Commit Graph

845 Commits

Author SHA1 Message Date
Manuel López-Ibáñez
b3b433c507 re PR middle-end/7651 (Define -Wextra strictly in terms of other warning flags)
2006-12-16  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

	PR middle-end/7651
	* c.opt (Wempty-body): New.
	* doc/invoke.texi (Wempty-body): Document it.
	(Wextra): Enabled by -Wextra.
	* c-opts.c (c_common_post_options): Enabled by -Wextra.
	* c-common.c (empty_body_warning): Replace Wextra with Wempty-body.
	* c-parser.c (c_parser_c99_block_statement): Likewise.
testsuite/
	* gcc.dg/20001116-1.c: Replace -Wextra with -Wempty-body.
	* gcc.dg/if-empty-1.c: Likewise.
	* gcc.dg/pr23165.c: Likewise.
	* g++.dg/warn/empty-body.C: Likewise.

From-SVN: r119963
2006-12-16 16:48:01 +00:00
Ian Lance Taylor
2a67bec24f re PR c++/19564 (-Wparentheses does not work with the C++ front-end)
PR c++/19564
	PR c++/19756
gcc/:
	* c-typeck.c (parser_build_binary_op): Move parentheses warnings
	to warn_about_parentheses in c-common.c.
	* c-common.c (warn_about_parentheses): New function.
	* c-common.h (warn_about_parentheses): Declare.
	* doc/invoke.texi (Warning Options): Update -Wparentheses
	description.
gcc/cp/:
	* parser.c (cp_parser_expression_stack_entry): Add field
	lhs_type.
	(cp_parser_binary_expression): Track tree code of left hand side
	of expression.  Use it when calling build_x_binary_op.
	(cp_parser_selection_statement): Add if_p parameter.  Change all
	callers.  Warn about ambiguous else.
	(cp_parser_statement): Add if_p parameter.  Change all callers.
	(cp_parser_implicitly_scoped_statement): Likewise.
	* typeck.c (build_x_binary_op): Add parameters arg1_code and
	arg2_code.  Change all callers.  Call warn_about_parentheses.
	* cp-tree.h (build_x_binary_op): Update declaration.
gcc/testsuite/:
	* g++.dg/warn/Wparentheses-5.C: New test.
	* g++.dg/warn/Wparentheses-6.C: New test.
	* g++.dg/warn/Wparentheses-7.C: New test.
	* g++.dg/warn/Wparentheses-8.C: New test.
	* g++.dg/warn/Wparentheses-9.C: New test.
	* g++.dg/warn/Wparentheses-10.C: New test.
	* g++.dg/warn/Wparentheses-11.C: New test.
	* g++.dg/warn/Wparentheses-12.C: New test.
	* g++.dg/warn/Wparentheses-13.C: New test.
	* g++.dg/warn/Wparentheses-14.C: New test.
	* g++.dg/warn/Wparentheses-15.C: New test.
	* g++.dg/warn/Wparentheses-16.C: New test.
	* g++.dg/warn/Wparentheses-17.C: New test.
	* g++.dg/warn/Wparentheses-18.C: New test.
	* g++.dg/warn/Wparentheses-19.C: New test.
	* g++.dg/warn/Wparentheses-20.C: New test.
	* g++.dg/warn/Wparentheses-21.C: New test.
libstdc++-v3/:
	* include/bits/locale_facets.tcc (num_get<>::_M_extract_float):
	Add parentheses around && within || to avoid warning.
	(num_get<>::_M_extract_int): Likewise.
	(money_get<>::_M_extract): Likewise.
	(num_get<>::do_get(iter_type, iter_type, ios_base&,
	ios_base::iostate&, void*&)): Add parentheses around & within | to
	avoid warning.
	(num_put<>::do_put(iter_type, ios_base&, char_type, const void*)):
	Likewise.
	* include/bits/streambuf_iterator.h (istreambuf_iterator::equal):
	Add parentheses around && within || to avoid warning.
	* libsupc++/tinfo.cc (__do_dyncast): Likewise.
	* src/locale.cc (locale::_S_normalize_category): Likewise.
	* include/bits/stl_tree.h (_Rb_tree<>::_M_insert_unique): Add
	braces to avoid ambiguous else warning.
	* src/strstream.cc (strstreambuf::_M_free): Likewise.
	* src/tree.cc (_Rb_tree_rebalance_for_erase): Likewise.

From-SVN: r119855
2006-12-14 05:49:06 +00:00
Volker Reichelt
d8e1d61976 re PR c++/30021 (ICE on invalid parameter for main)
PR c++/30021
	* c-common.c (check_main_parameter_types): Check for error_mark_node.

	* g++.dg/other/main1.C: New test.

From-SVN: r119415
2006-12-01 21:28:35 +00:00
Roger Sayle
91c41804cb c-common.c (constant_fits_type_p): Delete.
2006-11-27  Roger Sayle  <roger@eyesopen.com>
	    Manuel Lopez-Ibanez <manu@gcc.gnu.org>
	    
	* c-common.c (constant_fits_type_p): Delete.
	(unsigned_conversion_warning): Delete.
	(conversion_warning): Integrate Wconversion warning from
	unsigned_conversion_warning.
	(convert_and_check): Integrate Woverflow warning from
	unsigned_conversion_warning.  Reorganize and simplify to avoid
	dependence upon the middle-end setting TREE_OVERFLOW on integral
	conversions, by using int_fits_type_p directly.

Co-Authored-By: Manuel López-Ibáñez <manu@gcc.gnu.org>

From-SVN: r119258
2006-11-27 18:47:41 +00:00
Jakub Jelinek
238564598b re PR c/29736 (ICE on duplicate vector attribute)
PR c/29736
	* c-common.c (handle_vector_size_attribute): Disallow VECTOR_TYPE
	or UNION_TYPE inner types.

	* gcc.dg/pr29736.c: New test.

From-SVN: r119165
2006-11-24 22:23:23 +01:00
Manuel López-Ibáñez
422c3a54ea re PR c/2707 (gcc does not warn on truncate)
2006-11-24  Manuel Lopez-Ibanez <manu@gcc.gnu.org>

	PR c/2707
	PR c++/26167
	* c-common.c (conversion_warning): New.
	(convert_and_check): Call conversion_warning unless there is an
	overflow warning.
	* doc/invoke.texi (-Wconversion): Update description.

testsuite/

	* gcc.dg/Wconversion-integer.c: New. Supersedes	
	Wconversion-negative-constants.c 
	* gcc.dg/Wconversion-real.c: New.
	* gcc.dg/Wconversion-real-integer.c: New.
	* gcc.dg/Wconversion-negative-constants.c: Deleted.
	* g++.dg/warn/Wconversion1.C: Modified.

From-SVN: r119143
2006-11-24 01:50:33 +00:00
Jakub Jelinek
4eb7fd8398 c-common.c (c_common_attributes): Add gnu_inline attribyte.
* c-common.c (c_common_attributes): Add gnu_inline attribyte.
	(handle_gnu_inline_attribute): New function.
	* c-decl.c (diagnose_mismatched_decls): Handle gnu_inline attribute.
	(merge_decls, start_decl, start_function): Likewise.
	* doc/extend.texi: Document gnu_inline attribute.

	* gcc.dg/inline-17.c: New test.

