[Bug lto/69655] libgomp lto failures: segfault in cgraph_node::mark_force_output

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69655

vries at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-02-03
     Ever confirmed|0                           |1

--- Comment #1 from vries at gcc dot gnu.org ---
Confirmed. Remarked before by Ilya at
https://gcc.gnu.org/ml/gcc-patches/2016-01/msg01870.html:
...
This doesn't work when there is more than one LTO partition, because only first
partition contains full offload table to maintain correct order, but cgraph and
varpool nodes aren't necessarily created for the first partition.  To
reproduce:

$ make check-target-libgomp RUNTESTFLAGS="c.exp=for-*
--target_board=unix/-flto"
FAIL: libgomp.c/for-3.c (internal compiler error)
FAIL: libgomp.c/for-5.c (internal compiler error)
FAIL: libgomp.c/for-6.c (internal compiler error)
$ make check-target-libgomp RUNTESTFLAGS="c++.exp=for-*
--target_board=unix/-flto"
FAIL: libgomp.c++/for-11.C (internal compiler error)
FAIL: libgomp.c++/for-13.C (internal compiler error)
FAIL: libgomp.c++/for-14.C (internal compiler error)
...