[Bug gold/18614] Common symbols with local binding are not allocated by the linker

[c-addison at ti dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18614

--- Comment #2 from Cody Addison <c-addison at ti dot com> ---
The TI compiler tools use common for two main reasons. The first is to allow
the linker to remove unreferenced data on a per symbol basis as opposed to a
per section basis. The second is to allow our customers the flexibility to
place symbols in different memory regions without annotating the source code
itself. Using common provides a lightweight mechanism to provide the same
functionality as placing each symbol in its own section.

I think the gold linker should support this because ELF makes no restrictions
on common symbols being STB_GLOBAL.

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