From-SVN: r118567
2006-11-08 00:01:23 +01:00
Doug Gregor
966541e34d c-common.c (flag_cpp0x): New.
2006-11-01	Douglas Gregor <doug.gregor@gmail.com>

	* c-common.c (flag_cpp0x): New.
	* c-common.h (flag_cpp0x): New.
	* c-cppbuiltin.c (c_cpp_builtins): If C++0x extensions are
	supported, define __GXX_EXPERIMENTAL_CPP0X__.
	* c-opts.c (set_std_cxx0x): New.
	(c_common_handle_option): Handle -std=c++0x, -std=gnu++0x.
	* c.opt (std=c++0x): Document.
	(std=gnu++0x): Ditto.
	* doc/cpp.texi: Document __GXX_EXPERIMENTAL_CPP0X__.
	* doc/invoke.texi: Document -std=c++0x, -std=gnu++0x.

From-SVN: r118386
2006-11-01 16:29:06 +00:00
Dirk Mueller
a1e45ff04c re PR c++/6321 (no warning for bad main function declaration)
2006-10-30  Dirk Mueller  <dmueller@suse.de>

        PR c++/6321
        * cp/decl.c (grokfndecl): Use check_main_parameter_types.

        * c-common.h (strict_aliasing_warning): Fix whitespace.
        * c-decl (start_function): Move code for main decl warning ..
        * c-common.c (check_main_parameter_types): .. here.
        * c-common.h (check_main_parameter_types): Declare.

From-SVN: r118206
2006-10-30 23:15:42 +00:00
Rafael Ávila de Espíndola
c79efc4d2a decl.c: Include langhooks.h.
* gcc/java/decl.c: Include langhooks.h.
       (builtin_function): Remove.
       (java_init_decl_processing): Replace calls to builtin_function
       with add_builtin_function.

       * gcc/java/Make-lang.in (jc1$(exeext)): Depend on and link with
       attribs.o.
       (java/decl.o): Depend on langhooks.h.

       * gcc/java/java-tree.h (builtin_function): Remove.

       * gcc/tree.c (local_define_builtin): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.

       * gcc/objc/objc-act.c (synth_module_prologue): Replace calls to
       builtin_function with add_builtin_function.
       (build_next_objc_exception_stuff): Replace calls to
       builtin_function with add_builtin_function.
       (build_objc_exception_stuff): Replace calls to
       builtin_function with add_builtin_function.

       * gcc/objcp/objcp-decl.h (objcp_builtin_function): Remove.

       * gcc/cp/decl.c (builtin_function_1): Move common code to
       add_builtin_function.
       (builtin_function): Rename to cxx_builtin_function.
       Change the signature.

       * gcc/cp/call.c: Include langhooks.h.
       (build_java_interface_fn_ref):  Replace calls to
       builtin_function with add_builtin_function.

       * gcc/cp/Make-lang.in (cp/call.o): Depend on langhooks.h.

       * gcc/cp/cp-objcp-common.h (LANG_HOOKS_BUILTIN_FUNCTION): Define as
       cxx_builtin_function.

       * gcc/cp/cp-tree.h (builtin_function): Rename to cxx_builtin_function.
       Change the signature.

       * gcc/c-objc-common.h (LANG_HOOKS_BUILTIN_FUNCTION): Define as
       c_builtin_function.

       * gcc/c-tree.h (builtin_function): Rename to c_builtin_function. Change
       the signature.

       * gcc/ada/utils.c (builtin_function): Rename to gnat_builtin_function.
       Move common code to add_builtin_function.

       * gcc/ada/misc.c (LANG_HOOKS_BUILTIN_FUNCTION): Define as
       gnat_builtin_function.

       * gcc/ada/gigi.h (builtin_function): Rename to gnat_builtin_function.
       Change the signature.

       * gcc/c-decl.c (builtin_function): Rename to c_builtin_function. Move
       common code to add_builtin_function.

       * gcc/fortran/Make-lang.in (f951$(exeext)): Depend on and link with
       attribs.o.

       * gcc/fortran/trans.h (builtin_function): Rename to
       gfc_builtin_function. Change the signature.

       * gcc/fortran/f95-lang.c (LANG_HOOKS_BUILTIN_FUNCTION): Define as
       gfc_builtin_function.
       (builtin_function): Rename to gfc_builtin_function. Move common
       code to builtin_function.
       (gfc_define_builtin): Replace calls to builtin_function with
       gfc_define_builtin.

       * gcc/langhooks.c (add_builtin_function): New function.
       (lhd_builtin_function): New function.

       * gcc/langhooks.h (struct lang_hooks): Change the signature of
       builtin_function.
       (add_builtin_function): New function.

       * gcc/treelang/treetree.c (builtin_function): Remove.

       * gcc/tree-ssa-loop-prefetch.c (tree_ssa_prefetch_arrays): Replace
       calls to lang_hooks.builtin_function with add_builtin_function.

       * gcc/c-common.c (decl_builtin_1): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.

       * gcc/config/alpha/alpha.c (alpha_init_builtins): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.

       * gcc/config/frv/frv.c (def_builtin): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.

       * gcc/config/s390/s390.c (s390_init_builtins): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.

       * gcc/config/sparc/sparc.c (def_builtin): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.

       * gcc/config/i386/i386.c (def_builtin): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.
       (def_builtin): Replace calls to lang_hooks.builtin_function with
       add_builtin_function.

       * gcc/config/sh/sh.c (sh_media_init_builtins): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.

       * gcc/config/c4x/c4x.c (c4x_init_builtins): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.

       * gcc/config/stormy16/stormy16.c (xstormy16_init_builtins):
       Replace calls to lang_hooks.builtin_function with
       add_builtin_function.

       * gcc/config/iq2000/iq2000.c (def_builtin):
       Replace calls to lang_hooks.builtin_function with
       add_builtin_function.

       * gcc/config/ia64/ia64.c (def_builtin): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.

       * gcc/config/rs6000/rs6000.c (def_builtin): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.
       (altivec_init_builtins): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.

       * gcc/config/arm/arm.c (def_mbuiltin): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.
       (arm_init_tls_builtins): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.

       * gcc/config/mips/mips.c (mips_init_builtins): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.

       * gcc/config/bfin/bfin.c (def_builtin): Replace calls to
       lang_hooks.builtin_function with add_builtin_function.

       * gcc/langhooks-def.h (lhd_builtin_function): New function.
       (LANG_HOOKS_BUILTIN_FUNCTION): Define as lhd_builtin_function.

From-SVN: r117981
2006-10-23 19:47:58 +00:00
Roger Sayle
c782c2fed8 tree.h (CASE_LOW_SEEN, [...]): New macros for manipulating temporary visit flags on CASE_LABEL_EXPRs.
* tree.h (CASE_LOW_SEEN, CASE_HIGH_SEEN): New macros for manipulating
	temporary visit flags on CASE_LABEL_EXPRs.
	* c-common.c (match_case_to_enum): Add function comment.  Avoid
	O(N) loop, by looking up both CASE_LOW_SEEN and CASE_HIGH_SEEN.
	(c_do_switch_warnings):  Reorganize to record CASE_LOW_SEEN and
	CASE_HIGH_SEEN for enumerated types.  If the switch expression is
	a constant, only warn if that constant value isn't handled.

	* gcc.dg/Wswitch-enum-2.c: New test case.
	* gcc.dg/Wswitch-enum-3.c: Likewise.

From-SVN: r116481
2006-08-26 23:51:14 +00:00
Jakub Jelinek
343d4b27bf re PR c/28744 (externally_visible attribute not effective with prior declaration of symbol.)
PR c/28744
	* cgraph.h (struct cgraph_node): Remove externally_visible
	bitfield.
	* cgraphunit.c (process_function_and_variable_attributes): Set
	local.externally_visible rather than externally_visible.

	PR c/28744
	* c-common.c (handle_externally_visible_attribute): First look
	at TREE_CODE and only if it is function or var decl, check for
	non-public objects.  Don't warn for DECL_EXTERNAL.
	* cgraphunit.c (process_function_and_variable_attributes): Warn
	if externally_visible attribute is used on non-public object.

