2004-04-08  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

	* trans.c (tree_transform): Shortcut returning error_mark_node for
	statements in annotate_only_mode.
	(tree_transform, case N_Label, case N_Return_Statement,
	N_Goto_Statement): Make statement tree instead of generating code.
	(tree_transform, case N_Assignment_Statement): No longer check
	type_annotate_only.
	(gnat_expand_stmt, case GOTO_STMT, case LABEL_STMT, case
	RETURN_STMT): New.
	(first_nondeleted_insn, build_block_stmt, make_expr_stmt_from_rtl):
	New fcns.
	(gnat_to_gnu): Collect any RTL generated and deal with it.
	(tree_transform, case N_And_Then): Refine when have non-null RTL_EXPR.
	(tree_transform case N_If_Statement): Rewrite to make IF_STMT.
	(gnat_expand_stmt, case BLOCK_STMT, IF_STMT): New cases.

	* ada-tree.def (GOTO_STMT, LABEL_STMT, RETURN_STMT): New tree nodes.

	* ada-tree.def (EXPR_STMT): Fix typo in name.
	(BLOCK_STMT, IF_STMT): New nodes.

	* ada-tree.h (GOTO_STMT_LABEL, LABEL_STMT_LABEL,
	LABEL_STMT_FIRST_IN_EH): New macros.
	(RETURN_STMT_EXPR): Likewise.

	* ada-tree.h: (BLOCK_STMT_LIST, IF_STMT_COND, IF_STMT_TRUE,
	IF_STMT_ELSEIF, IF_STMT_ELSE): New macros.

2004-04-08  Thomas Quinot  <quinot@act-europe.fr>

	* atree.ads: Correct documentation on extended nodes.

	* link.c: Set run_path_option for FreeBSD.

2004-04-08  Vincent Celier  <celier@gnat.com>

	* mlib-prj.adb (Build_Library.Check_Libs): On OpenVMS, if dec.ali is
	one of the ALI file, do not link with DEC lib.

	* par.adb Remove the last two characters ("%s" or "%b") when checking
	if a language defined unit may be recompiled.

2004-04-08  Ed Schonberg  <schonberg@gnat.com>

	* sem_ch4.adb (Remove_Abstract_Operations): Improve error message when
	removal of abstract operation leaves no possible interpretation for
	expression.

	* sem_eval.adb (Eval_Qualified_Expression): Use
	Set_Raises_Constraint_Error on node when needed, so that it does not
	get optimized away by subsequent optimizations.

	* sem_res.adb (Resolve_Intrinsic_Operator): Save interpretations of
	operands even when they are not wrapped in a type conversion.

2004-04-08  Olivier Hainque  <hainque@act-europe.fr>

	* sem_prag.adb (Set_Exported): Warn about making static as result of
	export only when the export is coming from source. This may be not
	be true e.g. on VMS where we expand export pragmas for exception codes
	together with imported or exported exceptions, and we don't want the
	user to be warned about something he didn't write.

2004-04-08  Thomas Quinot  <quinot@act-europe.fr>

	* sem_util.adb (Note_Possible_Modification): Reorganize to remove code
	duplication between normal entities and those declared as renamings.
	No functional change.

	* s-fileio.ads (Form): Remove pragma Inline, as we cannot currently
	inline functions returning an unconstrained result.

2004-04-08  Eric Botcazou  <ebotcazou@act-europe.fr>

	* utils.c (type_for_mode): Handle BLKmode and VOIDmode properly, to
	conform to what other front-ends do.

2004-04-08  Doug Rupp  <rupp@gnat.com>

	* 5vml-tgt.adb: Use Gas instead of VMS Macro to build auto init shared
	libraries.

From-SVN: r80504

2004-04-07  H.J. Lu  <hongjiu.lu@intel.com>

	* config/ia64/ia64.c (ia64_encode_section_info): Don't prod
	global register variables.

From-SVN: r80501

From-SVN: r80496

time_members.cc (__timepunct<char>::_M_initialize_timepunct, [...]): the correct _M_amonth07 in the "C" locale is "Jul" and L"Jul", respectively.

