https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89494
--- Comment #7 from Piotr Kubaj <pkubaj at anongoth dot pl> ---
It still crashes (test was done with 7.4.0), but we're getting somewhere.
It crashes at:
libtool: compile:
/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc/xgcc
-shared-libgcc -B/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc
-nostdinc++
-L/usr/local/poudriere/ports/default/lang/gcc7/work/.build/powerpc64-portbld-freebsd12.0/libstdc++-v3/src
-L/usr/local/poudriere/ports/default/lang/gcc7/work/.build/powerpc64-portbld-freebsd12.0/libstdc++-v3/src/.libs
-L/usr/local/poudriere/ports/default/lang/gcc7/work/.build/powerpc64-portbld-freebsd12.0/libstdc++-v3/libsupc++/.libs
-B/usr/local/powerpc64-portbld-freebsd12.0/bin/
-B/usr/local/powerpc64-portbld-freebsd12.0/lib/ -isystem
/usr/local/powerpc64-portbld-freebsd12.0/include -isystem
/usr/local/powerpc64-portbld-freebsd12.0/sys-include
-I/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libstdc++-v3/../libgcc
-I/usr/local/poudriere/ports/default/lang/gcc7/work/.build/powerpc64-portbld-freebsd12.0/libstdc++-v3/include/powerpc64-portbld-freebsd12.0
-I/usr/local/poudriere/ports/default/lang/gcc7/work/.build/powerpc64-portbld-freebsd12.0/libstdc++-v3/include
-I/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libstdc++-v3/libsupc++
-D_GLIBCXX_SHARED -fno-implicit-templates -Wall -Wextra -Wwrite-strings
-Wcast-qual -Wabi -fdiagnostics-show-location=once -ffunction-sections
-fdata-sections -frandom-seed=class_type_info.lo -g -O2 -pipe -DLIBICONV_PLUG
-c
/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libstdc++-v3/libsupc++/class_type_info.cc
-fPIC -DPIC -D_GLIBCXX_SHARED -o class_type_info.o
/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libstdc++-v3/libsupc++/class_type_info.cc:
In member function 'virtual bool
__cxxabiv1::__class_type_info::__do_upcast(const
__cxxabiv1::__class_type_info*, void**) const':
/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libstdc++-v3/libsupc++/class_type_info.cc:45:6:
internal compiler error: Segmentation fault
bool __class_type_info::
^~~~~~~~~~~~~~~~~
Interestingly, I can see -O0 added to flags before:
gmake "AR_FLAGS=rc" "CC_FOR_BUILD=cc"
"CC_FOR_TARGET=/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc/xgcc
-B/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc/" "CFLAGS=-O0"
"CXXFLAGS=-g -O2 -pipe -DLIBICONV_PLUG " "CFLAGS_FOR_BUILD=-O0"
"CFLAGS_FOR_TARGET=-O0" "INSTALL=/usr/bin/install -c" "INSTALL_DATA=install -m
0644" "INSTALL_PROGRAM=install -s -m 555" "INSTALL_SCRIPT=install -m 555"
"LDFLAGS=" "LIBCFLAGS=-O0" "LIBCFLAGS_FOR_TARGET=-O0" "MAKE=gmake"
"MAKEINFO=makeinfo --no-split --split-size=5000000 --split-size=5000000
--split-size=5000000" "SHELL=/bin/sh" "RUNTESTFLAGS=" "exec_prefix=/usr/local"
"infodir=/usr/local/share/info/gcc7" "libdir=/usr/local/lib/gcc7"
"includedir=/usr/local/include" "prefix=/usr/local"
"tooldir=/usr/local/powerpc64-portbld-freebsd12.0"
"gxx_include_dir=/usr/local/lib/gcc7/include/c++/"
"AR=/usr/local/powerpc64-portbld-freebsd12.0/bin/ar"
"AS=/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc/as"
"LD=/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc/collect-ld"
"RANLIB=/usr/local/powerpc64-portbld-freebsd12.0/bin/ranlib"
"NM=/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc/nm"
"NM_FOR_BUILD=" "NM_FOR_TARGET=/usr/local/powerpc64-portbld-freebsd12.0/bin/nm"
"DESTDIR=" "WERROR=" all-recursive
But the failing command is run strictly with -O2. If I just cd to
'/usr/local/poudriere/ports/default/lang/gcc7/work/.build/libiberty' and run it
manually, but change -O2 to -O0, it passes.
I can't find how to change -O level globally.
I currently set BOOT_CFLAGS="-O0" CFLAGS_FOR_TARGET="-O0"
CFLAGS_FOR_BUILD="-O0" STAGE_CFLAGS="-O0" STAGE2_CXXFLAGS="-O0"
STAGE2_CFLAGS="-O0" STAGE1_CXXFLAGS="-O0" STAGE1_CFLAGS="-O0" and it looks like
some files are compiled with -O0, but some commands still use -O2 (like the one
above). How can I set it to add -O0 everywhere?
