3psoccon.ads, [...]: Files added.

2003-10-21  Arnaud Charlet  <charlet@act-europe.fr>

	* 3psoccon.ads, 3veacodu.adb, 3vexpect.adb, 3vsoccon.ads,
	3vsocthi.adb, 3vsocthi.ads, 3vtrasym.adb, 3zsoccon.ads,
	3zsocthi.adb, 3zsocthi.ads, 50system.ads, 51system.ads,
	55system.ads, 56osinte.adb, 56osinte.ads, 56taprop.adb,
	56taspri.ads, 56tpopsp.adb, 57system.ads, 58system.ads,
	59system.ads, 5aml-tgt.adb, 5bml-tgt.adb, 5csystem.ads,
	5dsystem.ads, 5fosinte.adb, 5gml-tgt.adb, 5hml-tgt.adb,
	5isystem.ads, 5lparame.adb, 5msystem.ads, 5psystem.ads,
	5sml-tgt.adb, 5sosprim.adb, 5stpopsp.adb, 5tsystem.ads,
	5usystem.ads, 5vml-tgt.adb, 5vsymbol.adb, 5vtraent.adb,
	5vtraent.ads, 5wml-tgt.adb, 5xparame.ads, 5xsystem.ads,
	5xvxwork.ads, 5yparame.ads, 5ytiitho.adb, 5zinit.adb,
	5zml-tgt.adb, 5zparame.ads, 5ztaspri.ads, 5ztfsetr.adb,
	5zthrini.adb, 5ztiitho.adb, 5ztpopsp.adb, 7stfsetr.adb,
	7straces.adb, 7strafor.adb, 7strafor.ads, 7stratas.adb,
	a-excach.adb, a-exexda.adb, a-exexpr.adb, a-exextr.adb,
	a-exstat.adb, a-strsup.adb, a-strsup.ads, a-stwisu.adb,
	a-stwisu.ads, bld.adb, bld.ads, bld-io.adb,
	bld-io.ads, clean.adb, clean.ads, ctrl_c.c,
	erroutc.adb, erroutc.ads, errutil.adb, errutil.ads,
	err_vars.ads, final.c, g-arrspl.adb, g-arrspl.ads,
	g-boubuf.adb, g-boubuf.ads, g-boumai.ads, g-bubsor.adb,
	g-bubsor.ads, g-comver.adb, g-comver.ads, g-ctrl_c.ads,
	g-dynhta.adb, g-dynhta.ads, g-eacodu.adb, g-excact.adb,
	g-excact.ads, g-heasor.adb, g-heasor.ads, g-memdum.adb,
	g-memdum.ads, gnatclean.adb, gnatsym.adb, g-pehage.adb,
	g-pehage.ads, g-perhas.ads, gpr2make.adb, gpr2make.ads,
	gprcmd.adb, gprep.adb, gprep.ads, g-semaph.adb,
	g-semaph.ads, g-string.adb, g-string.ads, g-strspl.ads,
	g-wistsp.ads, i-vthrea.adb, i-vthrea.ads, i-vxwoio.adb,
	i-vxwoio.ads, Makefile.generic, Makefile.prolog, Makefile.rtl,
	prep.adb, prep.ads, prepcomp.adb, prepcomp.ads,
	prj-err.adb, prj-err.ads, s-boarop.ads, s-carsi8.adb,
	s-carsi8.ads, s-carun8.adb, s-carun8.ads, s-casi16.adb,
	s-casi16.ads, s-casi32.adb, s-casi32.ads, s-casi64.adb,
	s-casi64.ads, s-casuti.adb, s-casuti.ads, s-caun16.adb,
	s-caun16.ads, s-caun32.adb, s-caun32.ads, s-caun64.adb,
	s-caun64.ads, scng.adb, scng.ads, s-exnint.adb,
	s-exnllf.adb, s-exnlli.adb, s-expint.adb, s-explli.adb,
	s-geveop.adb, s-geveop.ads, s-hibaen.ads, s-htable.adb,
	s-htable.ads, sinput-c.adb, sinput-c.ads, s-memcop.ads,
	socket.c, s-purexc.ads, s-scaval.adb, s-stopoo.adb,
	s-strcom.adb, s-strcom.ads, s-strxdr.adb, s-rident.ads,
	s-thread.adb, s-thread.ads, s-tpae65.adb, s-tpae65.ads,
	s-tporft.adb, s-traent.adb, s-traent.ads, styleg.adb,
	styleg.ads, styleg-c.adb, styleg-c.ads, s-veboop.adb,
	s-veboop.ads, s-vector.ads, symbols.adb, symbols.ads,
	tb-alvms.c, tb-alvxw.c, tempdir.adb, tempdir.ads,
	vms_conv.ads, vms_conv.adb, vms_data.ads,
	vxaddr2line.adb: Files added. Merge with ACT tree.

