https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70001
Bug ID: 70001 Summary: Infinity compilation time Product: gcc Version: 5.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: cdkrot at yandex dot ru Target Milestone: --- Created attachment 37814 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37814&action=edit (Sample code to produce bug). I've found the program which compilation time is infinity (at least > 30 min). This code contains few std::array<std::complex>'s of big size, and i believe, that this is the cause of the problem, because after replacing std::array to C-style arrays problem is gone. This code is attached, the process of compilation looks like this: * Compiler isn't printing anything for few minutes. * Slowly, the compilation errors arise (this code contains few minor typos) * Compiler sleeps for infinity. I was using following compilation line: "g++ -Wall -Wextra -std=c++11 file.cpp -o file" Running with "time g++ ..." shows, that most part of this time the compiler is sleeping. E.g: * Total time (24min) // killed process after this * Usr time (< 0.1s) * Sys time (< 0.1s) G++ -v: Using built-in specs. COLLECT_GCC=/usr/x86_64-pc-linux-gnu/gcc-bin/5.3.0/g++ COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/5.3.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /var/tmp/portage/sys-devel/gcc-5.3.0/work/gcc-5.3.0/configure --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/5.3.0 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/5.3.0/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/5.3.0 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/5.3.0/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/5.3.0/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/5.3.0/include/g++-v5 --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/5.3.0/python --enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt --disable-werror --with-system-zlib --enable-nls --without-included-gettext --enable-checking=release --with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo 5.3.0 p1.0, pie-0.6.5' --enable-libstdcxx-time --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --enable-multilib --with-multilib-list=m32,m64 --disable-altivec --disable-fixed-point --enable-targets=all --disable-libgcj --enable-libgomp --disable-libmudflap --disable-libssp --disable-libcilkrts --enable-lto --without-isl --enable-libsanitizer Thread model: posix gcc version 5.3.0 (Gentoo 5.3.0 p1.0, pie-0.6.5)