Hi all,
the attached patch fixes a 6 regression when the argument of sizeof()
is a pointer to a class object, e.g., when the class object is
intent(out). The patch improves the check if the parameter is a
class object by previously checking whether the argument is the plain
object or a pointer to one and using TREE_OPERAND() once or twice,
respectively.
Bootstraps and regtests ok on x86_64-linux-gnu/f21.
Ok for trunk?
Regards,
Andre
--
Andre Vehreschild * Email: vehre ad gmx dot de
gcc/fortran/ChangeLog:
2015-10-06 Andre Vehreschild <ve...@gcc.gnu.org>
* trans-intrinsic.c (gfc_conv_intrinsic_sizeof): Handle pointer to and
on stack class objects as sizeof parameter.
gcc/testsuite/ChangeLog:
2015-10-06 Andre Vehreschild <ve...@gcc.gnu.org>
* gfortran.dg/sizeof_5.f90: New test.
diff --git a/gcc/fortran/trans-intrinsic.c b/gcc/fortran/trans-intrinsic.c
index 35052be..ac61c09 100644
--- a/gcc/fortran/trans-intrinsic.c
+++ b/gcc/fortran/trans-intrinsic.c
@@ -5937,11 +5937,16 @@ gfc_conv_intrinsic_sizeof (gfc_se *se, gfc_expr *expr)
}
else if (arg->ts.type == BT_CLASS)
{
- /* For deferred length arrays, conv_expr_descriptor returns an
- indirect_ref to the component. */
+ /* Conv_expr_descriptor returns a component_ref to _data component of the
+ class object. The class object may be a non-pointer object, e.g.
+ located on the stack, or a memory location pointed to, e.g. a
+ parameter, i.e., an indirect_ref. */
if (arg->rank < 0
|| (arg->rank > 0 && !VAR_P (argse.expr)
- && GFC_DECL_CLASS (TREE_OPERAND (argse.expr, 0))))
+ && ((INDIRECT_REF_P (TREE_OPERAND (argse.expr, 0))
+ && GFC_DECL_CLASS (TREE_OPERAND (
+ TREE_OPERAND (argse.expr, 0), 0)))
+ || GFC_DECL_CLASS (TREE_OPERAND (argse.expr, 0)))))
byte_size = gfc_class_vtab_size_get (TREE_OPERAND (argse.expr, 0));
else if (arg->rank > 0)
/* The scalarizer added an additional temp. To get the class' vptr
diff --git a/gcc/testsuite/gfortran.dg/sizeof_5.f90 b/gcc/testsuite/gfortran.dg/sizeof_5.f90
new file mode 100644
index 0000000..0e1496a
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/sizeof_5.f90
@@ -0,0 +1,15 @@
+! { dg-do compile }
+!
+! PR fortran/65889
+!
+!
+module m
+ type n
+ end type n
+contains
+ subroutine g(ns)
+ class(n), intent(out), allocatable, dimension(:) :: ns
+ class(n), allocatable, dimension(:) :: tmp
+ write (0,*) sizeof(ns), sizeof(tmp)
+ end subroutine g
+end module m