	* 4dintnam.ads, 4mintnam.ads, 4uintnam.ads, 52system.ads,
	5dosinte.ads, 5etpopse.adb, 5mosinte.ads, 5qosinte.adb,
	5qosinte.ads, 5qstache.adb, 5qtaprop.adb, 5qtaspri.ads,
	5stpopse.adb, 5uintman.adb, 5uosinte.ads, adafinal.c,
	g-enblsp.adb, io-aux.c, scn-nlit.adb, scn-slit.adb,
	s-exnflt.ads, s-exngen.adb, s-exngen.ads, s-exnlfl.ads,
	s-exnlin.ads, s-exnsfl.ads, s-exnsin.ads, s-exnssi.ads,
	s-expflt.ads, s-expgen.adb, s-expgen.ads, s-explfl.ads,
	s-explin.ads, s-expllf.ads, s-expsfl.ads, s-expsin.ads,
	s-expssi.ads, style.adb: Files removed. Merge with ACT tree.

	* 1ic.ads, 31soccon.ads, 31soliop.ads, 3asoccon.ads,
	3bsoccon.ads, 3gsoccon.ads, 3hsoccon.ads, 3ssoccon.ads,
	3ssoliop.ads, 3wsoccon.ads, 3wsocthi.adb, 3wsocthi.ads,
	3wsoliop.ads, 41intnam.ads, 42intnam.ads, 4aintnam.ads,
	4cintnam.ads, 4gintnam.ads, 4hexcpol.adb, 4hintnam.ads,
	4lintnam.ads, 4nintnam.ads, 4ointnam.ads, 4onumaux.ads,
	4pintnam.ads, 4sintnam.ads, 4vcaldel.adb, 4vcalend.adb,
	4vintnam.ads, 4wexcpol.adb, 4wintnam.ads, 4zintnam.ads,
	51osinte.adb, 51osinte.ads, 52osinte.adb, 52osinte.ads,
	53osinte.ads, 54osinte.ads, 5aosinte.adb, 5aosinte.ads,
	5asystem.ads, 5ataprop.adb, 5atasinf.ads, 5ataspri.ads,
	5atpopsp.adb, 5avxwork.ads, 5bosinte.adb, 5bosinte.ads,
	5bsystem.ads, 5cosinte.ads, 5esystem.ads, 5fintman.adb,
	5fosinte.ads, 5fsystem.ads, 5ftaprop.adb, 5ftasinf.ads,
	5ginterr.adb, 5gintman.adb, 5gmastop.adb, 5gosinte.ads,
	5gproinf.ads, 5gsystem.ads, 5gtaprop.adb, 5gtasinf.ads,
	5gtpgetc.adb, 5hosinte.adb, 5hosinte.ads, 5hsystem.ads,
	5htaprop.adb, 5htaspri.ads, 5htraceb.adb, 5iosinte.adb,
	5itaprop.adb, 5itaspri.ads, 5ksystem.ads, 5kvxwork.ads,
	5lintman.adb, 5lml-tgt.adb, 5losinte.ads, 5lsystem.ads,
	5mvxwork.ads, 5ninmaop.adb, 5nintman.adb, 5nosinte.ads,
	5ntaprop.adb, 5ntaspri.ads, 5ointerr.adb, 5omastop.adb,
	5oosinte.adb, 5oosinte.ads, 5oosprim.adb, 5oparame.adb,
	5osystem.ads, 5otaprop.adb, 5otaspri.ads, 5posinte.ads,
	5posprim.adb, 5pvxwork.ads, 5sintman.adb, 5sosinte.adb,
	5sosinte.ads, 5ssystem.ads, 5staprop.adb, 5stasinf.ads,
	5staspri.ads, 5svxwork.ads, 5tosinte.ads, 5vasthan.adb,
	5vinmaop.adb, 5vinterr.adb, 5vintman.adb, 5vintman.ads,
	5vmastop.adb, 5vosinte.adb, 5vosinte.ads, 5vosprim.adb,
	5vsystem.ads, 5vtaprop.adb, 5vtaspri.ads, 5vtpopde.adb,
	5vtpopde.ads, 5wgloloc.adb, 5wintman.adb, 5wmemory.adb,
	5wosprim.adb, 5wsystem.ads, 5wtaprop.adb, 5wtaspri.ads,
	5ysystem.ads, 5zinterr.adb, 5zintman.adb, 5zosinte.adb,
	5zosinte.ads, 5zosprim.adb, 5zsystem.ads, 5ztaprop.adb,
	6vcpp.adb, 6vcstrea.adb, 6vinterf.ads, 7sinmaop.adb,
	7sintman.adb, 7sosinte.adb, 7sosprim.adb, 7staprop.adb,
	7staspri.ads, 7stpopsp.adb, 7straceb.adb, 9drpc.adb,
	a-caldel.adb, a-caldel.ads, a-charac.ads, a-colien.ads,