2004-04-07  Paolo Carlini  <pcarlini@suse.de>

	* config/locale/generic/time_members.cc
	(__timepunct<char>::_M_initialize_timepunct,
	__timepunct<wchar_t>::_M_initialize_timepunct): the correct
	_M_amonth07 in the "C" locale is "Jul" and L"Jul", respectively.
	* config/locale/gnu/time_members.cc
	(__timepunct<char>::_M_initialize_timepunct,
	__timepunct<wchar_t>::_M_initialize_timepunct): Ditto.
	* testsuite/22_locale/time_get/get_monthname/char/4.cc: New.
	* testsuite/22_locale/time_get/get_monthname/wchar_t/4.cc: New.

	* testsuite/22_locale/time_get/date_order/char/1.cc: Remove junk.
	* testsuite/22_locale/time_get/date_order/wchar_t/1.cc: Ditto.
	* testsuite/22_locale/time_get/get_date/char/1.cc: Ditto.
	* testsuite/22_locale/time_get/get_date/char/2.cc: Ditto.
	* testsuite/22_locale/time_get/get_date/wchar_t/1.cc: Ditto.
	* testsuite/22_locale/time_get/get_date/wchar_t/2.cc: Ditto.
	* testsuite/22_locale/time_get/get_monthname/char/1.cc: Ditto.
	* testsuite/22_locale/time_get/get_monthname/char/2.cc: Ditto.
	* testsuite/22_locale/time_get/get_monthname/wchar_t/1.cc: Ditto.
	* testsuite/22_locale/time_get/get_monthname/wchar_t/2.cc: Ditto.
	* testsuite/22_locale/time_get/get_time/char/1.cc: Ditto.
	* testsuite/22_locale/time_get/get_time/char/2.cc: Ditto.
	* testsuite/22_locale/time_get/get_time/wchar_t/1.cc: Ditto.
	* testsuite/22_locale/time_get/get_time/wchar_t/2.cc: Ditto.
	* testsuite/22_locale/time_get/get_weekday/char/1.cc: Ditto.
	* testsuite/22_locale/time_get/get_weekday/char/2.cc: Ditto.
	* testsuite/22_locale/time_get/get_weekday/wchar_t/1.cc: Ditto.
	* testsuite/22_locale/time_get/get_weekday/wchar_t/2.cc: Ditto.
	* testsuite/22_locale/time_get/get_year/char/1.cc: Ditto.
	* testsuite/22_locale/time_get/get_year/wchar_t/1.cc: Ditto.
	* testsuite/22_locale/time_put/put/char/1.cc: Ditto.
	* testsuite/22_locale/time_put/put/char/2.cc: Ditto.
	* testsuite/22_locale/time_put/put/char/3.cc: Ditto.
	* testsuite/22_locale/time_put/put/char/4.cc: Ditto.
	* testsuite/22_locale/time_put/put/char/5.cc: Ditto.
	* testsuite/22_locale/time_put/put/char/6.cc: Ditto.
	* testsuite/22_locale/time_put/put/char/7.cc: Ditto.
	* testsuite/22_locale/time_put/put/char/8.cc: Ditto.
	* testsuite/22_locale/time_put/put/wchar_t/1.cc: Ditto.
	* testsuite/22_locale/time_put/put/wchar_t/2.cc: Ditto.
	* testsuite/22_locale/time_put/put/wchar_t/3.cc: Ditto.
	* testsuite/22_locale/time_put/put/wchar_t/4.cc: Ditto.
	* testsuite/22_locale/time_put/put/wchar_t/5.cc: Ditto.
	* testsuite/22_locale/time_put/put/wchar_t/6.cc: Ditto.
	* testsuite/22_locale/time_put/put/wchar_t/7.cc: Ditto.
	* testsuite/22_locale/time_put/put/wchar_t/8.cc: Ditto.

	* testsuite/22_locale/time_put/put/char/9780-1.cc: Fix typos.

From-SVN: r80493

From-SVN: r80492

	* fixinc/inclhack.def (rpc_xdr_lvalue_cast_a,
	rpc_xdr_lvalue_cast_b): New fixes.
	* fixinc/fixincl.x: Regenerate.
	* fixinc/tests/base/rpc/xdr.h: Add new tests.

From-SVN: r80490

        * config/rs6000/rs6000.c (processor_target_table): Add MASK_MFCRF
        to power4 and power5 entries.

From-SVN: r80486

2004-04-06  Geoffrey Keating  <geoffk@apple.com>

	* c-common.h (pending_lang_change): Mark for PCH.