	* gcc.dg/attr-externally-visible-1.c: New test.
	* gcc.dg/attr-externally-visible-2.c: New test.
	* g++.dg/parse/attr-externally-visible-1.C: New test.
	* g++.dg/parse/attr-externally-visible-2.C: New test.

From-SVN: r116222
2006-08-17 13:52:26 +02:00
Paolo Bonzini
6d4d7b0eed [multiple changes]
2006-08-17  Paolo Bonzini <bonzini@gnu.org>

	PR c++/28573
	* c-common.c (fold_offsetof_1): Add an argument and recurse down to it
	or the INTEGER_CST.  Fail on a CALL_EXPR. 
	(fold_offsetof): Pass new argument to fold_offsetof_1.
	* c-parser.c (c_parser_postfix_expression): Don't include a NULL
	operand into an INDIRECT_REF. 
	* c-typeck.c (build_unary_op): Adjust call to fold_offsetof.

cp:
2006-08-17  Paolo Bonzini  <bonzini@gnu.org>

	PR c++/28573
	* semantics.c (finish_offsetof): Add new argument to fold_offsetof.

testsuite:
2006-08-17  Paolo Bonzini  <bonzini@gnu.org>

	PR c++/28573
	* g++.dg/parse/offsetof6.C: New test.
	* g++.dg/parse/offsetof7.C: New test.

From-SVN: r116208
2006-08-17 07:02:55 +00:00
Danny Smith
55af93a8a3 re PR c/28287 (ICE with misplaced attribute weak)
gcc
	PR c/28287
	* c-common.c (handle_weak_attribute): Ignore and warn if
	not a FUNCTION_ or VAR_DECL

testsuite

	* gcc.dg/attr-invalid.c: Add tests for invalid weak attribute.

From-SVN: r116170
2006-08-15 21:46:30 +00:00
Dirk Mueller
3f0a2a47c2 c-common.c (strict_aliasing_warning): Fix formatting.
2006-08-13  Dirk Mueller  <dmueller@suse.de>

       * c-common.c (strict_aliasing_warning): Fix formatting.

From-SVN: r116109
2006-08-13 15:04:41 +00:00
Jan Hubicka
386b46cf78 re PR c/25795 (Proccessing the attribute externally_visible too early)
PR c/25795
	PR c++/27369
	* cgraph.c (cgraph_varpool_nodes): Export.
	(decide_is_variable_needed): Ignored "used" attribute in
	unit-at-a-time mode.
	* cgraph.h (cgraph_varpool_nodes): Declare.
	* cgraphunit.c (decide_is_function_needed): Ignored "used" attribute in
	unit-at-a-time mode.

	* gcc.dg/pr25795.c: New test.
	* gcc.dg/pr25795-1.c: New test.

From-SVN: r115693
2006-07-24 00:16:16 +00:00
Alexandre Oliva
e1cf56b1d9 re PR c/26993 (ICE on invalid code with weakref)
PR c/26993
* c-common.c (handle_weakref_attribute): Ignore attribute in
the same conditions the alias attribute is ignored.

From-SVN: r115545
2006-07-18 06:41:13 +00:00
Jason Merrill
1937f93932 re PR c++/13983 (no warning on some non-POD struct with packed attribute)
PR c++/13983
        PR c++/17519
        * stor-layout.c (finish_record_layout): Copy TYPE_PACKED to variants.
        * c-common.c (handle_packed_attribute): So don't copy it here.
        * c-decl.c (finish_struct): Don't copy TYPE_ALIGN.
        * cp/class.c (check_field_decls): Check TYPE_PACKED after
        stripping array types.
        (finish_struct_bits): Don't copy TYPE_SIZE here.

From-SVN: r115217
2006-07-05 22:09:02 -04:00
Jason Merrill
b9e7569630 re PR c++/26905 (default-visibility class symbol improperly resolved as hidden-visibility)
PR c++/26905
        PR c++/26612
        PR c++/27000
        PR c++/26984
        PR c++/19134
        * tree.c (build_decl_stat): Don't hande #pragma visibility here.
        * c-common.c (c_determine_visibility): Handle it here.
        * c-decl.c (finish_decl): Call c_determine_visibility for
        functions, too.
        * flags.h (enum symbol_visibility): Sort from most to least visibility.
        * tree.h: Likewise.
        * varasm.c (default_assemble_visibility): Likewise.
        * c-common.c (handle_visibility_attribute): Complain about trying
        to give visibility to an already defined class, or trying to change
        declared visibility. Always attach the attribute.
        * cp/decl2.c (determine_visibility): Overhaul.
        (determine_visibility_from_class): Likewise.
        (min_vis_r, type_visibility, constrain_visibility): New fns.
        (constrain_visibility_for_template): Likewise.
        (constrain_class_visibility): Likewise.
        * cp/decl.c (cp_finish_decl): Call determine_visibility for function
        decls, too.
        * cp/name-lookup.c (pushtag): Call determine_visibility.
        * cp/decl.c (duplicate_decls): Don't copy visibility from template to
        specialization.
        * cp/pt.c (check_explicit_specialization): Likewise.
        (lookup_template_class, tsubst_decl): Call determine_visibility.
        * cp/class.c (finish_struct_1): Call constrain_class_visibility.

        PR c++/26905
        PR c++/21675
        PR c++/17470
        * cp/parser.c (cp_parser_explicit_instantiation): Pass the attributes
        to grokdeclarator.
        (cp_parser_type_specifier): Allow 'enum __attribute ((...)) E'.
        (cp_parser_enum_specifier): Likewise.
        (cp_parser_elaborated_type_specifier): Apply attributes if this
        declares only the class.
        (cp_parser_class_specifier): Apply leading attributes immediately.
        * cp/semantics.c (begin_class_definition): Add attributes parameter,
        apply them to the type.
        * attribs.c (decl_attributes): Ignore type-in-place attributes
        once the type has been defined.

        PR c++/21581
        PR c++/25915
        * cp/tree.c (decl_anon_ns_mem_p): New function.
        * cp/cp-tree.h: Declare it.
        * cp/decl2.c (determine_visibility): Make anonymous namespace
        members static.
        (min_vis_r, constrain_visibility): Likewise.
        * cp/rtti.c (create_pseudo_type_info): Set TREE_PUBLIC on
        pseudo-types.
        * cp/decl.c (cxx_init_decl_processing): Set TREE_PUBLIC on
        global_namespace.
        * cp/name-lookup.c (push_namespace_with_attribs): Don't set TREE_PUBLIC
        on anonymous namespaces.

From-SVN: r115086
2006-06-29 21:15:56 -04:00
Martin Michlmayr
48e2909e4a re PR c/27149 (English in warning not grammatical: "the address of x, will always evaluate")
PR c/27149
	* c-common.c (c_common_truthvalue_conversion): Fix grammar in warning.

From-SVN: r114800
2006-06-20 00:22:21 +00:00
Roger Sayle
ffbf5f7f20 re PR middle-end/27382 (ICE in c_common_truthvalue_conversion with label address)
PR middle-end/27382
	* c-common.c (c_common_truthvalue_conversion): Explicitly check
	for LABEL_DECL before calling DECL_WEAK.

	PR c/27150
	* c-typeck.c (build_binary_op): Likewise, explicitly check for
	LABEL_DECL and PARM_DECL.

	* gcc.dg/pr27150-1.c: New testcase.
	* gcc.dg/pr27382-1.c: New testcase.
	* gcc.dg/pr27382-2.c: New testcase.