	a-comlin.adb, adaint.c, adaint.h, ada-tree.def,
	a-diocst.adb, a-diocst.ads, a-direio.adb, a-except.adb,
	a-except.ads, a-excpol.adb, a-exctra.adb, a-exctra.ads,
	a-filico.adb, a-interr.adb, a-intsig.adb, a-intsig.ads,
	ali.adb, ali.ads, ali-util.adb, ali-util.ads,
	a-ngcefu.adb, a-ngcoty.adb, a-ngelfu.adb, a-nudira.adb,
	a-nudira.ads, a-nuflra.adb, a-nuflra.ads, a-reatim.adb,
	a-reatim.ads, a-retide.ads, a-sequio.adb, a-siocst.adb,
	a-siocst.ads, a-ssicst.adb, a-ssicst.ads, a-strbou.adb,
	a-strbou.ads, a-strfix.adb, a-strmap.adb, a-strsea.ads,
	a-strunb.adb, a-strunb.ads, a-ststio.adb, a-stunau.adb,
	a-stunau.ads, a-stwibo.adb, a-stwibo.ads, a-stwifi.adb,
	a-stwima.adb, a-stwiun.adb, a-stwiun.ads, a-tags.adb,
	a-tags.ads, a-tasatt.adb, a-taside.adb, a-teioed.adb,
	a-textio.adb, a-textio.ads, a-tienau.adb, a-tifiio.adb,
	a-tiflau.adb, a-tiflio.adb, a-tigeau.adb, a-tigeau.ads,
	a-tiinau.adb, a-timoau.adb, a-tiocst.adb, a-tiocst.ads,
	atree.adb, atree.ads, a-witeio.adb, a-witeio.ads,
	a-wtcstr.adb, a-wtcstr.ads, a-wtdeio.adb, a-wtedit.adb,
	a-wtenau.adb, a-wtflau.adb, a-wtinau.adb, a-wtmoau.adb,
	bcheck.adb, binde.adb, bindgen.adb, bindusg.adb,
	checks.adb, checks.ads, cio.c, comperr.adb,
	comperr.ads, csets.adb, cstand.adb, cstreams.c,
	debug_a.adb, debug_a.ads, debug.adb, decl.c,
	einfo.adb, einfo.ads, errout.adb, errout.ads,
	eval_fat.adb, eval_fat.ads, exp_aggr.adb, expander.adb,
	expander.ads, exp_attr.adb, exp_ch11.adb, exp_ch13.adb,
	exp_ch2.adb, exp_ch3.adb, exp_ch3.ads, exp_ch4.adb,
	exp_ch5.adb, exp_ch6.adb, exp_ch7.adb, exp_ch7.ads,
	exp_ch8.adb, exp_ch9.adb, exp_code.adb, exp_dbug.adb,
	exp_dbug.ads, exp_disp.adb, exp_dist.adb, expect.c,
	exp_fixd.adb, exp_imgv.adb, exp_intr.adb, exp_pakd.adb,
	exp_prag.adb, exp_strm.adb, exp_strm.ads, exp_tss.adb,
	exp_tss.ads, exp_util.adb, exp_util.ads, exp_vfpt.adb,
	fe.h, fmap.adb, fmap.ads, fname.adb,
	fname.ads, fname-uf.adb, fname-uf.ads, freeze.adb,
	freeze.ads, frontend.adb, g-awk.adb, g-awk.ads,
	g-busora.adb, g-busora.ads, g-busorg.adb, g-busorg.ads,
	g-casuti.adb, g-casuti.ads, g-catiio.adb, g-catiio.ads,
	g-cgi.adb, g-cgi.ads, g-cgicoo.adb, g-cgicoo.ads,
	g-cgideb.adb, g-cgideb.ads, g-comlin.adb, g-comlin.ads,
	g-crc32.adb, g-crc32.ads, g-debpoo.adb, g-debpoo.ads,
	g-debuti.adb, g-debuti.ads, g-diopit.adb, g-diopit.ads,
	g-dirope.adb, g-dirope.ads, g-dyntab.adb, g-dyntab.ads,
	g-except.ads, g-exctra.adb, g-exctra.ads, g-expect.adb,
	g-expect.ads, g-hesora.adb, g-hesora.ads, g-hesorg.adb,
	g-hesorg.ads, g-htable.adb, g-htable.ads, gigi.h,
	g-io.adb, g-io.ads, g-io_aux.adb, g-io_aux.ads,
	g-locfil.adb, g-locfil.ads, g-md5.adb, g-md5.ads,
	gmem.c, gnat1drv.adb, gnatbind.adb, gnatchop.adb,
	gnatcmd.adb, gnatfind.adb, gnatkr.adb, gnatlbr.adb,