Index: testsuite/ChangeLog
2004-04-06  Geoffrey Keating  <geoffk@apple.com>

	* g++.dg/pch/externc-1.Hs: New.
	* g++.dg/pch/externc-1.C: New.

From-SVN: r80484

2004-04-07  Caroline Tice  <ctice@apple.com>

        * gcc.c (main): Move 'break' in main loops (on an error)
        to wait until error processing has occurred.

From-SVN: r80483

	* gcc_release (build_sources): Do not use "-r" and "-D" at the
	same time with "cvs export".

From-SVN: r80480

	* config/locale/gnu/monetary_members.cc
	(moneypunct<wchar_t>::_M_initialize_moneypunct): Prefer
	_NL_MONETARY_DECIMAL_POINT_WC, _NL_MONETARY_THOUSANDS_SEP_WC,
	and __MON_GROUPING to _NL_NUMERIC_DECIMAL_POINT_WC,
	_NL_NUMERIC_THOUSANDS_SEP_WC, and GROUPING.
	* config/locale/gnu/numeric_members.cc
	(numpunct<char>::_M_initialize_numpunct): Prefer DECIMAL_POINT
	and THOUSANDS_SEP to the deprecated RADIXCHAR and THOUSEP.

From-SVN: r80477

2004-04-06  Benjamin Kosnik  <bkoz@redhat.com>

	Fixups for EDG front end.
	* include/ext/rope: Instead of non-existent function
	_Data_allocate, use allocator's allocate. Use this.
	(namespace _Rope_constants): Move _S_max_rope_depth, and _Tag
	enumerations from _Rope_RopeRep here.
	* include/ext/ropeimpl.h: Same.
	* src/ext-inst.cc (_S_min_len): Fix up definition.

	* config/locale/gnu/ctype_members.cc: Qualify base class members
	with this.
	* config/locale/generic/ctype_members.cc: Same.
	* config/locale/gnu/messages_members.h: Same.
	* config/locale/generic/messages_members.h: Same.
	* src/ctype.cc: Same.
	* include/bits/codecvt.h: Same.

	* include/bits/boost_concept_check.h: Declare.
	(__error_type_must_be_an_unsigned_integer_type): Remove this.
	(__error_type_must_be_an_integer_type): Remove this.
	(__error_type_must_be_a_signed_integer_type): Remove this.

	* config/io/basic_file_stdio.cc (__basic_file::sys_open): Remove cast.

	* libsupc++/eh_alloc.cc (__cxa_free_exception): Add exception
	specification to definition.
	(__cxa_allocate_exception): Same.
	* libsupc++/eh_catch.cc (__cxa_begin_catch): Same.
	* libsupc++/eh_globals.cc (__cxa_get_globals_fast): Same.
	(__cxa_get_globals): Same.

	* libsupc++/del_op.cc: Add comment about freestanding.

From-SVN: r80475

re PR bootstrap/14760 (A bug in configure{,.in} prevents using both --program-suffix and --program-prefix)

	PR bootstrap/14760
	* configure.in: When computing baseargs, strip *all* copies of
	offending options.  Also, don't match/substitute the trailing space,
	so that this actually works when two similar options are separated by
	only one space.
	* configure: Regenerate.

From-SVN: r80474

	* config.gcc: Stop changing enable_threads midstream.
	Replace uses of enable_threads_flag with enable_threads.
	* configure.ac: Replace uses of enable_threads_flag with
	enable_threads.  Improve autoconf quotation in one place.
	* configure: Regenerate.

From-SVN: r80473

	* gcc.dg/compat/struct-by-value-5a_main.c,
	gcc.dg/compat/struct-by-value-5b_main.c: New files.
	* gcc.dg/compat/struct-by-value-5_main.c: Delete.
	* gcc.dg/compat/struct-by-value-5a_x.c,
	gcc.dg/compat/struct-by-value-5b_x.c: New, split out from
	gcc.dg/compat/struct-by-value-5_x.c.
	* gcc.dg/compat/struct-by-value-5a_y.c,
	gcc.dg/compat/struct-by-value-5b_y.c: New, split out from
	gcc.dg/compat/struct-by-value-5_y.c.

