diff options
Diffstat (limited to 'gcc/tree.h')
| -rw-r--r-- | gcc/tree.h | 10 |
1 files changed, 7 insertions, 3 deletions
@@ -1987,8 +1987,10 @@ class auto_suppress_location_wrappers so they must be checked as well. */ #define TYPE_UID(NODE) (TYPE_CHECK (NODE)->type_common.uid) -/* Type size in bits as a tree expression. Need not be constant - and may be null. */ +/* Type size in bits as a tree expression. Need not be constant and may + be greater than TYPE_SIZE for a C++ FIELD_DECL representing a base + class subobject with its own virtual base classes (which are laid out + separately). */ #define TYPE_SIZE(NODE) (TYPE_CHECK (NODE)->type_common.size) /* Likewise, type size in bytes. */ #define TYPE_SIZE_UNIT(NODE) (TYPE_CHECK (NODE)->type_common.size_unit) @@ -2521,7 +2523,9 @@ extern tree vector_element_bits_tree (const_tree); #define DECL_INITIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.initial) /* Holds the size of the datum, in bits, as a tree expression. - Need not be constant and may be null. */ + Need not be constant and may be null. May be less than TYPE_SIZE + for a C++ FIELD_DECL representing a base class subobject with its + own virtual base classes (which are laid out separately). */ #define DECL_SIZE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size) /* Likewise for the size in bytes. */ #define DECL_SIZE_UNIT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size_unit) |