	gnatlink.adb, gnatls.adb, gnatmake.adb, gnatmem.adb,
	gnatname.adb, gnatprep.adb, gnatprep.ads, gnatpsta.adb,
	gnatxref.adb, g-os_lib.adb, g-os_lib.ads, g-regexp.adb,
	g-regexp.ads, g-regist.adb, g-regist.ads, g-regpat.adb,
	g-regpat.ads, g-soccon.ads, g-socket.adb, g-socket.ads,
	g-socthi.adb, g-socthi.ads, g-soliop.ads, g-souinf.ads,
	g-speche.adb, g-speche.ads, g-spipat.adb, g-spipat.ads,
	g-spitbo.adb, g-spitbo.ads, g-sptabo.ads, g-sptain.ads,
	g-sptavs.ads, g-table.adb, g-table.ads, g-tasloc.adb,
	g-tasloc.ads, g-thread.adb, g-thread.ads, g-traceb.adb,
	g-traceb.ads, g-trasym.adb, g-trasym.ads, hostparm.ads,
	i-c.ads, i-cobol.adb, i-cpp.adb, i-cstrea.ads,
	i-cstrin.adb, i-cstrin.ads, impunit.adb, init.c,
	inline.adb, interfac.ads, i-pacdec.ads, itypes.adb,
	itypes.ads, i-vxwork.ads, lang.opt, lang-specs.h,
	layout.adb, lib.adb, lib.ads, lib-list.adb,
	lib-load.adb, lib-load.ads, lib-sort.adb, lib-util.adb,
	lib-writ.adb, lib-writ.ads, lib-xref.adb, lib-xref.ads,
	link.c, live.adb, make.adb, make.ads,
	Makefile.adalib, Makefile.in, Make-lang.in, makeusg.adb,
	mdll.adb, mdll-fil.adb, mdll-fil.ads, mdll-utl.adb,
	mdll-utl.ads, memroot.adb, memroot.ads, memtrack.adb,
	misc.c, mkdir.c, mlib.adb, mlib.ads,
	mlib-fil.adb, mlib-fil.ads, mlib-prj.adb, mlib-prj.ads,
	mlib-tgt.adb, mlib-tgt.ads, mlib-utl.adb, mlib-utl.ads,
	namet.adb, namet.ads, namet.h, nlists.ads,
	nlists.h, nmake.adt, opt.adb, opt.ads,
	osint.adb, osint.ads, osint-b.adb, osint-c.adb,
	par.adb, par-ch10.adb, par-ch11.adb, par-ch2.adb,
	par-ch3.adb, par-ch4.adb, par-ch5.adb, par-ch6.adb,
	par-ch9.adb, par-endh.adb, par-labl.adb, par-load.adb,
	par-prag.adb, par-sync.adb, par-tchk.adb, par-util.adb,
	prj.adb, prj.ads, prj-attr.adb, prj-attr.ads,
	prj-com.adb, prj-com.ads, prj-dect.adb, prj-dect.ads,
	prj-env.adb, prj-env.ads, prj-ext.adb, prj-ext.ads,
	prj-makr.adb, prj-makr.ads, prj-nmsc.adb, prj-nmsc.ads,
	prj-pars.adb, prj-pars.ads, prj-part.adb, prj-part.ads,
	prj-pp.adb, prj-pp.ads, prj-proc.adb, prj-proc.ads,
	prj-strt.adb, prj-strt.ads, prj-tree.adb, prj-tree.ads,
	prj-util.adb, prj-util.ads, raise.c, raise.h,
	repinfo.adb, repinfo.h, restrict.adb, restrict.ads,
	rident.ads, rtsfind.adb, rtsfind.ads, s-addima.ads,
	s-arit64.adb, s-assert.adb, s-assert.ads, s-atacco.adb,
	s-atacco.ads, s-auxdec.adb, s-auxdec.ads, s-bitops.adb,
	scans.ads, scn.adb, scn.ads, s-crc32.adb,
	s-crc32.ads, s-direio.adb, sem.adb, sem.ads,
	sem_aggr.adb, sem_attr.adb, sem_attr.ads, sem_case.adb,
	sem_case.ads, sem_cat.adb, sem_cat.ads, sem_ch10.adb,
	sem_ch11.adb, sem_ch12.adb, sem_ch12.ads, sem_ch13.adb,
	sem_ch13.ads, sem_ch3.adb, sem_ch3.ads, sem_ch4.adb,
	sem_ch5.adb, sem_ch5.ads, sem_ch6.adb, sem_ch6.ads,
	sem_ch7.adb, sem_ch7.ads, sem_ch8.adb, sem_ch8.ads,
