https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70949
Bug ID: 70949
Summary: ICE in propagate_necessity, at tree-ssa-dce.c:924
Product: gcc
Version: 6.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: gerhard.steinmetz.fort...@t-online.de
Target Milestone: ---
Compiling with optimization level -Og, -Os, -O1 or higher :
(affects older gfortran versions too)
$ cat z1.f90
program p
type t1
end type
type t2
type(t1), pointer :: q
end type
type(t1), pointer :: a
type(t2) :: c
allocate(a)
c%q => a
print *, 'a', associated(a, f(c))
contains
function f(x) result (z)
type(t2), intent(in) :: x
class(t1), pointer :: z
z => x%q
end
end
$ gfortran-6 -O2 z1.f90
z1.f90:12:0:
print *, 'a', associated(a, f(c))
internal compiler error: in propagate_necessity, at tree-ssa-dce.c:924
