[PATCH] Add baseline symbols for riscv64-linux-gnu

[Jonathan Wakely]

On 16/07/18 16:37 -0700, Jim Wilson wrote:
>On Mon, Jul 16, 2018 at 3:24 AM, Andreas Schwab <schwab@suse.de> wrote:
>>         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: New file.
>>
>
>I'm not familiar with the details of these baseline symbol files.
>
>When I try running "make new-abi-baseline" on my Fedora riscv64-linux
>system using top of tree, I get 35 extra lines in the
>baseline_symbols.txt.new file.  It looks like 33 of them are because I
>have
>OBJECT:0:GLIBCXX_3.4.26
>and yours only goes up to 3.4.25.  The other two are TLS entries.
>> TLS:8:_ZSt11__once_call@@GLIBCXX_3.4.11
>> TLS:8:_ZSt15__once_callable@@GLIBCXX_3.4.11
>Not sure why there are no TLS entries in your file, and two in mine.

I don't know about RISC-V but for other GNU/Linux targets those
symbols are not always present, so should not be listed in the
baseline (otherwise when they're absent you get errors about missing
symbols).

>The testsuite does pass with a message about 33 added symbols and 2
>undesignated symbols which are the TLS symbols.

The added symbols all have the new GLIBCXX_3.4.26 symbol version, so
are allowed as additions on top of the GLIBCXX_3.4.25 baseline defined
by the baseline_symbols.txt file.

The 3.4.26 version is still "open" and having new symbols added to it,
so it makes sense for the baseline to only go up to 3.4.25 for now.