diff options
Diffstat (limited to 'gcc/cp/class.c')
| -rw-r--r-- | gcc/cp/class.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/gcc/cp/class.c b/gcc/cp/class.c index 582caf4..706ebbf 100644 --- a/gcc/cp/class.c +++ b/gcc/cp/class.c @@ -4759,7 +4759,15 @@ layout_class_type (tree t, tree *virtuals_p) field to the size of its declared type; the rest of the field is effectively invisible. */ DECL_SIZE (field) = TYPE_SIZE (type); - DECL_MODE (field) = TYPE_MODE (type); + /* We must also reset the DECL_MODE of the field. */ + if (abi_version_at_least (2)) + DECL_MODE (field) = TYPE_MODE (type); + else if (warn_abi + && DECL_MODE (field) != TYPE_MODE (type)) + /* Versions of G++ before G++ 3.4 did not reset the + DECL_MODE. */ + warning ("the offset of `%D' may not be ABI-compliant and may " + "change in a future version of GCC", field); } else layout_nonempty_base_or_field (rli, field, NULL_TREE, |