diff options
Diffstat (limited to 'gcc/cp/cp-tree.h')
| -rw-r--r-- | gcc/cp/cp-tree.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h index 8d14911235d..cdb67063f3a 100644 --- a/gcc/cp/cp-tree.h +++ b/gcc/cp/cp-tree.h @@ -1821,6 +1821,23 @@ struct lang_decl GTY(()) #define DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P(NODE) \ (TREE_LANG_FLAG_2 (VAR_DECL_CHECK (NODE))) +/* Nonzero for a VAR_DECL that can be used in an integral constant + expression. + + [expr.const] + + An integral constant-expression can only involve ... const + variables of static or enumeration types initialized with + constant expressions ... + + The standard does not require that the expression be non-volatile. + G++ implements the proposed correction in DR 457. */ +#define DECL_INTEGRAL_CONSTANT_VAR_P(NODE) \ + (TREE_CODE (NODE) == VAR_DECL \ + && CP_TYPE_CONST_NON_VOLATILE_P (TREE_TYPE (NODE)) \ + && INTEGRAL_OR_ENUMERATION_TYPE_P (TREE_TYPE (NODE)) \ + && DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (NODE)) + /* Nonzero if the DECL was initialized in the class definition itself, rather than outside the class. This is used for both static member VAR_DECLS, and FUNTION_DECLS that are defined in the class. */ |