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[Bug gas/25381] Support section flag 'o' (SHF_LINK_ORDER)


From: i at maskray dot me
Subject: [Bug gas/25381] Support section flag 'o' (SHF_LINK_ORDER)
Date: Sun, 02 Feb 2020 03:29:05 +0000

https://sourceware.org/bugzilla/show_bug.cgi?id=25381

--- Comment #4 from Fangrui Song <i at maskray dot me> ---
> .section       __patchable_function_entries,"awo",@progbits,foo
> .section       __patchable_function_entries,"awo",@progbits,bar

clang's integrated assembler uses either section_name or the pair
(section_name,unique id) to differentiate sections.

If two sections just have different flags (SHF_LINK_ORDER in this example),
they are not considered different.

Thus, for the example, `,unique,0` and `,unique,1` are still needed.

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