Co-Authored-By: Andrew Pinski <pinskia@physics.uc.edu>

From-SVN: r114380
2006-06-05 02:28:20 +00:00
Volker Reichelt
545b7d8c35 re PR c++/27601 (ICE (in fold_offsetof_1, at c-common.c:5998) on strange offsetof)
PR c++/27601
	* c-common.c (fold_offsetof_1): Handle static members.

	* g++.dg/ext/offsetof1.C: New test.

From-SVN: r114369
2006-06-04 23:42:04 +00:00
Dirk Mueller
d117b270e2 re PR c/27273 (tree check fail for legal code when convert returns a constant from an expression that was not constant)
PR c/27273
        * c-common.c (convert_and_check): only track TREE_CONSTANT_OVERFLOW
        for CONSTANT_CLASS_P expressions.

        * gcc.dg/overflow-warn-5.c: New testcase.

From-SVN: r114238
2006-05-30 13:43:55 +00:00
Volker Reichelt
694fea202c re PR c/27420 (ICE on invalid function definition)
PR c/27420
	* c-common.c (self_promoting_args_p): Skip erroneous args.

	* gcc.dg/func-args-2.c: New test.

From-SVN: r113976
2006-05-22 12:23:44 +00:00
Mike Stump
c22cacf346 Whitespace fixups
From-SVN: r113893
2006-05-18 22:16:23 +00:00
Roger Sayle
0f57299d37 c-typeck.c (parser_build_binary_op): Don't call the function unsigned_conversion_warning to spot operand/result type...
* c-typeck.c (parser_build_binary_op): Don't call the function
	unsigned_conversion_warning to spot operand/result type overflow.
	(build_binary_op): Instead, call convert_and_check instead of
	convert to report the problem when the operands are promoted.
	* c-common.c (unsigned_conversion_warning): Make static.
	* c-common.h (unsigned_conversion_warning): Delete prototype.

	* gcc.dg/Wconversion-3.c: New test case.
	* gcc.dg/Wconversion-4.c: Likewise.


Co-Authored-By: Joseph Myers <joseph@codesourcery.com>

From-SVN: r113418
2006-05-01 16:51:19 +00:00
Roger Sayle
71834ad346 common.opt (Woverflow): New command line option.
* common.opt (Woverflow): New command line option.
	* c-common.c (constant_expression_warning): Check warn_overflow.
	(overflow_waring): Pass OPT_Woverflow to warning.
	(unsigned_conversion_warning): Likewise.
	(convert_and_check): Likewise.
	* doc/invoke.texi: Document new command line option.

	* gcc.dg/Woverflow-1.c: New test case.
	* gcc.dg/Woverflow-2.c: Likewise.
	* gcc.dg/Woverflow-3.c: Likewise.

From-SVN: r113408
2006-05-01 04:27:15 +00:00
Mark Mitchell
38a4afeecd re PR c++/26534 ([4.1] bitfield wrong optimize)
2006-04-23  Mark Mitchell  <mark@codesourcery.com>

	PR c++/26534
	* c-common.h (c_build_bitfield_integer_type): Declare.
	* c-decl.c (c_build_bitfield_integer_type): Move to ...
	* c-common.c (c_build_bitfield_integer_type): ... here.

2006-04-23  Mark Mitchell  <mark@codesourcery.com>

	PR c++/26534
	* cp-tree.h (is_bitfield_expr_with_lowered_type): New function.
	* typeck.c (is_bitfield_expr_with_lowered_type): New function.
	(decay_conversion): Convert bitfield expressions to the correct
	type.
	(build_modify_expr): Remove spurious conversions.
	* class.c (layout_class_type): Modify the type of bitfields to
	indicate a limited range. 
	* call.c (standard_conversion): Adjust the type of bitfield
	expressions used in an rvalue context.
	(build_conditional_expr): Likewise.
	
2006-04-23  Mark Mitchell  <mark@codesourcery.com>

	PR c++/26534
	* g++.dg/opt/bitfield1.C: New test.
	* g++.dg/compat/abi/bitfield1_main.C: Add -w.
	* g++.dg/compat/abi/bitfield1_x.C: Likewise.
	* g++.dg/compat/abi/bitfield1_y.C: Likewise.
	* g++.dg/compat/abi/bitfield2_main.C: Likewise.
	* g++.dg/compat/abi/bitfield2_x.C: Likewise.
	* g++.dg/compat/abi/bitfield2_y.C: Likewise.
	* g++.dg/abi/bitfield1.C: Add dg-warning markers.
	* g++.dg/abi/bitfield2.C: Likewise.
	* g++.dg/init/bitfield1.C: Likewise.

From-SVN: r113199
2006-04-23 18:04:33 +00:00
Roger Sayle
c457fcec8e re PR tree-optimization/14752 ([tree-ssa] "~a" should be changed to "a" if used in the condition of an if statement)
PR middle-end/14752
	* c-common.c (c_common_truthvalue_conversion) <MINUS_EXPR,
	BIT_XOR_EXPR, BIT_AND_EXPR>: Delete.  Let fold optimize these
	cases via the construction of "expr != 0".

	* gcc.dg/fold-eqandshift-2.c: New test case.

From-SVN: r111575
2006-02-28 21:31:29 +00:00
Geoffrey Keating
c7b5e39561 Index: gcc/ChangeLog
2006-02-24  Geoffrey Keating  <geoffk@apple.com>

	* doc/tm.texi (Run-time Target): Document C_COMMON_OVERRIDE_OPTIONS.
	* doc/invoke.texi (C++ Dialect Options): Document 
	-fno-use-cxa-get-exception-ptr.
	* configure.ac: Define DEFAULT_USE_CXA_ATEXIT to 2 not 1.
	* configure: Regenerate.
	* c.opt (fuse-cxa-get-exception-ptr): New.
	* c-opts.c (c_common_handle_option): Handle
	OPT_fuse_cxa_get_exception_ptr.
	* c-common.c (flag_use_cxa_atexit): Update documentation.
	(flag_use_cxa_get_exception_ptr): New.
	* c-common.h (flag_use_cxa_get_exception_ptr): New.
	* config/rs6000/darwin.h (SUBTARGET_OVERRIDE_OPTIONS): Improve
	documentation.
	(C_COMMON_OVERRIDE_OPTIONS): New.

Index: gcc/testsuite/ChangeLog
2006-02-24  Geoffrey Keating  <geoffk@apple.com>

	* g++.dg/eh/uncaught1.C: Add dg-options for ppc-darwin.
	* g++.dg/eh/uncaught2.C: New.
	* g++.dg/eh/uncaught3.C: New.

Index: gcc/cp/ChangeLog
2006-02-24  Geoffrey Keating  <geoffk@apple.com>

	* except.c (expand_start_catch_block): Handle
	flag_use_cxa_get_exception_ptr.

From-SVN: r111427
2006-02-24 21:43:01 +00:00
Gabriel Dos Reis
d539b114d4 invoke.texi (-Write-strings): Document that it is enabled by default.
2006-02-12  Gabriel Dos Reis  <gdr@integrable-solutions.net>

        * doc/invoke.texi (-Write-strings): Document that it is
	enabled by
        default. 
        * c.opt (-Wwrite-strings): Declare variable
	warn_write_strings.
        Clarify documentation.
        * c-common.h (warn_write_strings): Remove.
        * c-common.c (warn_write_strings): Likewise.
        * c-opts.c (c_common_init_options): Enable -Wwrite-strings by
        default for C++.

testsuite/
2006-02-12  Gabriel Dos Reis  <gdr@integrable-solutions.net>

        * g++.dg/warn/no-write-strings.C: New test.
        * g++.dg/warn/write-strings.C: Likewise.
        * g++.dg/warn/write-strings-default.C: Likewise.

