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Oracle® Solaris 11.4 Linkers and Libraries Guide

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Updated: March 2019
 
 

COMDAT Section

COMDAT sections are uniquely identified by their section name (sh_name). If the link-editor encounters multiple sections of type SHT_SUNW_COMDAT, with the same section name, the first section is retained and the rest discarded. Any relocations that are applied to a discarded SHT_SUNW_COMDAT section are ignored. Any symbols that are defined in a discarded section are removed.

Additionally, the link-editor supports the section naming convention that is used for section reordering when the compiler is invoked with the –xF option. If a function is placed in a SHT_SUNW_COMDAT section that is named .sectname%funcname, the final SHT_SUNW_COMDAT sections that are retained are coalesced into the section that is named .sectname. This method can be used to place SHT_SUNW_COMDAT sections into the .text, .data, or any other section as their final destination.