diff options
Diffstat (limited to 'gcc/ada/gcc-interface/trans.c')
| -rw-r--r-- | gcc/ada/gcc-interface/trans.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/ada/gcc-interface/trans.c b/gcc/ada/gcc-interface/trans.c index 8e0ccd4..13df71f 100644 --- a/gcc/ada/gcc-interface/trans.c +++ b/gcc/ada/gcc-interface/trans.c @@ -1878,6 +1878,20 @@ Attribute_to_gnu (Node_Id gnat_node, tree *gnu_result_type_p, int attribute) prefix_unused = true; break; + case Attr_Descriptor_Size: + gnu_type = TREE_TYPE (gnu_prefix); + gcc_assert (TREE_CODE (gnu_type) == UNCONSTRAINED_ARRAY_TYPE); + + /* What we want is the offset of the ARRAY field in the record that the + thin pointer designates, but the components have been shifted so this + is actually the opposite of the offset of the BOUNDS field. */ + gnu_type = TYPE_OBJECT_RECORD_TYPE (gnu_type); + gnu_result = size_binop (MINUS_EXPR, bitsize_zero_node, + bit_position (TYPE_FIELDS (gnu_type))); + gnu_result_type = get_unpadded_type (Etype (gnat_node)); + prefix_unused = true; + break; + case Attr_Null_Parameter: /* This is just a zero cast to the pointer type for our prefix and dereferenced. */ |