* c-common.c (decl_attributes): Allow applying attribute `unused'
on a LABEL_DECL.
* c-parse.in (label): Parse attributes after a label, and call
`decl_attributes' to handle them.
* gansidecl.h (ATTRIBUTE_UNUSED_LABEL): Define.
* genrecog.c (OUTPUT_LABEL, write_tree_1, write_tree): When
generating labels, mark them with ATTRIBUTE_UNUSED_LABEL.
* invoke.texi: Note that labels can be marked `unused'.
From-SVN: r24478
* c-common.c (declare_function_name): Declare predefinied variable
`__func__'.
* c-decl.c (flag_isoc9x): Set to 1 by default.
(c_decode_option): Handle -std= option. Remove -flang-isoc9x.
(grokdeclarator): Always emit warning about implicit int for ISO C 9x.
* c-parse.in: Allow constructors in ISO C 9x.
Rewrite designator list handling.
Allow [*] parameters.
Don't warn about comma at end of enum definition for ISO C 9x.
* cccp.c (c9x): New variable.
(rest_extension): New variable.
(print_help): Document new -std= option.
(main): Recognize -std= option. Set c9x appropriately.
(create_definition): Recognize ISO C 9x vararg macros.
* gcc.c (default_compilers): Adjust specs for -std options.
(option_map): Add --std.
(display_help): Document -std.
* toplev.c (documented_lang_options): Add -std and remove
-flang-isoc9x.
* c-lex.c (yylex): Recognize hex FP constants and call REAL_VALUE_ATOF
or REAL_VALUE_HTOF based on base of the constants.
* fold-const.c (real_hex_to_f): New function. Replacement function
for hex FP conversion if REAL_ARITHMETIC is not defined.
* real.c (asctoeg): Add handling of hex FP constants.
* real.h: Define REAL_VALUE_HTOF if necessary using ereal_atof or
real_hex_to_f.
Co-Authored-By: Richard Henderson <rth@cygnus.com>
Co-Authored-By: Stephen L Moshier <moshier@world.std.com>
From-SVN: r24049
* invoke.texi: Document -flang-isoc9x.
* Makefile.in (OBJS): Add splay-tree.o.
(c-common.o): Depend on rtl.h.
(splay-tree.o): List dependencies and provide build rule.
* rtl.h (record_alias_subset): New function.
* alias.c: Include splay-tree.h.
(alias_set_entry): New type.
(CHECK_ALIAS_SETS_FOR_CONSISTENCY): Remove.
(DIFFERENT_ALIAS_SETS_P): Use mem_in_disjoint_alias_sets_p.
(mems_in_disjoin_alias_sets_p): New function.
(alias_set_compare): Likewise.
(insert_subset_children): Likewise.
(get_alias_set_entry): Likewise.
* tree.h (TYPE_RESTRICT): New macro.
(TYPE_UNQUALIFIED): New manifest constant.
(TYPE_QUAL_CONST): Likewise
(TYPE_QUAL_VOLATILE): Likewise.
(TYPE_QUAL_RESTRICT): Likewise.
(tree_type): Add restrict_flag. Reduce count of free bits.
(DECL_POINTER_ALIAS_SET): New macro.
(DECL_POINTER_ALIAS_SET_KNOWN_P): Likewise.
(tree_decl): Add pointer_alias_set.
(build_qualified_type): New function.
(build_type_variant): Define in terms of build_qualified_type.
* tree.c (set_type_quals): New function.
(make_node): Initializae DECL_POINTER_ALIAS_SET.
(build_type_attribute_variant): Use build_qualified_type and
set_type_quals.
(build_type_variant): Rename, and modify, to become...
(build_qualified_type): New function.
(build_complex_type): Use set_type_quals.
* c-tree.h (C_TYPE_OBJECT_P): New macro.
(C_TYPE_FUNCTION_P): Likewise.
(C_TYPE_INCOMPLETE_P): Likewise.
(C_TYPE_OBJECT_OR_INCOMPLETE_P): Likewise.
(c_apply_type_quals_to_decl): New function.
(c_build_qualified_type): New function.
(c_build_type_variant): Define in terms of c_build_qualified_type.
(flag_isoc9x): Declare.
* c-typeck.c (qualify_type): Use c_build_qualified_type.
(common_type): Change to use TYPE_QUALS.
(comptypes): Likewise.
(convert_for_assignment): Likewise.
* c-aux-info.c (gen_type): Likewise. Deal with `restrict'.
* c-decl.c (flag_isoc9x): Define.
(c_decode_option): Handle -flang-isoc9x.
(grokdeclarator): Update to handle restrict. Use TYPE_QUALS,
c_build_qualified_type, etc. Use c_apply_type_quals_to_decl.
* c-lex.c (init_lex): Deal with restrict.
(init_lex): Don't treat restrict as a reserved word in
-traditional mode, or without -flang-isoc9x.
* c-lex.h (rid): Add RID_RESTRICT.
* c-parse.gperf (restrict, __restrict, __restrict__): Make
equivalent to RID_RESTRICT.
* c-parse.in (TYPE_QUAL): Update comment.
* c-common.c: Include rtl.h.
(c_find_base_decl): New function.
(c_build_type_variant): Rename, and modify, to become ...
(c_build_qualified_type): New function.
(c_apply_type_quals_to_decl): Likewise.
(c_get_alias_set): For INDIRECT_REFs, check to see if we can find
a particular alias set for the reference.
* toplev.c (documented_lang_options): Add -flang-isoc9x.
From-SVN: r23212
(expr_no_commas): Do not store temporary skip_evaluation increments on
yacc value stack; the code was buggy and occasionally wrote past the
end of the stack.
From-SVN: r13720
(unary_expr, expr_no_commas): Increment skip_evaluation when analyzing an
expression that is known not to be evaluated.
(sizeof, alignof): New rules.
From-SVN: r13231
({typed_declspecs,reserved_declspecs,declmods}_no_prefix_attr): New.
(current_declspecs): Initialize to NULL_TREE.
(fndef): Pass current_declspecs, not $1, to start_function.
(old_style_parm_decls): Renamed from xdecls.
(datadecl, declmods): Add references to new rules.
(setspecs): Call split_specs_attrs.
(absdcl1): Remove case with setattrs.
From-SVN: r12924
(stmts, stmt_or_label): Use new member to avoid lexical lookahead hack.
(lineno_stmt_or_labels): New rule.
(lineno_stmt_or_label, stmt_or_label): Yield nonzero if it ends in a label.
From-SVN: r10302
(datadef, fndef, ivar_decl, mydecls): Restore declspec_stack since
setspecs is used.
(parmlist_or_identifiers): Use setspecs before parsing parms and
restore after parsing parms.
From-SVN: r9760
(attribute_list): Just make chain of all attributes.
(attrib): Consistently put name as PURPOSE, args, if any, as VALUE.
(structsp): Allow attributes on any struct or union.
From-SVN: r9260
(setspecs): Save prefix_attributes in declspec_stack.
(decl rules): Restore prefix_attributes along with current_declspecs.
(setattrs): Concatenate prefix_attributes to previous value.
From-SVN: r9151
(init, compstmt, stmt, all_iter_stmt_with_decl): If the lookahead
token is a constant and we need to pop the momentary obstack, don't
free it.
From-SVN: r7382
