https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89887
--- Comment #2 from vfdff <zhongyunde at huawei dot com> --- Add option -fno-toplevel-reorder for O2, then aucSubFrmType.1820 will also be placed in section data. /opt/buildtools/gcc-7.3.0/bin/gcc dd.c -O2 -S -fno-toplevel-reorder