[Bug binutils/27206] .symver overrides .weak

[i at maskray dot me]

https://sourceware.org/bugzilla/show_bug.cgi?id=27206

Fangrui Song <i at maskray dot me> changed:

           What    |Removed                     |Added
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                 CC|                            |i at maskray dot me

--- Comment #5 from Fangrui Song <i at maskray dot me> ---
#c0 should be flagged. ld errors for an undefined versioned symbol.

If a versioned symbol is defined, it requires a version node defined in a
version script
(unless not -shared).

Whether as should error for `.symver ... local` + `weak`? It is not clear.
Personally I'd like a directive which just renames the symbol to a @ form,
then such issues would not arise.
https://maskray.me/blog/2020-11-26-all-about-symbol-versioning#assembler-behavior

Tom, how did you notice .symver ... local and start to use it?

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