https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87665
--- Comment #3 from Jan Christoph Uhde <linux at obiwahn dot org> --- ยป g++-head -v Using built-in specs. COLLECT_GCC=g++-head COLLECT_LTO_WRAPPER=/bal/gcc_trunk_install/bin/../libexec/gcc/x86_64-pc-linux-gnu/9.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc_trunk/configure --prefix=/bla/gcc_trunk_install --program-suffix=-head --disable-multilib Thread model: posix gcc version 9.0.0 20181020 (experimental) (GCC)