diff options
Diffstat (limited to 'gcc/c-common.c')
| -rw-r--r-- | gcc/c-common.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c index 97aba258b12..1033035db23 100644 --- a/gcc/c-common.c +++ b/gcc/c-common.c @@ -145,7 +145,7 @@ enum attrs {A_PACKED, A_NOCOMMON, A_COMMON, A_NORETURN, A_CONST, A_T_UNION, A_NO_CHECK_MEMORY_USAGE, A_NO_INSTRUMENT_FUNCTION, A_CONSTRUCTOR, A_DESTRUCTOR, A_MODE, A_SECTION, A_ALIGNED, A_UNUSED, A_FORMAT, A_FORMAT_ARG, A_WEAK, A_ALIAS, A_MALLOC, - A_NO_LIMIT_STACK}; + A_NO_LIMIT_STACK, A_PURE}; enum format_type { printf_format_type, scanf_format_type, strftime_format_type }; @@ -457,6 +457,7 @@ init_attributes () add_attribute (A_NO_CHECK_MEMORY_USAGE, "no_check_memory_usage", 0, 0, 1); add_attribute (A_MALLOC, "malloc", 0, 0, 1); add_attribute (A_NO_LIMIT_STACK, "no_stack_limit", 0, 0, 1); + add_attribute (A_PURE, "pure", 0, 0, 1); } /* Default implementation of valid_lang_attribute, below. By default, there @@ -596,6 +597,7 @@ decl_attributes (node, attributes, prefix_attributes) case A_MALLOC: if (TREE_CODE (decl) == FUNCTION_DECL) DECL_IS_MALLOC (decl) = 1; + /* ??? TODO: Support types. */ else warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name)); break; @@ -625,6 +627,15 @@ decl_attributes (node, attributes, prefix_attributes) warning ( "`%s' attribute ignored", IDENTIFIER_POINTER (name)); break; + case A_PURE: + if (TREE_CODE (decl) == FUNCTION_DECL) + DECL_IS_PURE (decl) = 1; + /* ??? TODO: Support types. */ + else + warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name)); + break; + + case A_T_UNION: if (is_type && TREE_CODE (type) == UNION_TYPE |