https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86718
--- Comment #2 from zhonghao at pku dot org.cn --- My gcc: gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-pc-linux-gnu/9.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc9.0/configure --enable-languages=c,c++ --disable-multilib Thread model: posix gcc version 9.0.0 20180715 (experimental) (GCC)