	sem_ch9.adb, sem_disp.adb, sem_disp.ads, sem_dist.adb,
	sem_elab.adb, sem_eval.adb, sem_eval.ads, sem_intr.adb,
	sem_maps.adb, sem_mech.adb, sem_prag.adb, sem_prag.ads,
	sem_res.adb, sem_res.ads, sem_type.adb, sem_type.ads,
	sem_util.adb, sem_util.ads, sem_warn.adb, s-errrep.adb,
	s-errrep.ads, s-exctab.adb, s-exctab.ads, s-exnint.ads,
	s-exnllf.ads, s-exnlli.ads, s-expint.ads, s-explli.ads,
	s-expuns.ads, s-fatflt.ads, s-fatgen.adb, s-fatgen.ads,
	s-fatlfl.ads, s-fatllf.ads, s-fatsfl.ads, s-fileio.adb,
	s-fileio.ads, s-finimp.adb, s-finimp.ads, s-finroo.adb,
	s-finroo.ads, sfn_scan.adb, s-gloloc.adb, s-gloloc.ads,
	s-imgdec.adb, s-imgenu.adb, s-imgrea.adb, s-imgwch.adb,
	sinfo.adb, sinfo.ads, s-inmaop.ads, sinput.adb,
	sinput.ads, sinput-d.adb, sinput-l.adb, sinput-l.ads,
	sinput-p.adb, sinput-p.ads, s-interr.adb, s-interr.ads,
	s-intman.ads, s-maccod.ads, s-mastop.adb, s-mastop.ads,
	s-memory.adb, s-memory.ads, snames.adb, snames.ads,
	snames.h, s-osprim.ads, s-parame.ads, s-parint.ads,
	s-pooloc.adb, s-pooloc.ads, s-poosiz.adb, sprint.adb,
	s-proinf.ads, s-scaval.ads, s-secsta.adb, s-secsta.ads,
	s-sequio.adb, s-shasto.adb, s-shasto.ads, s-soflin.ads,
	s-stache.adb, s-stache.ads, s-stalib.adb, s-stalib.ads,
	s-stoele.ads, s-stopoo.ads, s-stratt.adb, s-stratt.ads,
	s-strops.adb, s-strops.ads, s-taasde.adb, s-taasde.ads,
	s-tadeca.adb, s-tadeca.ads, s-tadert.adb, s-tadert.ads,
	s-taenca.adb, s-taenca.ads, s-taprob.adb, s-taprob.ads,
	s-taprop.ads, s-tarest.adb, s-tarest.ads, s-tasdeb.adb,
	s-tasdeb.ads, s-tasinf.adb, s-tasinf.ads, s-tasini.adb,
	s-tasini.ads, s-taskin.adb, s-taskin.ads, s-tasque.adb,
	s-tasque.ads, s-tasren.adb, s-tasren.ads, s-tasres.ads,
	s-tassta.adb, s-tassta.ads, s-tasuti.adb, s-tasuti.ads,
	s-tataat.adb, s-tataat.ads, s-tpinop.adb, s-tpinop.ads,
	s-tpoben.adb, s-tpoben.ads, s-tpobop.adb, s-tpobop.ads,
	s-tposen.adb, s-tposen.ads, s-traceb.adb, s-traceb.ads,
	stringt.adb, stringt.ads, stringt.h, style.ads,
	stylesw.adb, stylesw.ads, s-unstyp.ads, s-vaflop.ads,
	s-valrea.adb, s-valuti.adb, s-vercon.adb, s-vmexta.adb,
	s-wchcnv.ads, s-wchcon.ads, s-widcha.adb, switch.adb,
	switch.ads, switch-b.adb, switch-c.adb, switch-m.adb,
	s-wwdcha.adb, s-wwdwch.adb, sysdep.c, system.ads,
	table.adb, table.ads, targparm.adb, targparm.ads,
	targtyps.c, tbuild.adb, tbuild.ads, tracebak.c,
	trans.c, tree_io.adb, treepr.adb, treeprs.adt,
	ttypes.ads, types.ads, types.h, uintp.adb,
	uintp.ads, uintp.h, uname.adb, urealp.adb,
	urealp.ads, urealp.h, usage.adb, utils2.c,
	utils.c, validsw.adb, validsw.ads, widechar.adb,
	xeinfo.adb, xnmake.adb, xref_lib.adb, xref_lib.ads,
	xr_tabls.adb, xr_tabls.ads, xtreeprs.adb, xsnames.adb,
	einfo.h, sinfo.h, treeprs.ads, nmake.ads, nmake.adb,
	gnatvsn.ads: Merge with ACT tree.

