https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414
--- Comment #4 from Matthias Klose <doko at gcc dot gnu.org> --- still seen with r221436 Configured with: -v --with-pkgversion='Ubuntu 5-20150314-1ubuntu11' --with-bugurl='file:///usr/share/doc/gcc-5/README.Bugs' --enable-languages=c,c++,java,go,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-5 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/5 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=c++98 --enable-gnu-unique-object --disable-libquadmath --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-arm64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-arm64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-arm64 --with-arch-directory=arm64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-multiarch --disable-werror --enable-checking=release --build=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu build logs at https://launchpad.net/~doko/+archive/ubuntu/toolchain/+sourcepub/4835737/+listing-archive-extra #0 0x0000000000d3ca70 in num_part_mul(unsigned long, unsigned long) () #1 0x0000000000d3ee44 in _cpp_parse_expr () #2 0x0000000000d3ee44 in _cpp_parse_expr () [...] #675 0x0000000000d3ee44 in _cpp_parse_expr () #676 0x0000000000d3ee44 in _cpp_parse_expr () #677 0x0000000000d3ee44 in _cpp_parse_expr () [...]