From-SVN: r110907
2006-02-13 01:57:29 +00:00
Gabriel Dos Reis
cfb10bd3ba c-common.h (flag_const_strings): Don't declare.
2006-02-09  Gabriel Dos Reis  <gdr@integrable-solutions.net>

        * c-common.h (flag_const_strings): Don't declare.
        * c-common.c (flag_const_strings): Remove.
        * c.opt (fconst_strings): Remove.
        * c-opts.c (c_common_handle_option): Remove
        * <OPT_fconst_strings>.
        <OPT_Wwrite_strings>: Don't set flag_const_strings.
        (c_common_init_options): Don't set flag_const_strings.
        * doc/invoke.texi (-fno-const-strings): Remove documentation.

cp/
2006-02-09  Gabriel Dos Reis  <gdr@integrable-solutions.net>

        * typeck.c (string_conv_p): Don't test for flag_const_strings.

testsuite/ 
2006-02-09  Gabriel Dos Reis  <gdr@integrable-solutions.net>

        * g++.old-deja/g++.benjamin/15351-2.C: Likewise.
        * g++.old-deja/g++.benjamin/15351-1.C: Remove.

From-SVN: r110804
2006-02-09 16:28:26 +00:00
Zack Weinberg
89a42ac8a1 c.opt: Add -W(no-)overlength-strings.
gcc:
	* c.opt: Add -W(no-)overlength-strings.
	* doc/invoke.texi: Document it.
	* c-opts.c (c_common_handle_option): -pedantic implies
	-Woverlength-strings, if not explicitly disabled already.
	(c_common_post_options): -Woverlength-strings defaults to off, and
	is always off for C++.
	* c-common.c (fix_string_type): Issue warning about strings longer
	than is portable only if warn_overlength_strings.  Rearrange code
	a little for clarity.
	* configure.in: Check for -Wno-overlength-strings as well before
	enabling -pedantic in stage 1.
	* Makefile.in (STRICT2_WARN): Add -Wno-overlength-strings.
	(gcc.o-warn, insn-automata.o-warn, build/gencondmd.o-warn): Delete.

	* genconditions.c (write_header, write_one_condition)
	(write_conditions, write_writer): Consolidate very long strings
	that were broken up to fit in C89 portable limit.  Don't use
	printf when fputs will do.

gcc/testsuite:
	* gcc.dg/Woverlength-strings.c
	* gcc.dg/Woverlength-strings-pedantic-c89.c
	* gcc.dg/Woverlength-strings-pedantic-c89-no.c
	* gcc.dg/Woverlength-strings-pedantic-c99.c
	* gcc.dg/Woverlength-strings-pedantic-c99-no.c: New tests.

==================================================================

From-SVN: r110360
2006-01-29 03:30:47 +00:00
Andrew Pinski
f6f083604b re PR c/25861 (tree check fail at c-common.c:2430)
2006-01-26  Andrew Pinski  <pinskia@physics.uc.edu>

        PR C/25861
        * c-common.c (c_common_truthvalue_conversion) <case ADDR_EXPR>:
        Use a new variable, inner.  PARM_DECLs are always non-weak.

2006-01-26  Andrew Pinski  <pinskia@physics.uc.edu>

        PR C/25861
        * gcc.c-torture/compile/pr25861.c: New test.

From-SVN: r110256
2006-01-26 06:59:26 -08:00
Dirk Mueller
74ac79fa80 re PR c++/5520 (Add a warning to detect empty body of if statements (like in the C frontend))
2006-01-20  Dirk Mueller  <dmueller@suse.com>

        PR c++/5520
        * c-parser.c (c_parser_if_body): Use build_empty_stmt()
        instead of a special NOP marker.
        * c-typeck.c (c_finish_if_stmt): Remove obsoleted special
        NOP marker handling.
        * c-common.h (empty_body_warning): Add forward declaration.
        * c-common.c (empty_body_warning): Add (from c_finish_if_stmt).
        Now uses IS_EMPTY_STMT() instead of special NOP markers.

        * semantics.c (finish_if_stmt): Call empty_body_warning.
        * parser.c (cp_parser_implicitly_scoped_statement):
        Mark empty statement with an empty stmt.

        * g++.dg/warn/empty-body.C: New.

From-SVN: r110019
2006-01-20 09:30:22 +00:00
Richard Henderson
bc4071dd66 directives.c (struct pragma_entry): Add is_deferred.
libcpp/
	* directives.c (struct pragma_entry): Add is_deferred.  Add ident
	entry to value union.
	(end_directive): Don't eat the line if in_deferred_pragma.
	(run_directive): Remove pragma hacks.
	(insert_pragma_entry): Remove.
	(new_pragma_entry): New.
	(register_pragma_1): Split out of register_pragma.  Only handle
	the lookup tree and return the new entry.
	(cpp_register_pragma): Fill in the pragma entry here.
	(cpp_register_deferred_pragma): New.
	(register_pragma_internal): New.
	(_cpp_init_internal_pragmas): Use register_pragma_internal.
	(do_pragma): Allow pragma expansion after namespace.  For deferred
	pragmas, don't slurp the line into a string.
	(destringize_and_run): Save tokens for deferred pragmas.
	(cpp_handle_deferred_pragma): Remove.
	* macro.c (builtin_macro): Remove pragma token hack.
	(_cpp_push_token_context): Rename from push_token_context and export.
	* internal.h (struct lexer_state): Add pragma_allow_expansion.
	(_cpp_push_token_context): Declare.
	* lex.c (_cpp_lex_token): Allow _cpp_handle_directive to return
	a token.  Update the line number correctly if so.
	(_cpp_lex_direct): Emit CPP_PRAGMA_EOL tokens.
	(cpp_token_val_index): Return CPP_TOKEN_FLD_PRAGMA for pragmas.
	* include/cpplib.h (PRAGMA_EOL): New.
	(CPP_TOKEN_FLD_PRAGMA): New.
	(struct cpp_token): Add val.pragma.
	(struct cpp_options): Remove defer_pragmas.
	(cpp_handle_deferred_pragma): Remove.
	(cpp_register_deferred_pragma): Declare.

gcc/
	* c-lex.c (c_lex_with_flags) <CPP_PRAGMA>: Smuggle pragma id
	via integer constant.
	(pragma_lex): Remove.
	* c-pch.c (c_common_pch_pragma): Accept the name as an argument,
	rather than parsing it.
	* c-pragma.c (handle_pragma_weak, handle_pragma_redefine_extname,
	handle_pragma_extern_prefix): Add %< %> quotes.
	(registered_pragmas): New.
	(c_register_pragma_1): New.
	(c_register_pragma): Use it.
	(c_register_pragma_with_expansion): Likewise.
	(c_invoke_pragma_handler): New.
	(init_pragma): Use cpp_register_deferred_pragma directly for
	pch_preprocess.
	* c-pragma.h (enum pragma_kind): New.
	(pragma_handler): New.
	(c_invoke_pragma_handler): Declare.
	* c-common.c (c_parse_error): Pretty print CPP_PRAGMA and
	CPP_PRAGMA_EOL.
	* c-common.h (c_common_pch_pragma): Update decl.
	* Makefile.in (c-parser.o): Update dependencies.
	(GTFILES): Add c-pragma.h.
	* c-parser.c (struct c_token): Add pragma_kind.
	(struct c_parser): Add in_pragma.
	(c_lex_one_token): Always initialize keyword and pragma_kind.
	Extract data for CPP_PRAGMA.
	(c_parser_peek_2nd_token): Deny CPP_PRAGMA_EOL.
	(c_parser_consume_token): Don't allow CPP_PRAGMA unless errors.
	Don't allow CPP_PRAGMA_EOL if in_pragma.
	(c_parser_consume_pragma): New.
	(c_parser_skip_until_found): Stop on CPP_PRAGMA_EOL.
	(c_parser_skip_to_end_of_parameter): Likewise.
	(c_parser_skip_to_end_of_block_or_statement): Likewise.
	(c_parser_skip_to_pragma_eol): New.
	(c_parser_external_declaration): Handle CPP_PRAGMA.
	(c_parser_compound_statement_nostart): Likewise.
	(c_parser_statement_after_labels): Likewise.
	(c_parser_pragma): New.
	(pragma_lex): Likewise.
	(c_parser_pragma_pch_preprocess): New.
	(c_parser_new): Merge into ...
	(c_parse_file): ... here.  Call c_parser_pragma_pch_preprocess.