	* gcc.dg/compat/struct-by-value-6a_main.c,
	gcc.dg/compat/struct-by-value-6b_main.c: New files.
	* gcc.dg/compat/struct-by-value-6_main.c: Delete.
	* gcc.dg/compat/struct-by-value-6a_x.c,
	gcc.dg/compat/struct-by-value-6b_x.c: New, split out from
	gcc.dg/compat/struct-by-value-6_x.c.
	* gcc.dg/compat/struct-by-value-6a_y.c,
	gcc.dg/compat/struct-by-value-6b_y.c: New, split out from
	gcc.dg/compat/struct-by-value-6_y.c.

	* gcc.dg/compat/struct-by-value-7a_main.c,
	gcc.dg/compat/struct-by-value-7b_main.c: New files.
	* gcc.dg/compat/struct-by-value-7_main.c: Delete.
	* gcc.dg/compat/struct-by-value-7a_x.c,
	gcc.dg/compat/struct-by-value-7b_x.c: New, split out from
	gcc.dg/compat/struct-by-value-7_x.c.
	* gcc.dg/compat/struct-by-value-7a_y.c,
	gcc.dg/compat/struct-by-value-7b_y.c: New, split out from
	gcc.dg/compat/struct-by-value-7_y.c.

From-SVN: r80472

From-SVN: r80469

	* gcc.dg/i386-sse-8.c: Don't use -march=pentium3 on x86_64.
	* gcc.dg/i386-local.c: Expect %edi, not %eax register on x86_64.
	* gcc.dg/20020103-1.c: Add -fno-asynchronous-unwind-tables to
	options.

From-SVN: r80464

2004-04-06  Uros Bizjak  <uros@kss-loka.si>

	* builtins.c: Implement support for sincos function.
	(expand_builtin_mathfn): Remove BUILT_IN_SIN{,F,L} and
	BUILT_IN_COS{,F,L}.
	(expand_builtin_mathfn_3): New function.
	(expand_builtin): Expand BUILT_IN_SIN{,F,L} and
	BUILT_IN_COS{,F,L} using expand_builtin_mathfn_3 if
	flag_unsafe_math_optimization is set.

	* optabs.h (enum optab_index): Add new OTI_sincos.
	(sincos_optab): Define corresponding macro.

	* optabs.c (init_optabs): Initialize sincos_optab.
	(expand_twoval_unop): New function.

	* genopinit.c (optabs): Implement sincos_optab using sincos?f3
	patterns.

	* reg-stack.c (subst_stack_regs_pat): Handle UNSPEC_SINCOS_COS
	and UNSPEC_SINCOS_SIN.

	* config/i386/i386.md (sincosdf3, sincossf3, *sincosextendsfdf3,
	sincosxf3): New patterns to implement sincos, sincosf and sincosl
	built-ins as inline x87 intrinsics. Define splits for
	sindf2, sinsf2, *sinextendsfdf2, sinxf2, cosdf2,
	cossf2, *cosextendsfdf2 and cosxf2 patterns from corresponding
	sincos patterns.
	(sindf2, sinsf2, sinxf2): Rename to *sindf2, *sinsf2, *sinxf2.
	(cosdf2, cossf2, cosxf2): Rename to *cosdf2, *cossf2, *cosxf2.

	(UNSPEC_SINCOS_SIN, UNPEC_SINCOS_COS): New unspecs to represent
	x87's unspec insn.

	* gcc.dg/builtins-36.c: New test.

From-SVN: r80463

     PR 14467
     * config/darwin.h (LINK_COMMAND_SPEC): Use c++filt instead of c++filt3.

From-SVN: r80461

2004-04-06  H.J. Lu  <hongjiu.lu@intel.com>

	* include/private/gcconfig.h (PREFETCH): Use __builtin_prefetch
	for gcc >= 3.0.
	(PREFETCH_FOR_WRITE): Likewise.

From-SVN: r80459

        * configure.in (powerpc-*-aix*): Remove target-libada from noconfigdirs.
        (rs6000-*-aix*): Same.
        * configure: Regenerate.

From-SVN: r80458

From-SVN: r80457

From-SVN: r80455

From-SVN: r80454

2004-04-06  Pascal Obry  <obry@gnat.com>

	* adaint.c (DIR_SEPARATOR): Properly set DIR_SEPARATOR on Win32.

	* osint.adb (Program_Name): Do not look past a directory separator.

