[Bug middle-end/45172] [4.6 Regression] internal compiler error: verify_flow_info failed

[jakub at gcc dot gnu dot org]

------- Comment #4 from jakub at gcc dot gnu dot org  2010-08-19 13:56 -------
Well, the edge from the block ending with _gfortran_runtime_error_at is an EH
edge, not normal edge.

Not sure what exactly Fortran needs -fexceptions for currently, one reason
could be pthread_cancel, but at least with OpenMP pthread_cancel isn't going to
do very nice things anyway.

The two (28) phi args seem to be because the successor block of the empty EH
block that is being removed in ehcleanup already had another incoming edge from
that block, and ehcleanup doesn't expect that.  Not sure if that is a bug from
before ehcleanup, or if ehcleanup should test for that case and either disallow
the optimization, or resolve it somehow else.


-- 

jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rth at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45172