diff options
Diffstat (limited to 'gcc/objc/objc-act.c')
| -rw-r--r-- | gcc/objc/objc-act.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/gcc/objc/objc-act.c b/gcc/objc/objc-act.c index f115ba4..5488b78 100644 --- a/gcc/objc/objc-act.c +++ b/gcc/objc/objc-act.c @@ -7530,6 +7530,33 @@ comp_proto_with_proto (tree proto1, tree proto2) return (!type1 && !type2); } +/* Fold an OBJ_TYPE_REF expression for ObjC method dispatches, where + this occurs. ObjC method dispatches are _not_ like C++ virtual + member function dispatches, and we account for the difference here. */ +tree +#ifdef OBJCPLUS +objc_fold_obj_type_ref (tree ref, tree known_type) +#else +objc_fold_obj_type_ref (tree ref ATTRIBUTE_UNUSED, + tree known_type ATTRIBUTE_UNUSED) +#endif +{ +#ifdef OBJCPLUS + tree v = BINFO_VIRTUALS (TYPE_BINFO (known_type)); + + /* If the receiver does not have virtual member functions, there + is nothing we can (or need to) do here. */ + if (!v) + return NULL_TREE; + + /* Let C++ handle C++ virtual functions. */ + return cp_fold_obj_type_ref (ref, known_type); +#else + /* For plain ObjC, we currently do not need to do anything. */ + return NULL_TREE; +#endif +} + static void objc_start_function (tree name, tree type, tree attrs, #ifdef OBJCPLUS |