Upgrading from 4.4.2 to 4.4.3, gcc now segfaults when compiling my file. I've narrowed both the command line and the cpp file (30 lines, visible at the end of the *.ii attached). Most of the included code is from eigen (http://eigen.tuxfamily.org/) and is publicly visible on http://bitbucket.org/eigen/eigen
When compiled with -O2 or -O3 the segfaults is triggered, without -O option, the file compiles fine. The complete line i use is: g++ -c -O3 -I../../eigen2-tip -o ice.o ice.cpp -save-temps The output is: ---------------------------------------------------------------------------- In file included from ../../eigen2-tip/Eigen/Core:178, from ../../eigen2-tip/unsupported/Eigen/NonLinearOptimization:29, from ice.cpp:3: ../../eigen2-tip/Eigen/src/Core/DenseStorageBase.h: In member function Eigen::LevenbergMarquardtSpace::Status Eigen::LevenbergMarquardt<FunctorType, Scalar>::minimizeOneStep(Eigen::Matrix<Scalar, 33331, 1, 0, 33331, 1>&, int) [with FunctorType = myFunctor, Scalar = double]: ../../eigen2-tip/Eigen/src/Core/DenseStorageBase.h:516: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://bugs.gentoo.org/> for instructions. ---------------------------------------------------------------------------- The output of gcc -v is (i'm using gentoo) : ---------------------------------------------------------------------------- Using built-in specs. Target: x86_64-pc-linux-gnu Configured with: /usr/data/tmp/portage/sys-devel/gcc-4.4.3/work/gcc-4.4.3/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.4.3 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.3 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.3/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.3/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --disable-fixed-point --without-ppl --without-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/4.4.3/python --disable-libgcj --enable-languages=c,c++ --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --with-bugurl=http://bugs.gentoo.org/ --with-pkgversion='Gentoo 4.4.3 p1.0' Thread model: posix gcc version 4.4.3 (Gentoo 4.4.3 p1.0) ---------------------------------------------------------------------------- -- Summary: ICE on template code with -O2 or -O3, regression from 4.4.2 Product: gcc Version: 4.4.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: orzel at freehackers dot org 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=43024