diff options
Diffstat (limited to 'gcc/c-common.c')
| -rw-r--r-- | gcc/c-common.c | 106 |
1 files changed, 94 insertions, 12 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c index 190c338d5f9..a3314ff1fac 100644 --- a/gcc/c-common.c +++ b/gcc/c-common.c @@ -2324,6 +2324,18 @@ c_alignof_expr (expr) return fold (build1 (NOP_EXPR, c_size_type_node, t)); } +/* Give the specifications for the format attributes, used by C and all + descendents. */ + +static const struct attribute_spec c_format_attribute_table[] = +{ + { "format", 3, 3, true, false, false, + handle_format_attribute }, + { "format_arg", 1, 1, true, false, false, + handle_format_arg_attribute }, + { NULL, 0, 0, false, false, false, NULL } +}; + /* Build tree nodes and builtin functions common to both C and C++ language frontends. */ @@ -2369,6 +2381,10 @@ c_common_nodes_and_builtins () tree va_list_ref_type_node; tree va_list_arg_type_node; + /* We must initialize this before any builtin functions (which might have + attributes) are declared. (c_common_lang_init is too late.) */ + format_attribute_table = c_format_attribute_table; + /* Define `int' and `char' first so that dbx will output them first. */ record_builtin_type (RID_INT, NULL, integer_type_node); record_builtin_type (RID_CHAR, "char", char_type_node); @@ -3774,24 +3790,34 @@ boolean_increment (code, arg) return val; } -/* Give the specifications for the format attributes, used by C and all - descendents. */ - -static const struct attribute_spec c_format_attribute_table[] = -{ - { "format", 3, 3, true, false, false, - handle_format_attribute }, - { "format_arg", 1, 1, true, false, false, - handle_format_arg_attribute }, - { NULL, 0, 0, false, false, false, NULL } +/* Handle C and C++ default attributes. */ + +enum built_in_attribute +{ +#define DEF_ATTR_NULL_TREE(ENUM) ENUM, +#define DEF_ATTR_INT(ENUM, VALUE) ENUM, +#define DEF_ATTR_IDENT(ENUM, STRING) ENUM, +#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) ENUM, +#define DEF_FN_ATTR(NAME, ATTRS, PREDICATE) /* No entry needed in enum. */ +#include "builtin-attrs.def" +#undef DEF_ATTR_NULL_TREE +#undef DEF_ATTR_INT +#undef DEF_ATTR_IDENT +#undef DEF_ATTR_TREE_LIST +#undef DEF_FN_ATTR + ATTR_LAST }; +static tree built_in_attributes[(int) ATTR_LAST]; + +static bool c_attrs_initialized = false; + +static void c_init_attributes PARAMS ((void)); + /* Do the parts of lang_init common to C and C++. */ void c_common_lang_init () { - format_attribute_table = c_format_attribute_table; - /* If still "unspecified", make it match -fbounded-pointers. */ if (flag_bounds_check < 0) flag_bounds_check = flag_bounded_pointers; @@ -3808,4 +3834,60 @@ c_common_lang_init () warning ("-Wformat-security ignored without -Wformat"); if (warn_missing_format_attribute && !warn_format) warning ("-Wmissing-format-attribute ignored without -Wformat"); + + if (!c_attrs_initialized) + c_init_attributes (); +} + +static void +c_init_attributes () +{ + /* Fill in the built_in_attributes array. */ +#define DEF_ATTR_NULL_TREE(ENUM) \ + built_in_attributes[(int) ENUM] = NULL_TREE; +#define DEF_ATTR_INT(ENUM, VALUE) \ + built_in_attributes[(int) ENUM] = build_int_2 (VALUE, VALUE < 0 ? -1 : 0); +#define DEF_ATTR_IDENT(ENUM, STRING) \ + built_in_attributes[(int) ENUM] = get_identifier (STRING); +#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) \ + built_in_attributes[(int) ENUM] \ + = tree_cons (built_in_attributes[(int) PURPOSE], \ + built_in_attributes[(int) VALUE], \ + built_in_attributes[(int) CHAIN]); +#define DEF_FN_ATTR(NAME, ATTRS, PREDICATE) /* No initialization needed. */ +#include "builtin-attrs.def" +#undef DEF_ATTR_NULL_TREE +#undef DEF_ATTR_INT +#undef DEF_ATTR_IDENT +#undef DEF_ATTR_TREE_LIST +#undef DEF_FN_ATTR + ggc_add_tree_root (built_in_attributes, (int) ATTR_LAST); + c_attrs_initialized = true; +} + +/* Depending on the name of DECL, apply default attributes to it. */ + +void +c_common_insert_default_attributes (decl) + tree decl; +{ + tree name = DECL_NAME (decl); + + if (!c_attrs_initialized) + c_init_attributes (); + +#define DEF_ATTR_NULL_TREE(ENUM) /* Nothing needed after initialization. */ +#define DEF_ATTR_INT(ENUM, VALUE) +#define DEF_ATTR_IDENT(ENUM, STRING) +#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) +#define DEF_FN_ATTR(NAME, ATTRS, PREDICATE) \ + if ((PREDICATE) && name == built_in_attributes[(int) NAME]) \ + decl_attributes (&decl, built_in_attributes[(int) ATTRS], \ + ATTR_FLAG_BUILT_IN); +#include "builtin-attrs.def" +#undef DEF_ATTR_NULL_TREE +#undef DEF_ATTR_INT +#undef DEF_ATTR_IDENT +#undef DEF_ATTR_TREE_LIST +#undef DEF_FN_ATTR } |