- was trying to compile bc on gentoo - lto1 process didnt finish after over an hour
- i "cat" as many c-files as possible into my.c and used resulting my.i - different flags result in different reaction. a) x86_64-pc-linux-gnu-gcc -c -o my.o my.i -flto x86_64-pc-linux-gnu-gcc -c -o numeric.o numeric.i -flto -fshort-double x86_64-pc-linux-gnu-gcc -o dc my.o numeric.o -flto lto1: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://bugs.gentoo.org/> for instructions. lto-wrapper: /usr/x86_64-pc-linux-gnu/gcc-bin/4.5.1-pre9999/x86_64-pc-linux-gnu-gcc returned 1 exit status collect2: lto-wrapper returned 1 exit status b) x86_64-pc-linux-gnu-gcc -c -o my.o my.i -flto x86_64-pc-linux-gnu-gcc -c -o numeric.o numeric.i -flto -O1 x86_64-pc-linux-gnu-gcc -o dc my.o numeric.o -flto -finline-small-functions ... infinite loop (or taking hours) - x86_64-pc-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/usr/x86_64-pc-linux-gnu/gcc-bin/4.5.1-pre9999/x86_64-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.5.1-pre9999/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /var/tmp/portage/sys-devel/gcc-4.5.1_pre9999/work/gcc-4.5.1-9999/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.5.1-pre9999 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.5.1-pre9999/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.5.1-pre9999 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.5.1-pre9999/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.5.1-pre9999/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.5.1-pre9999/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --disable-fixed-point --with-ppl --with-cloog --enable-nls --without-included-gettext --with-system-zlib --disable-checking --disable-werror --enable-secureplt --enable-multilib --enable-libmudflap --disable-libssp --enable-libgomp --enable-cld --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.5.1-pre9999/python --disable-libgcj --enable-languages=c,c++,fortran --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --with-bugurl=http://bugs.gentoo.org/ --with-pkgversion='Gentoo SVN' --enable-lto --disable-checking Thread model: posix gcc version 4.5.1-pre9999 20100417 (prerelease) rev. 158475 (Gentoo SVN) -- Summary: lto crash and/or infinite loop Product: gcc Version: 4.5.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: lto AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: baronchaos at ymail dot com GCC build triplet: x86_64-pc-linux-gnu GCC host triplet: x86_64-pc-linux-gnu GCC target triplet: x86_64-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43786
