Hello world,
Steve had analyzed the bug and provided a patch in the PR;
I modified the patch stylistically and committed it as
obvious after regression-testing (r253123).
Thanks Steve!
Since this is a regression, I will backport soon.
Regards
Thomas
2017-09-24 Thomas Koenig <[email protected]>
Steven G. Kargl <[email protected]>
PR fortran/80118
* expr.c (gfc_get_full_arrayspec_from_expr): If there is
no symtree, set array spec to NULL.
2017-09-24 Thomas Koenig <[email protected]>
Steven G. Kargl <[email protected]>
PR fortran/80118
* gfortran.dg/zero_sized_7.f90: New test.
! { dg-do compile }
! PR 80118 - this used to ICE
! Original test case by Marco Restelli
module m
implicit none
integer, parameter :: not_empty(1) = 0
integer, parameter :: empty1(0) = (/integer :: /)
integer, parameter :: empty2(0) = 0
contains
subroutine sub(v)
integer, allocatable, intent(out) :: v(:)
v = 2*empty2 ! internal compiler error
end subroutine sub
end module m
Index: expr.c
===================================================================
--- expr.c (Revision 253116)
+++ expr.c (Arbeitskopie)
@@ -4568,7 +4568,11 @@ gfc_get_full_arrayspec_from_expr (gfc_expr *expr)
if (expr->expr_type == EXPR_VARIABLE
|| expr->expr_type == EXPR_CONSTANT)
{
- as = expr->symtree->n.sym->as;
+ if (expr->symtree)
+ as = expr->symtree->n.sym->as;
+ else
+ as = NULL;
+
for (ref = expr->ref; ref; ref = ref->next)
{
switch (ref->type)
