llvm dev - May 2020 - LLD : __start_ and __end_ symbols for orphan sections

lld does not seem to create the __start and __end symbols for orphan sections.
I would like to keep my linker script as generic as possible so how can I tell
lld to create these symbols without having to add them in the linker script?

Thanks
A
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On 2020-05-28, Moshtaghi, Alireza via llvm-dev wrote:
>lld does not seem to create the __start and __end symbols for orphan
sections.
>I would like to keep my linker script as generic as possible so how can I
tell lld to create these symbols without having to add them in the linker
script?
>
>Thanks
>A
It works for me.

SECTIONS {
   data : { *(data) }
}

.section data,"aw"
.quad __start_orphan
.quad __stop_orphan

.section orphan,"aw"
.quad __start_data
.quad __stop_data


Can you give an example __start_ or __end_ symbols are not defined for orphan
sections?

You are right it creates them but sets the protected flag (STV_PROTECTED) which
seems to be the cause of my problem.
How can I tell it to set the flag as STV_DEFAULT?

Thanks
A

On 5/28/20, 11:30 PM, "Fangrui Song" <maskray at google.com>
wrote:

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    On 2020-05-28, Moshtaghi, Alireza via llvm-dev wrote:
    >lld does not seem to create the __start and __end symbols for orphan
sections.
    >I would like to keep my linker script as generic as possible so how can
I tell lld to create these symbols without having to add them in the linker
script?
    >
    >Thanks
    >A

    It works for me.

    SECTIONS {
       data : { *(data) }
    }

    .section data,"aw"
    .quad __start_orphan
    .quad __stop_orphan

    .section orphan,"aw"
    .quad __start_data
    .quad __stop_data


    Can you give an example __start_ or __end_ symbols are not defined for
orphan sections?