(
GCC: (Ubuntu 4.8.4-2ubuntu1~14.04.3) 4.8.4
.symtab .strtab .shstrtab .note.gnu.build-id .text .eh_frame_hdr .eh_frame .data .bss .comment
bss_data.c __bss_size bss_data _start __bss_start main _edata _end