/./gcc/xgcc -B/Volumes/hfsplushd/Development/gcc-toolchain/_gcc_build/./gcc/" "CFLAGS_FOR_TARGET=-O3" "CPPFLAGS_FOR_TARGET=" "CXXFLAGS_FOR_TARGET=-O3" "DLLTOOL_FOR_TARGET=dlltool" "FLAGS_FOR_TARGET=-B/usr/powerpc-unknown-darwin/bin/ -B/usr/powerpc-unknown-darwin/lib/ -isystem /usr/powerpc-unknown-darwin/include -isystem /usr/powerpc-unknown-darwin/sys-include" "GCJ_FOR_TARGET=" "GFORTRAN_FOR_TARGET=" "GOC_FOR_TARGET=" "GOCFLAGS_FOR_TARGET=-O3" "LD_FOR_TARGET=ld" "LIPO_FOR_TARGET=lipo" "LDFLAGS_FOR_TARGET=" "LIBCFLAGS_FOR_TARGET=-O3" "LIBCXXFLAGS_FOR_TARGET=-O3 -fno-implicit-templates" "NM_FOR_TARGET=nm" "OBJDUMP_FOR_TARGET=objdump" "RANLIB_FOR_TARGET=ranlib" "READELF_FOR_TARGET=readelf" "STRIP_FOR_TARGET=strip" "WINDRES_FOR_TARGET=windres" "WINDMC_FOR_TARGET=windmc" "BUILD_CONFIG=bootstrap-debug" "`echo 'LANGUAGES=' | sed -e s'/[^=][^=]*=$/XFOO=/'`" "LEAN=false" "STAGE1_CFLAGS=-mdynamic-no-pic" "STAGE1_CXXFLAGS=-mdynamic-no-pic" "STAGE1_TFLAGS=" "STAGE2_CFLAGS=-O3 -mdynamic-no-pic -gtoggle" "STAGE2_CXXFLAGS=-O3 -mdynamic-no-pic -gtoggle" "STAGE2_TFLAGS=" "STAGE3_CFLAGS=-O3 -mdynamic-no-pic" "STAGE3_CXXFLAGS=-O3 -mdynamic-no-pic" "STAGE3_TFLAGS=" "STAGE4_CFLAGS=-O3 -mdynamic-no-pic" "STAGE4_CXXFLAGS=-O3 -mdynamic-no-pic" "STAGE4_TFLAGS=" "STAGEprofile_CFLAGS=-O3 -mdynamic-no-pic -gtoggle -fprofile-generate" "STAGEprofile_CXXFLAGS=-O3 -mdynamic-no-pic -gtoggle -fprofile-generate" "STAGEprofile_TFLAGS=" "STAGEfeedback_CFLAGS=-O3 -mdynamic-no-pic -fprofile-use" "STAGEfeedback_CXXFLAGS=-O3 -mdynamic-no-pic -fprofile-use" "STAGEfeedback_TFLAGS=" "CXX_FOR_TARGET= $r/./gcc/xg++ -B$r/./gcc/ -nostdinc++ `if test -f $r/powerpc-unknown-darwin/libstdc++-v3/scripts/testsuite_flags; then /bin/sh $r/powerpc-unknown-darwin/libstdc++-v3/scripts/testsuite_flags --build-includes; else echo -funconfigured-libstdc++-v3 ; fi` -L$r/powerpc-unknown-darwin/libstdc++-v3/src -L$r/powerpc-unknown-darwin/libstdc++-v3/src/.libs -L$r/powerpc-unknown-darwin/libstdc++-v3/libsupc++/.libs" "TFLAGS=" "CONFIG_SHELL=/bin/sh" "MAKEINFO=makeinfo --split-size=5000000 --split-size=5000000" compare rm -f stage_current Comparing stages 2 and 3 warning: gcc/cc1-checksum.o differs warning: gcc/cc1obj-checksum.o differs warning: gcc/cc1objplus-checksum.o differs warning: gcc/cc1plus-checksum.o differs Bootstrap comparison failure! gcc/tree-loop-distribution.o differs make[2]: *** [compare] Error 1 make[1]: *** [stage3-bubble] Error 2 make: *** [all] Error 2 gcc-4.8.3 bootstraps perfectly (both with -O2 and -O3) on my side.