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

[Szabolcs Nagy]

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.