.bss section header

The one deviation from the normal rule in the section header table is the entry for uninitialized data in a .bss section. A .bss section has a size and symbols that refer to it, and symbols that are defined in it. At the same time, a .bss section has no relocation entries, no line number entries, and no data. Therefore, a .bss section has an entry in the section header table but occupies no space elsewhere in the file. In this case, the number of relocation and line number entries, as well as all file pointers in a .bss section header, are 0. The same is true of the STYP_NOLOAD and STYP_DSECT sections.