diff options
Diffstat (limited to 'contrib/gcc/c-common.c')
| -rw-r--r-- | contrib/gcc/c-common.c | 78 |
1 files changed, 76 insertions, 2 deletions
diff --git a/contrib/gcc/c-common.c b/contrib/gcc/c-common.c index b1fa91dd80ab..4b47ef422b9b 100644 --- a/contrib/gcc/c-common.c +++ b/contrib/gcc/c-common.c @@ -541,6 +541,9 @@ static tree handle_pure_attribute (tree *, tree, tree, int, bool *); static tree handle_novops_attribute (tree *, tree, tree, int, bool *); static tree handle_deprecated_attribute (tree *, tree, tree, int, bool *); +/* APPLE LOCAL begin "unavailable" attribute (Radar 2809697) --ilr */ +static tree handle_unavailable_attribute (tree *, tree, tree, int, bool *); +/* APPLE LOCAL end "unavailable" attribute --ilr */ static tree handle_vector_size_attribute (tree *, tree, tree, int, bool *); static tree handle_nonnull_attribute (tree *, tree, tree, int, bool *); @@ -626,6 +629,10 @@ const struct attribute_spec c_common_attribute_table[] = handle_novops_attribute }, { "deprecated", 0, 0, false, false, false, handle_deprecated_attribute }, + /* APPLE LOCAL begin "unavailable" attribute (Radar 2809697) --ilr */ + { "unavailable", 0, 0, false, false, false, + handle_unavailable_attribute }, + /* APPLE LOCAL end "unavailable" attribute --ilr */ { "vector_size", 1, 1, false, true, false, handle_vector_size_attribute }, { "visibility", 1, 1, false, false, false, @@ -4394,7 +4401,10 @@ handle_unused_attribute (tree *node, tree name, tree ARG_UNUSED (args), if (TREE_CODE (decl) == PARM_DECL || TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == FUNCTION_DECL - || TREE_CODE (decl) == LABEL_DECL +/* APPLE LOCAL begin for-fsf-4_4 3274130 5295549 */ \ + || (TREE_CODE (decl) == LABEL_DECL + && ! DECL_ARTIFICIAL (decl)) +/* APPLE LOCAL end for-fsf-4_4 3274130 5295549 */ \ || TREE_CODE (decl) == TYPE_DECL) TREE_USED (decl) = 1; else @@ -4842,7 +4852,10 @@ handle_aligned_attribute (tree *node, tree ARG_UNUSED (name), tree args, TYPE_USER_ALIGN (*type) = 1; } else if (! VAR_OR_FUNCTION_DECL_P (decl) - && TREE_CODE (decl) != FIELD_DECL) +/* APPLE LOCAL begin for-fsf-4_4 3274130 5295549 */ \ + && TREE_CODE (decl) != FIELD_DECL + && TREE_CODE (decl) != LABEL_DECL) +/* APPLE LOCAL end for-fsf-4_4 3274130 5295549 */ \ { error ("alignment may not be specified for %q+D", decl); *no_add_attrs = true; @@ -5345,6 +5358,67 @@ handle_deprecated_attribute (tree *node, tree name, return NULL_TREE; } +/* APPLE LOCAL begin "unavailable" attribute (Radar 2809697) --ilr */ +/* Handle a "unavailable" attribute; arguments as in + struct attribute_spec.handler. */ + +static tree +handle_unavailable_attribute (tree *node, tree name, + tree args ATTRIBUTE_UNUSED, + int flags ATTRIBUTE_UNUSED, + bool *no_add_attrs) +{ + tree type = NULL_TREE; + int warn = 0; + const char *what = NULL; + + if (DECL_P (*node)) + { + tree decl = *node; + type = TREE_TYPE (decl); + + if (TREE_CODE (decl) == TYPE_DECL + || TREE_CODE (decl) == PARM_DECL + || TREE_CODE (decl) == VAR_DECL + || TREE_CODE (decl) == FUNCTION_DECL) + { + TREE_UNAVAILABLE (decl) = 1; + } + else + warn = 1; + } + else if (TYPE_P (*node)) + { + if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE)) + *node = build_variant_type_copy (*node); + TREE_UNAVAILABLE (*node) = 1; + type = *node; + } + else + warn = 1; + + if (warn) + { + *no_add_attrs = true; + if (type && TYPE_NAME (type)) + { + if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) + what = IDENTIFIER_POINTER (TYPE_NAME (*node)); + else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL + && DECL_NAME (TYPE_NAME (type))) + what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))); + } + if (what) + warning (0, "`%s' attribute ignored for `%s'", + IDENTIFIER_POINTER (name), what); + else + warning (0, "`%s' attribute ignored", IDENTIFIER_POINTER (name)); + } + + return NULL_TREE; +} +/* APPLE LOCAL end "unavailable" attribute --ilr */ + /* Handle a "vector_size" attribute; arguments as in struct attribute_spec.handler. */ |