	* gnatvsn.adb: Rewritten in a simpler and more efficient way.

From-SVN: r72751

1 files changed, 148 insertions, 85 deletions

diff --git a/gcc/ada/sem.ads b/gcc/ada/sem.ads
index 5d4ca46..ccd082d 100644
--- a/gcc/ada/sem.ads
+++ b/gcc/ada/sem.ads
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 S p e c                                  --
 --                                                                          --
---          Copyright (C) 1992-2001 Free Software Foundation, Inc.          --
+--          Copyright (C) 1992-2003 Free Software Foundation, Inc.          --
 --                                                                          --
 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -30,7 +30,7 @@
 
 --  Semantic processing involves 3 phases which are highly interwined
 --  (ie mutually recursive):
---
+
 --    Analysis     implements the bulk of semantic analysis such as
 --                 name analysis and type resolution for declarations,
 --                 instructions and expressions.  The main routine
@@ -41,7 +41,7 @@
 --                 For expressions this phase determines unambiguous types
 --                 and collects sets of possible types where the
 --                 interpretation is potentially ambiguous.
---
+
 --    Resolution   is carried out only for expressions to finish type
 --                 resolution that was initiated but not necessarily
 --                 completed during analysis (because of overloading
@@ -50,7 +50,7 @@
 --                 Resolve routine (see the spec of sem_res for more info)
 --                 is called to perform a top down resolution with
 --                 recursive calls to itself to resolve operands.
---
+
 --    Expansion    if we are not generating code this phase is a no-op.
 --                 otherwise this phase expands, ie transforms, original
 --                 declaration, expressions or instructions into simpler
@@ -67,7 +67,7 @@
 --                 and declarations or the call to Resolve for expressions.
 --                 The main routine driving expansion is Expand.
 --                 See the spec of Expander for more details.
---
+
 --  To summarize, in normal code generation mode we recursively traverse the
 --  abstract syntax tree top-down performing semantic analysis bottom
 --  up. For instructions and declarations, before the call to the Analyze
@@ -78,53 +78,63 @@
 --  ambiguities in the expression. Just before the call to Resolve
 --  terminates, the expression can be expanded since all the semantic
 --  information is available at that point.
---
+
 --  If we are not generating code then the expansion phase is a no-op.
---
+
 --  When generating code there are a number of exceptions to the basic
 --  Analysis-Resolution-Expansion model for expressions. The most prominent
 --  examples are the handling of default expressions and aggregates.
 
