https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61886
Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2014-07-23
Assignee|unassigned at gcc dot gnu.org |hubicka at gcc dot
gnu.org
Ever confirmed|0 |1
--- Comment #5 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
This is a difficult problem. In early cgraph days GCC code was converted to
assume that there are never duplicated declarations of a given symbol. This is
precisely what glibc does to keep these duplicates flow through the
compilation.
It is a long standing bug that we have such duplicate declarations and that we
do not reject these as an error or fix internaly.
A clear fix would be to make alias from glibc SO for fread_chk and
fread_chk_warn that can be used for those two different calls. But without
changling glibc's API we need to work out how to introduce the alias
internally. We support similar bookeeping for wearkrefs that are "syntactic"
aliases resulting in the same assembler name as their target. I suppose we can
do the same here, but it is ugly - I would much preffer those hacks to not
exist at all.
I will try to prepare patch and see how contained it is.
Honza