gcc/cp/
	* lex.c (handle_pragma_java_exceptions): Fix whitespace.
	* parser.c (struct cp_token): Add pragma_kind.
	(eof_token): Update to match.
	(struct cp_lexer): Add in_pragma; rearrange next for better packing.
	(cp_parser_initial_pragma): New.
	(cp_lexer_new_main): Use it.  Don't bother clearing
	c_lex_return_raw_strings.
	(cp_lexer_get_preprocessor_token): Always initialize keyword
	and pragma_kind fields.  Handle CPP_PRAGMA.
	(cp_lexer_consume_token): Don't allow CPP_PRAGMA_EOL when 
	in_pragma is set.
	(cp_lexer_handle_pragma): Remove.  Update callers to cp_parser_pragma.
	(cp_lexer_print_token) <CPP_PRAGMA>: Don't print as a string.
	(cp_parser_skip_to_pragma_eol): New.
	(cp_parser_error): Use it.
	(cp_parser_skip_to_closing_parenthesis): Stop at CPP_PRAGMA_EOL;
	rearrange with switch statement.
	(cp_parser_skip_to_end_of_statement): Likewise.
	(cp_parser_skip_to_end_of_block_or_statement): Likewise.
	(cp_parser_skip_to_closing_brace): Likewise.
	(cp_parser_skip_until_found): Likewise.
	(cp_parser_statement): Add in_compound argument; update callers.
	Use it to decide how to handle pragma parsing.
	(cp_parser_labeled_statement): Add in_compound argument; pass
	it on to cp_parser_statement.
	(cp_parser_statement_seq_opt): Stop at CPP_PRAGMA_EOL.
	(cp_parser_declaration_seq_opt): Likewise.
	(cp_parser_parameter_declaration): Likewise.
	(cp_parser_member_specification_opt): Likewise.
	(cp_parser_function_definition_after_decl): Likewise.
	(cp_parser_cache_group): Handle CPP_PRAGMA/CPP_PRAGMA_EOL pairs.
	(cp_parser_pragma): New.
	(pragma_lex): New.

gcc/testsuite/
	* g++.dg/parse/pragma2.C: Update expected error lines.

From-SVN: r109336
2006-01-04 08:33:38 -08:00
Jakub Jelinek
ee8960e558 re PR c/25559 (Internal compiler error when specifying vector_size(2) of int)
PR c/25559
	* c-common.c (handle_vector_size_attribute): Reject zero vector size
	as well as sizes not multiple of component size.

	* gcc.dg/pr25559.c: New test.

From-SVN: r109316
2006-01-04 09:07:09 +01:00
Mark Mitchell
3b2db49f36 PR c++/23171, c++/23172, c++/25417.
* c-decl.c (compound_literal_number): Remove.
	(build_compound_literal): Use set_compound_literal_name.
	* c-common.c (compound_literal_number): New variable.
	(set_compound_literal_name): New function.
	* c-common.h (set_compound_literal_name): Declare.

	PR c++/23171, c++/23172, c++/25417.
	* typeck.c (build_unary_op): Create temporary variables for
	compound literals whose addresses are taken.
	* init.c (expand_aggr_init_1): Use COMPOUND_LITERAL_P.
	* decl.c (reshape_init_vector): Likewise.
	(reshape_init): Give it external linkage.
	(check_initializer): Use COMPOUND_LITERAL_P.
	(initialize_artificial_var): Allow the initializer to be a
	CONSTRUCTOR.
	* call.c (make_temporary_var_for_ref_to_temp): Use
	create_temporary_var.
	* cp-tree.h (COMPOUND_LITERAL_P): New macro.
	(rehape_init): Declare.
	* typeck2.c (digest_init): Use COMPOUND_LITERAL_P.
	* semantics.c (finish_compound_literal): Use reshape_init.

	PR c++/23172
	* g++.dg/ext/complit4.C: New test.

	PR c++/25417
	* g++.dg/ext/complit5.C: Likewise.

From-SVN: r109075
2005-12-27 06:09:13 +00:00
Jakub Jelinek
a0274e3e23 backport: builtins.def: Move all DEF_SYNC_BUILTIN to ...
Merge from gomp-branch.
        * builtins.def: Move all DEF_SYNC_BUILTIN to ...
        * sync-builtins.def: ... new file.
        (BUILT_IN_FETCH_AND_ADD_16,
        BUILT_IN_FETCH_AND_SUB_16, BUILT_IN_FETCH_AND_OR_16,
        BUILT_IN_FETCH_AND_AND_16, BUILT_IN_FETCH_AND_XOR_16,
        BUILT_IN_FETCH_AND_NAND_16, BUILT_IN_ADD_AND_FETCH_16,
        BUILT_IN_SUB_AND_FETCH_16, BUILT_IN_OR_AND_FETCH_16,
        BUILT_IN_AND_AND_FETCH_16, BUILT_IN_XOR_AND_FETCH_16,
        BUILT_IN_NAND_AND_FETCH_16, BUILT_IN_BOOL_COMPARE_AND_SWAP_16,
        BUILT_IN_VAL_COMPARE_AND_SWAP_16, BUILT_IN_LOCK_TEST_AND_SET_16,
        BUILT_IN_LOCK_RELEASE_16): New builtins.
        * builtin-types.def (BT_I16, BT_FN_I16_VPTR_I16,
        BT_FN_BOOL_VPTR_I16_I16, BT_FN_I16_VPTR_I16_I16): Add.
        * builtins.c (expand_builtin): Handle sync BUILT_IN_*_16 builtins.
        * c-common.c (enum c_builtin_type): Move to top-level from
        c_common_nodes_and_builtins enum builtin_type.
        (builtin_types): Move from c_common_nodes_and_builtins.
        (def_fn_type): New.
        (c_common_nodes_and_builtins): Use it.
        (def_builtin_1): Check for error_mark_node.
        (sync_resolve_size): Handle also 128 bit sync builtins.
        * Makefile.in (BUILTINS_DEF): New.  Use it instead of builtins.def.

        * config/i386/i386.h (x86_cmpxchg8b, x86_cmpxchg16b): New decls.
        (TARGET_CMPXCHG8B, TARGET_CMPXCHG16B): Define.
        * config/i386/i386.c (x86_cmpxchg8b, x86_cmpxchg16b): New variables.
        * config/i386/sync.md (CASMODE, DCASMODE): New mode macros.
        (doublemodesuffix, DCASHMODE): New mode attrs.
        (sync_compare_and_swap<mode>): Change into expand, use CASMODE
        instead of IMODE, if mode is wider than a word, expand into
        sync_double_compare_and_swap*.
        (*sync_compare_and_swap<mode>): New insn.
        (sync_double_compare_and_swap<mode>): Likewise.
        (*sync_double_compare_and_swapdi_pic): Likewise.
        (sync_compare_and_swap_cc<mode>): Use CASMODE instead of IMODE, if
        mode is wider than a word, expand into
        sync_double_compare_and_swap_cc*.
        (sync_double_compare_and_swap_cc<mode>): New insn.
        (*sync_double_compare_and_swap_ccdi_pic): Likewise.