2004-04-06  Thomas Quinot  <quinot@act-europe.fr>

	* atree.adb: Update comment (Rewrite_Substitute_Node no longer exists).

	* exp_ch6.adb (Rewrite_Function_Call): Clarify documentation of
	requirement for preserving a copy of the original assignment node.

	* sinfo.ads: Update comment (Original_Tree -> Original_Node).

2004-04-06  Olivier Hainque  <hainque@act-europe.fr>

	(__gnat_initialize [Vxworks]): Enable references to the crtstuff bits
	when supported.

2004-04-06  Ed Schonberg  <schonberg@gnat.com>

	* sem_ch4.adb (Remove_Abstract_Operations): Extend previous changes to
	operator calls in functional notation, and apply
	Universal_Interpretation to operands, not to their type.

2004-04-06  Robert Dewar  <dewar@gnat.com>

	* 5wdirval.adb: Minor reformatting

2004-04-06  Ed Falis  <falis@gnat.com>

	* gnat_rm.texi: Improve a reference to the GCC manual

From-SVN: r80453

sh.c (prepare_move_operands): Use emit_call_insn when the TLS address is generated by a function call.

	* config/sh/sh.c (prepare_move_operands): Use emit_call_insn
	when the TLS address is generated by a function call.
	* config/sh/sh.md (tls_global_dynamic): Use a call expression.
	(tls_local_dynamic): Likewise.

From-SVN: r80450

From-SVN: r80444

	PR2123
	* g++.gd/expr/anew1.C: XFAIL and make reproducible.  Call abort on
	failure and exit(0) on success.
	* g++.gd/expr/anew2.C: Ditto.
	* g++.gd/expr/anew3.C: Ditto.
	* g++.gd/expr/anew4.C: Ditto.

From-SVN: r80440

mt_allocator.h (__mt_alloc<>::deallocate): The critical section is actually very small, only two assignments.

2004-04-05  Paolo Carlini  <pcarlini@suse.de>

	* include/ext/mt_allocator.h (__mt_alloc<>::deallocate):
	The critical section is actually very small, only two assignments.

From-SVN: r80439

2004-04-05  Andrew Pinski  <pinskia@physics.uc.edu>

        * tree.c (reconstruct_complex_type): Use TYPE_READONLY
        and TYPE_VOLATILE.

From-SVN: r80438

From-SVN: r80436

2004-04-05  Caroline Tice  <ctice@apple.com>

        * gcc.c (combine_flag): New global variable, for new driver option.
        (struct compiler): Add two new fields, to be used when
        combining multiple input files in a single pass (IMA).
        (default_compilers):  Add values for the new fields to all
        compiler entries. Modify the "@c" compiler entry for doing IMA
        properly with "-save-temps" and the "combine" flag.
        (option_map):  Add new driver option, "--combine", to tell driver
        to pass multiple input files to compiler at one time.
        (have_o_argbuf_index): New global variable.
        (store_arg): Modify to assign value to have_o_argbuf_index.
        (struct infile):  Add three new fields, to help with IMA.
        (display_help): Add help for new "combine" option.
        (process_command): Remove local variable have_o; add code to check
        for new "combine" option; remove assignment to combine_inputs.
        (do_spec_1):  Modify to deal with IMA better.
        (main): Make variable 'lang_n_infiles' local to entire function
        rather than to a single block.  Use flag combine_flag to
        determine whether to do IMA or not; Modify loop initializing
        infiles to deal properly with linker files.
        Add code for doing preprocessing in presence of
        IMA with "-save-temps" flag.  Modify "main" loop to handle
        multiple input files, in multiple languages, with or without
        preprocessing,  gracefully.
        * toplev.c (set_src_pwd): Modify to not complain if attempting to
        re-set it to same directory it's previously been set to (avoid
        irritating, meaningless warning messages when doing IMA with
        save-temps).
        * doc/invoke.texi: Add "-combine" to list of Overall Options;
        remove documentation about IMA that is no longer accurate; Add
        documentation explaining what "-combine" does.
        * ada/lang-specs.h: Add initialization values for new fields in
        "struct compiler".
        * cp/lang-specs.h: Likewise.
        * f/lang-specs.h: Likewise.
        * java/lang-specs.h: Likewise.
        * objc/lang-specs.h: Likewise.
        * treelang/lang-specs.h: Likewise.

