https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67214
--- Comment #2 from Xi Ruoyao <ryxi at stu dot xidian.edu.cn> --- Created attachment 40946 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40946&action=edit patch for this PR Since GCC 7 is in stage 4, this patch will be committed in GCC 8 stage 1.