From-SVN: r108997
2005-12-22 16:43:34 -08:00
Jon Grimm
9a8ce21f3b target-def.h (TARGET_DECIMAL_FLOAT_SUPPORTED_P): New.
2005-12-16  Jon Grimm  <jgrimm2@us.ibm.com>
	    Janis Johnson  <janis187@us.ibm.com>
	    Ben Elliston  <bje@au.ibm.com>

	* target-def.h (TARGET_DECIMAL_FLOAT_SUPPORTED_P): New.
	(TARGET_INITIALIZER): Add TARGET_DECIMAL_FLOAT_P.
	* target.h (struct gcc_target): Add decimal_float_supported_p.
	* targhooks.c (default_scalar_mode_supported_p): Handle
	MODE_DECIMAL_FLOAT.
	* builtins.def: Add new builtins for 32, 64 and 128 bit variants
	of inf, nan, finite, isinf and isnan.
	* builtin-types.def (BT_DFLOAT32, BT_DFLOAT64, BT_DFLOAT128,
	BT_DFLOAT32_PTR, BT_DFLOAT64_PTR, BT_DFLOAT128_PTR,
	BT_FN_DFLOAT32, BT_FN_DFLOAT64, BT_FN_DFLOAT128,
	BT_FN_INT_DFLOAT32, BT_FN_INT_DFLOAT64, BT_FN_INT_DFLOAT128,
	BT_FN_DFLOAT32_CONST_STRING, BT_FN_DFLOAT64_CONST_STRING,
	BT_FN_DFLOAT32_CONST_STRING, BT_FN_DFLOAT32_DFLOAT32,
	BT_FN_DFLOAT64_DFLOAT64, BT_FN_DFLOAT128_DFLOAT128): New.
	* c-decl.c (declspecs_add_type): Verify combos on type qualifiers.
	Pedwarn if decimal floating point types are used.  Error if
	decimal floating point is not supported by the target.
	(finish_declspecs): Return type from DFP typespec_word.
	* c-typeck.c (c_common_type): Choose the decimal floating point
	type with the greater precision when determining a common type.
	(convert_arguments): Warn if there is a mismatch between argument
	and prototype for decimal float types.  Warn of conversions with
	binary float types and of precision narrowing due to prototype.
	* c-parser.c (reswords): Add _Decimal32, _Decimal64, _Decimal128.
	(c_token_starts_typename): Handle RID_DFLOAT32/64/128.
	(c_token_starts_declspecs): Likewise.
	(c_parser_attributes): Likewise.
	* c-common.h (enum rid): Add new enumeration values RID_DFLOAT32,
	RID_DFLOAT64, RID_DFLOAT128.
	(T_D32, TEX_D32, T_D64, TEX_D64, T_D128, TEX_D128): New macros.
	* c-common.c (c_common_type_for_mode): Handle decimal float modes.
	(shorten_compare): Convert DFP/BFP operands to a common type.
	(c_common_modes_and_builtins): Register built-in decimal float
	types if the target supports them.
	(handle_mode_addtribute): Handle MODE_DECIMAL_FLOAT.
	* builtins.c (fold_builtin_1): Handle 32, 64 and 128 bit cases of
	inf, nan, finite, isinf and isnan builtins.
	* c-cppbuiltin.c (builtin_define_decimal_float_constants): New.
	(builtin_define_float_constants): Assert non-decimal radix.
	(c_cpp_builtins): Register built-in __DEC_EVAL_METHOD__ define.
	Call builtin_define_decimal_float_constants for each type.
	* c-lex.c (interpret_float): Decode decimal float types from CPP_N
	flags.  Use real_from_string3, which can handle binary or decimal
	floats.
	* c-tree.h (enum c_typespec_keyword): Add cts_dfloat32,
	cts_dfloat64, cts_dfloat128.
	* tree.c (build_common_tree_nodes_2): Add decimal float types.
	* tree.h (enum tree_index): Add new enumeration values
	TI_DFLOAT32_TYPE, TI_DFLOAT64_TYPE, TI_DFLOAT128_TYPE,
	TI_DFLOAT32_PTR_TYPE, TI_DFLOAT64_PTR_TYPE, TI_DFLOAT128_PTR_TYPE.
	(dfloat32_type_node): New macro.
	(dfloat64_type_node, dfloat128_type_node): Likewise.
	(dfloat32_ptr_type_node, dfloat64_ptr_type_node): Likewise.
	(dfloat128_ptr_type_node): Likewise.
	* c-pretty-print.c (pp_c_floating_constant): Append 32, 64 and 128
	bit decimal floating point types with "df", "dd" and "dl".
	* c-format.h (enum format_lengths): Add new enumeration values
	FMT_LEN_H, FMT_LEN_D and FMT_LEN_DD.
	* c-format.c (printf_length_specs, scanf_length_specs): Add
	entries for H, D, DD.
	(print_char_table, scan_char_table): Use new entries.
	(asm_fprintf_char_table, gcc_diag_char_table,
	gcc_cdiag_char_table, gcc_cxxdiag_char_table): Adjust for longer
	length arrays.
	* defaults.h (DECIMAL32_TYPE_SIZE): Define.
	(DECIMAL64_TYPE_SIZE): Likewise.
	(DECIMAL128_TYPE_SIZE): Likewise.
	(TARGET_DEC_EVAL_METHOD): Likewise.
	* doc/extend.texi (Decimal Float): New node.
	(Constructing Calls): Document decimal float built-ins.
	* doc/tm.texi: Document TARGET_DECIMAL_FLOAT_SUPPORTED_P hook.
	* Makefile.in (USER_H): Add $(srcdir)/ginclude/decfloat.h.
	* ginclude/decfloat.h: New file.

Co-Authored-By: Ben Elliston <bje@au.ibm.com>
Co-Authored-By: Janis Johnson <janis187@us.ibm.com>

From-SVN: r108629
2005-12-16 17:38:26 +11:00
Ben Elliston
690a704a4e c-common.c (c_common_truthvalue_conversion): Generalise warning for addresses converted to booleans; not just function addresses.
* c-common.c (c_common_truthvalue_conversion): Generalise warning
	for addresses converted to booleans; not just function addresses.
	* c-typeck.c (build_binary_op): Warn for address comparisons which
	can never be NULL (eg. func == NULL or &var == NULL).
	* common.opt (Walways-true): New option.
	* c-opts.c (c_common_handle_option): Set it with -Wall.
	* doc/invoke.texi: Document it.
testsuite/
	* gcc.dg/warn-addr-cmp.c: New test.

From-SVN: r108489
2005-12-14 10:33:26 +11:00
Geoffrey Keating
a9b0b82578 Index: gcc/ChangeLog
2005-12-05  Geoffrey Keating  <geoffk@apple.com>

	* varasm.c (default_binds_local_p_1): Weakrefs don't bind locally.
	A hidden weak object does bind locally.  Strong linkonce data
	counts like any other strong symbol for binding.
	(weak_finish_1): Don't specially handle weakrefs, they no longer
	arrive here.
	(assemble_alias): Weakrefs can't be TREE_PUBLIC yet.
	* c-common.c (handle_alias_attribute): Allow static aliases
	of variables.
	(handle_weakref_attribute): Don't call declare_weak on weakrefs.
	* gthr-dce.h: Make weakrefs static.
	* gthr-tpf.h: Likewise.
	* gthr-solaris.h: Likewise.
	* gthr-posix.h: Likewise.
	* gthr-posix95.h: Likewise.
	* config/darwin.c (darwin_encode_section_info): static weakref
	variables are not necessarily defined in this translation unit.
	* doc/extend.texi (Function Attributes): Mention that an alias
	attribute creates a definition for the thing it's attached to.
	Change the documentation for weakref to say that the thing
	it's attached to must be static.