Fix gcc driver to work properly with IMI.

From-SVN: r80435

	* config/rs6000/rs6000.c (VTABLE_NAME_P): Add _ZTI to special
	symbol handling.

Co-Authored-By: John David Anglin <dave.anglin@nrc-cnrc.gc.ca>

From-SVN: r80434

	PR optimization/13424 (hppa), bootstrap/14462, c/14828
	* pa.md: Use replace_equiv_address to retain the attributes of the
	memory operands used in the split and peephole2 patterns for optimizing
	the pre-reload movstrsi, movstrdi, clrstrsi and clrstrdi patterns.

Co-Authored-By: John David Anglin <dave.anglin@nrc-cnrc.gc.ca>

From-SVN: r80433

cp:
	PR c++/3518
	* pt.c (check_cv_quals_for_unify): Ignore bogus CV quals at outer
	level.
testsuite:
	PR c++/3518
	* g++.dg/template/unify7.C: New.

From-SVN: r80432

2004-04-05  Vincent Celier  <celier@gnat.com>

	* adaint.h, adaint.c: Add function __gnat_named_file_length

	* impunit.adb: Add Ada.Directories to the list

	* Makefile.in: Add VMS and Windows versions of
	Ada.Directories.Validity package body.

	* Makefile.rtl: Add a-direct and a-dirval

	* mlib-tgt.ads: Minor comment update.

	* a-dirval.ads, a-dirval.adb, 5vdirval.adb, 5wdirval.adb,
	a-direct.ads, a-direct.adb: New files.

2004-04-05  Vincent Celier  <celier@gnat.com>

	PR ada/13620
	* make.adb (Scan_Make_Arg): Pass any -fxxx switches to gnatlink, not
	just to the compiler.

2004-04-05  Robert Dewar  <dewar@gnat.com>

	* a-except.adb (Exception_Name_Simple): Make sure lower bound of
	returned string is 1.

	* ali-util.adb: Use proper specific form for Warnings (Off, entity)

	* eval_fat.ads: Minor reformatting

	* g-curexc.ads: Document that lower bound of returned string values
	is always one.

	* gnatlink.adb: Add ??? comment for previous change
	(need to document why this is VMS specific)

	* s-stoele.ads: Minor reformatting

	* tbuild.ads: Minor reformatting throughout (new function specs)

	* par-ch10.adb (P_Context_Clause): Handle comma instead of semicolon
	after WITH.

	* scng.adb: Minor reformatting

2004-04-05  Geert Bosch  <bosch@gnat.com>

	* eval_fat.adb (Machine): Remove unnecessary suppression of warning.
	(Leading_Part): Still perform truncation to machine number if the
	specified radix_digits is greater or equal to machine_mantissa.

2004-04-05  Javier Miranda  <miranda@gnat.com>

	* par-ch3.adb: Complete documentation of previous change
	Correct wrong syntax documentation of the OBJECT_DECLARATION rule
	(aliased must appear before constant).

	* par-ch4.adb: Complete documentation of previous change.

	* par-ch6.adb: Complete documentation of previous change.

	* sinfo.ads: Fix typo in commment.

2004-04-05  Ed Schonberg  <schonberg@gnat.com>

	* sem_ch3.adb (Inherit_Components): If derived type is private and has
	stored discriminants, use its discriminants to constrain parent type,
	as is done for non-private derived record types.

	* sem_ch4.adb (Remove_Abstract_Operations): New subprogram to implement
	Ada 2005 AI-310: an abstract non-dispatching operation is not a
	candidate interpretation in an overloaded call.

	* tbuild.adb (Unchecked_Convert_To): Preserve conversion node if
	expression is Null and target type is not an access type (e.g. a
	non-private address type).

2004-04-05  Thomas Quinot  <quinot@act-europe.fr>

	* exp_ch6.adb (Rewrite_Function_Call): When rewriting an assignment
	statement whose right-hand side is an inlined call, save a copy of the
	original assignment subtree to preserve enough consistency for
	Analyze_Assignment to proceed.

	* sem_ch5.adb (Analyze_Assignment): Remove a costly copy of the
	complete assignment subtree which is now unnecessary, as the expansion
	of inlined call has been improved to preserve a consistent assignment
	tree.  Note_Possible_Modification must be called only
	after checks have been applied, or else unnecessary checks will
	be generated.

