[PATCH] Avoid .symver on common symbols [BZ #21666]

[H.J. Lu]

On Wed, Jul 12, 2017 at 9:56 AM, Szabolcs Nagy <szabolcs.nagy@arm.com> wrote:
> On 23/06/17 22:13, Florian Weimer wrote:
>> On 06/23/2017 06:26 PM, H.J. Lu wrote:
>>
>>>> Does this result in a visible difference for applications?  If yes,
>>>> please file a bug for this and reference it in the ChangeLog and commit
>>>> message.
>>>
>>> It will be very hard to tell since these symbols were exported from libc.so
>>> by accident and we only keep them in libc.so for backward binary compatibility.
>>> Application can no longer reference them from libc.so.
>>
>> Ah, it's the old <regexp.h> interface, and the symbols were exported
>> deliberately.  We apparently do not have any tests for it.
>>
>>> Here is the updated patch.  OK for master?
>>
>> Yes, please.  Thanks.
>>
>
> i think this should be ok for backporting too
> since without it old releases cannot be built
> with new binutils.
>

I have ported it to hjl/pr21120/2.25 branch.  I also backported 2 patches for
GCC 7. See:

https://sourceware.org/git/?p=glibc.git;a=shortlog;h=refs/heads/hjl/pr21120/2.25



-- 
H.J.