http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45586
--- Comment #86 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch>
2012-09-30 12:30:43 UTC ---
(In reply to comment #84)
LTO might work for many codes, as using allocatables in derived types was not
standard Fortran90 (IIRC) and appears needed to trigger the bug. Anyway, since
most people will use released versions of gcc, this checking error will be
hidden behind --enable-checking=release. Only very few people will be able to
locate and in particular reduce wrong code generation that only happens with
LTO, so I wouldn't expect bug reports for actual wrong code generation very
quickly.
Meanwhile a shorter testcase for 4.8, using gfortran -flto -O0.
TYPE t
REAL, DIMENSION(:), ALLOCATABLE :: r
END TYPE t
TYPE t_p
TYPE(t), POINTER :: d_t
END TYPE t_p
REAL, DIMENSION(:), POINTER :: d
TYPE(t_p) :: x
d=>x%d_t%r
END