	* sem_util.adb (Note_Possible_Modification): Reorganise the handling
	of explicit dereferences that do not Come_From_Source:
	 - be selective on cases where we must go back to the dereferenced
	   pointer (an assignment to an implicit dereference must not be
	   recorded as modifying the pointer);
	 - do not rely on Original_Node being present (Analyze_Assignment
	   calls Note_Possible_Modification on a copied tree).

	* sem_warn.adb (Check_References): When an unset reference to a pointer
	that is never assigned is encountered, prefer '<pointer> may be null'
	warning over '<pointer> is never assigned a value'.

2004-04-05  Ramon Fernandez  <fernandez@gnat.com>

	* tracebak.c: Change STOP_FRAME in ppc vxworks to be compliant with
	the ABI.

2004-04-05  Olivier Hainque  <hainque@act-europe.fr>

	* 5gmastop.adb (Pop_Frame): Comment out the pragma Linker_Option for
	libexc. We currently don't reference anything in this library and
	linking it in triggers linker warnings we don't want to see.

	* init.c: Update comments.

From-SVN: r80431

	* c-decl.c (build_compound_literal): Use TYPE_READONLY.
	* emit-rtl.c (set_mem_attributes_minus_bitpos): Likewise.
	* objc/objc-act.c (adorn_decl, gen_declspecs): Likewise.
	* c-typeck.c (decl_constant_value): Don't access DECL_INITIAL of a
	PARM_DECL.
	* calls.c (flags_from_decl_or_type): Use TYPE_READONLY and do so only
	for a type.
	* print-tree.c (print_node): Properly handle side-effects, readonly,
	and constant flags.
	* tree.c (build1_stat, build_expr_wfl): Only look at TREE_SIDE_EFFECTS
	and TREE_CONSTANT if not a type.
	* tree.h (IS_NON_TYPE_CODE_CLASS): New macro.
	(IS_EXPR_CODE_CLASS): Write 'E', not 'e'.
	(NON_TYPE_CHECK): New macro.
	(TREE_SIDE_EFFECT, TREE_READONLY, TREE_CONSTANT: Add check.

	* cp/init.c (decl_constant_value): Don't look at DECL_INITIAL
	of PARM_DECL.
	* cp/tree.c (bot_manip, build_min): Don't look at TREE_CONSTANT
	or TREE_SIDE_EFFECTS of a type.

	* ada/decl.c (gnat_to_gnu_entity): Use TYPE_READONLY.
	* ada/utils.c (create_field_decl): Likewise.
	* ada/utils2.c (build_unary_op, gnat_build_constructor): Likewise.

From-SVN: r80430

	* config/sparc/sol2-bi.h (PREFERRED_DEBUGGING_TYPE): Set
	to DWARF2_DEBUG unconditionally.
	(ASM_DEBUG_SPEC): Set the default to --gdwarf2 unconditionally.

From-SVN: r80425

	PR target/14548
	* config.host: Set the shell variable host_can_use_collect2.
	Set it to yes by default, and to no for alpha*-dec-*vms*,
	i[34567]86-*-mingw32*, and powerpc-*-beos*.
	* configure.ac: Set and substitute the shell variable collect2.
	Give an error if use_collect2 is yes and host_can_use_collect2 is
	no.
	* Makefile.in (COLLECT2): Rename from USE_COLLECT2.  Change all
	uses.  Initialize to @collect2@.
	(STAGESTUFF): Remove $(USE_COLLECT2).
	* config/alpha/x-vms (USE_COLLECT2): Don't set.
	* config/i386/t-mingw32 (USE_COLLECT2): Likewise.
	* config/rs6000/t-beos (USE_COLLECT2): Likewise.
	* config/pa/t-pa64: Remove commented out USE_COLLECT2.
	* configure: Regenerate.

Co-Authored-By: Nathanael Nerode <neroden@gcc.gnu.org>

From-SVN: r80422

simplify-rtx.c (simplify_binary_operation): Constant fold DIV, MOD, UDIV and UMOD using div_and_round_double.


	* simplify-rtx.c (simplify_binary_operation): Constant fold
	DIV, MOD, UDIV and UMOD using div_and_round_double.

From-SVN: r80420