Index: gcc/testsuite/ChangeLog
2005-12-05  Geoffrey Keating  <geoffk@apple.com>

	* g++.old-deja/g++.abi/vtable2.C: Make weakrefs static.
	* gcc.dg/attr-weakref-1.c: Modify to not try to test public weakrefs,
	and to work on Darwin.
	* gcc.dg/attr-weakref-1b.c: New file.
	* gcc.dg/attr-weakref-2.c: New test.
	* gcc.dg/darwin-weakref-1.c: New test.

From-SVN: r108074
2005-12-05 20:38:37 +00:00
Joseph Myers
1344f9a318 c-common.c (binary_op_error): Do not allow NOP_EXPR.
* c-common.c (binary_op_error): Do not allow NOP_EXPR.
	(c_common_truthvalue_conversion): Handle NOP_EXPR the same as
	CONVERT_EXPR.
	(check_function_arguments_recurse): Allow both NOP_EXPR and
	CONVERT_EXPR but check conversions preserve precision.
	* c-typeck.c (pointer_diff): Allow both NOP_EXPR and CONVERT_EXPR
	but check conversions preserve precision.
	(build_unary_op): Don't allow NOP_EXPR.  Use gcc_unreachable () in
	default case.

testsuite:
	* gcc.dg/format/cast-1.c: New test.

From-SVN: r108020
2005-12-04 21:45:41 +00:00
Joseph Myers
4c7a6c1bdb c-common.c (c_sizeof_or_alignof_type): Use fold_convert instead of building a NOP_EXPR.
* c-common.c (c_sizeof_or_alignof_type): Use fold_convert instead
	of building a NOP_EXPR.
	(c_alignof_expr): Likewise.  Handle CONVERT_EXPR the same as
	NOP_EXPR.
	* c-convert.c (convert): Use fold_convert instead of building
	NOP_EXPRs and CONVERT_EXPRs directly.  Don't special case
	c_objc_common_truthvalue_conversion returning a NOP_EXPR.  Remove
	#if 0 code.
	* c-pretty-print.c (pp_c_cast_expression, pp_c_expression): Handle
	NOP_EXPR the same as CONVERT_EXPR.
	* c-typeck.c (build_function_call): Use fold_convert instead of
	building a NOP_EXPR directly.
	(build_compound_expr): Handle NOP_EXPR the same as CONVERT_EXPR.

testsuite:
	* gcc.dg/cast-pretty-print-1.c: New test.

From-SVN: r108001
2005-12-03 18:58:43 +00:00
Gabriel Dos Reis
5d352b2d0a re PR c++/13384 (error: non-lvalue in assignment - message a little misleading for C++)
PR c/13384
        * c-common.c (lvalue_error): Fix wording.
testsuite/
        PR c/13384
        * gcc.dg/pr17730-1.c: Adjust.
        * gcc.dg/lvalue1.c (main): Likewise.
        * gcc.dg/lvalue-2.c: Likewise.
        * g++.dg/pr7503-3.C

From-SVN: r107816
2005-12-01 12:00:17 +00:00
Nathan Sidwell
646c083546 re PR c++/21166 (g++ gives error on reference to packed structure elements)
.:	PR c++/21166
	* c-decl.c (finish_struct):  Only set DECL_PACKED on a field
	when its natural alignment is > BITS_PER_UNIT.
	* stor-layout.c (finalize_type_size): Revert my patch of 2005-08-08.
	* c-common.c (handle_packed_attribute): Ignore packing on a field
	whose type is naturally char aligned.
cp:
	PR c++/21166
	* class.c (check_field_decls): Only set DECL_PACKED on a field
	when its natural alignment is > BITS_PER_UNIT.

From-SVN: r107599
2005-11-28 10:34:30 +00:00
Richard Guenther
bbee4b6468 c-common.c (strict_aliasing_warning): Handle all component-ref like accesses.
2005-11-28  Richard Guenther  <rguenther@suse.de>

	* c-common.c (strict_aliasing_warning): Handle all
	component-ref like accesses.

	* gcc.dg/alias-9.c: New testcase.
	* g++.dg/warn/Wstrict-aliasing-7.C: Likewise.

From-SVN: r107598
2005-11-28 10:00:55 +00:00
Richard Guenther
de9c56a4dc re PR c++/14024 (g++ isn't reporting aliasing warnings)
2005-11-24  Richard Guenther  <rguenther@suse.de>
	Dirk Mueller <dmueller@suse.de>

	PR c++/14024
	* c-common.h (strict_aliasing_warning): Declare.
	* c-common.c (strict_aliasing_warning): New function,
	split out from ...
	* c-typeck.c (build_c_cast): ... here.

	* typeck.c (build_reinterpret_cast_1): Use it.

	* g++.dg/warn/Wstrict-aliasing-1.C: New testcase.
	* g++.dg/warn/Wstrict-aliasing-2.C: Likewise.
	* g++.dg/warn/Wstrict-aliasing-3.C: Likewise.
	* g++.dg/warn/Wstrict-aliasing-4.C: Likewise.
	* g++.dg/warn/Wstrict-aliasing-5.C: Likewise.
	* g++.dg/warn/Wstrict-aliasing-6.C: Likewise.

Co-Authored-By: Dirk Mueller <dmueller@suse.de>

From-SVN: r107459
2005-11-24 10:48:15 +00:00
Gabriel Dos Reis
ff6b664150 re PR c++/21667 (misleading warning about array subscription)
2005-11-23  Gabriel Dos Reis  <gdr@integrable-solutions.net>

        PR c++/21667
        * c-typeck.c (build_array_ref): Avoid code duplicate.  Use
        common
        C/C++ diagnostic function warn_array_subscript_with_type_char.
        * c-common.h (warn_array_subscript_with_type_char): Declare.
        * c-common.c (warn_array_subscript_with_type_char): Define.

cp/
2005-11-23  Gabriel Dos Reis  <gdr@integrable-solutions.net>

        PR c++/21667
        * typeck.c (build_array_ref): Avoid code duplicate.  Use
        common
        C/C++ diagnostic function warn_array_subscript_with_type_char.

testsuite/
2005-11-23  Gabriel Dos Reis  <gdr@integrable-solutions.net>

        PR c++/21667
        * gcc.dg/Wchar-subscripts.c: New.
        * g++.dg/warn/Wchar-subscripts.C: Likewise.

From-SVN: r107448
2005-11-24 02:02:26 +00:00
Richard Henderson
10e6657a20 c-common.c, [...]: Revert 2005-11-18 lookup_name patch.
gcc/
        * c-common.c, config/darwin-c.c, c-decl.c, c-tree.h, c-objc-common.h,
        langhooks-def.h, langhooks.h: Revert 2005-11-18 lookup_name patch.
        * c-tree.h (lookup_name): Move declaration ...
        * c-common.h (lookup_name): ... here.
        * config/darwin-c.c: Include c-common.h.
        * config/t-darwin: Update dependencies.
gcc/cp/
        * cp-objcp-common.h, name-lookup.c, name-lookup.h: Revert 11-18 patch.
        * name-lookup.c (lookup_name): Remove prefer_type argument.
        (lookup_name_prefer_type): New.
        * decl.c (lookup_and_check_tag): Use them.
        * pt.c (tsubst_friend_class): Likewise.
        (lookup_template_class): Likewise.
        (tsubst_copy_and_build): Likewise.
        * name-lookup.h (lookup_name_prefer_type): New.
        (lookup_name): Remove declaration.

From-SVN: r107325
2005-11-21 13:27:29 -08:00