diff options
| -rw-r--r-- | gnu/egcs/gcc/c-common.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/gnu/egcs/gcc/c-common.c b/gnu/egcs/gcc/c-common.c index 42632c054c3..771bfce7a2a 100644 --- a/gnu/egcs/gcc/c-common.c +++ b/gnu/egcs/gcc/c-common.c @@ -56,8 +56,8 @@ int skip_evaluation; 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_NONNULL, - A_SENTINEL, A_BOUNDED}; + A_USED, A_UNUSED, A_FORMAT, A_FORMAT_ARG, A_WEAK, A_ALIAS, + A_NONNULL, A_SENTINEL, A_BOUNDED}; enum format_type { printf_format_type, scanf_format_type, strftime_format_type, syslog_format_type, @@ -385,6 +385,7 @@ init_attributes () add_attribute (A_COMMON, "common", 0, 0, 1); add_attribute (A_NORETURN, "noreturn", 0, 0, 1); add_attribute (A_NORETURN, "volatile", 0, 0, 1); + add_attribute (A_USED, "used", 0, 0, 1); add_attribute (A_UNUSED, "unused", 0, 0, 0); add_attribute (A_CONST, "const", 0, 0, 1); add_attribute (A_T_UNION, "transparent_union", 0, 0, 0); @@ -569,6 +570,15 @@ decl_attributes (node, attributes, prefix_attributes) warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name)); break; + case A_USED: + if (TREE_CODE (decl) == FUNCTION_DECL + || (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (node))) + TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (node)) + = TREE_USED (decl) = 1; + else + warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name)); + break; + case A_UNUSED: if (is_type) TREE_USED (type) = 1; |