Hi all,
attached patch takes the _len-component of unlimited polymorphic objects into
account, when source-ALLOCATEing an unlimited polymorphic object. The testcase
for this gcc/testsuite/gfortran.dg/alloc_comp_class_5.f03 with
valgrind/sanitizer. I therefore added no additional testcase.
Bootstraps and regtests ok on x86_64-linux/f25 and as reported in the PR on
32bit-hpux. Ok for trunk (when?)?
Regards,
Andre
--
Andre Vehreschild * Email: vehre ad gmx dot de
gcc/fortran/ChangeLog:
2017-02-04 Andre Vehreschild <ve...@gcc.gnu.org>
PR fortran/78958
* trans-stmt.c (gfc_trans_allocate): Add the multiplying the _len
component of unlimited polymorphic objects when source-allocating.
diff --git a/gcc/fortran/trans-stmt.c b/gcc/fortran/trans-stmt.c
index ad4b737..61e597f 100644
--- a/gcc/fortran/trans-stmt.c
+++ b/gcc/fortran/trans-stmt.c
@@ -6009,14 +6009,21 @@ gfc_trans_allocate (gfc_code * code)
needs to be provided, which is done most of the time by the
pre-evaluation step. */
nelems = NULL_TREE;
- if (expr3_len && code->expr3->ts.type == BT_CHARACTER)
- /* When al is an array, then the element size for each element
- in the array is needed, which is the product of the len and
- esize for char arrays. */
- tmp = fold_build2_loc (input_location, MULT_EXPR,
- TREE_TYPE (expr3_esize), expr3_esize,
- fold_convert (TREE_TYPE (expr3_esize),
- expr3_len));
+ if (expr3_len && (code->expr3->ts.type == BT_CHARACTER
+ || code->expr3->ts.type == BT_CLASS))
+ {
+ /* When al is an array, then the element size for each element
+ in the array is needed, which is the product of the len and
+ esize for char arrays. For unlimited polymorphics len can be
+ zero, therefore take the maximum of len and one. */
+ tmp = fold_build2_loc (input_location, MAX_EXPR,
+ TREE_TYPE (expr3_len),
+ expr3_len, fold_convert (TREE_TYPE (expr3_len),
+ integer_one_node));
+ tmp = fold_build2_loc (input_location, MULT_EXPR,
+ TREE_TYPE (expr3_esize), expr3_esize,
+ fold_convert (TREE_TYPE (expr3_esize), tmp));
+ }
else
tmp = expr3_esize;
if (!gfc_array_allocate (&se, expr, stat, errmsg, errlen,