--------------------------------------
--- Handling of Default Expressions --
--------------------------------------
+----------------------------------------------------
+-- Handling of Default and Per-Object Expressions --
+----------------------------------------------------
 
 --  The default expressions in component declarations and in procedure
 --  specifications (but not the ones in object declarations) are quite
 --  tricky to handle. The problem is that some processing is required
 --  at the point where the expression appears:
---
+
 --    visibility analysis (including user defined operators)
 --    freezing of static expressions
---
+
 --  but other processing must be deferred until the enclosing entity
 --  (record or procedure specification) is frozen:
---
+
 --    freezing of any other types in the expression
 --    expansion
---
+
+--  A similar situation occurs with the argument of priority and interrupt
+--  priority pragmas that appear in task and protected definition specs and
+--  other cases of per-object expressions (see RM 3.8(18)).
+
 --  Expansion has to be deferred since you can't generate code for
 --  expressions that refernce types that have not been frozen yet. As an
 --  example, consider the following:
---
+
 --      type x is delta 0.5 range -10.0 .. +10.0;
 --      ...
 --      type q is record
 --        xx : x := y * z;
 --      end record;
---
+
 --      for x'small use 0.25
---
+
 --  The expander is in charge of dealing with fixed-point, and of course
 --  the small declaration, which is not too late, since the declaration of
 --  type q does *not* freeze type x, definitely affects the expanded code.
---
+
+--  Another reason that we cannot expand early is that expansion can generate
+--  range checks. These range checks need to be inserted not at the point of
+--  definition but at the point of use. The whole point here is that the value
+--  of the expression cannot be obtained at the point of declaration, only at
+--  the point of use.
+
 --  Generally our model is to combine analysis resolution and expansion, but
 --  this is the one case where this model falls down. Here is how we patch
 --  it up without causing too much distortion to our basic model.
---
+
 --  A switch (sede below) is set to indicate that we are in the initial
---  occurrence of a default expression. The analyzer is then called on this
+--  occurence of a default expression. The analyzer is then called on this
 --  expression with the switch set true. Analysis and resolution proceed
 --  almost as usual, except that Freeze_Expression will not freeze
 --  non-static expressions if this switch is set, and the call to Expand at
@@ -136,11 +146,13 @@
 --  expression with the switch off. The effect is that this second analysis
 --  freezes the rest of the types as required, and generates code but
 --  visibility analysis is not repeated since all the entities are marked.
---
+
 --  The second analysis (the one that generates code) is in the context
 --  where the code is required. For a record field default, this is in
 --  the initialization procedure for the record and for a subprogram
 --  default parameter, it is at the point the subprogram is frozen.
+--  For a priority or storage size pragma it is in the context of the
+--  Init_Proc for the task or protected object.
 
 ------------------
 -- Pre-Analysis --
@@ -185,7 +197,6 @@
 with Alloc;
 with Einfo;  use Einfo;
 with Opt;    use Opt;
-with Snames; use Snames;
 with Table;
 with Types;  use Types;
 
@@ -199,6 +210,11 @@ package Sem is
    -- Semantic Analysis Flags --
    -----------------------------
 
+   Explicit_Overriding : Boolean := False;
+   --  Switch to indicate whether checking mechanism described in AI-218
+   --  is enforced: subprograms that override inherited operations must be
+   --  be marked explicitly, to prevent accidental or omitted overriding.
+
    Full_Analysis : Boolean := True;
    --  Switch to indicate whether we are doing a full analysis or a
    --  pre-analysis. In normal analysis mode (Analysis-Expansion for
@@ -221,6 +237,13 @@ package Sem is
    --  When this switch is True then Full_Analysis above must be False.
    --  You should really regard this as a read only flag.
 
+   In_Deleted_Code : Boolean := False;
+   --  If the condition in an if-statement is statically known, the branch
+   --  that is not taken is analyzed with expansion disabled, and the tree
+   --  is deleted after analysis. Itypes generated in deleted code must be
+   --  frozen from start, because the tree on which they depend will not
+   --  be available at the freeze point.
+
    In_Inlined_Body : Boolean := False;
    --  Switch to indicate that we are analyzing and resolving an inlined
    --  body. Type checking is disabled in this context, because types are
@@ -246,12 +269,6 @@ package Sem is
    -- Scope Stack --
    -----------------
 
-   Scope_Suppress : Suppress_Record := Suppress_Options;
-   --  This record contains the current scope based settings of the suppress
-   --  switches. It is initialized from the options as shown, and then modified
-   --  by pragma Suppress. On entry to each scope, the current setting is saved
-   --  the scope stack, and then restored on exit from the scope.
-
    --  The scope stack holds all entries of the scope table. As in the parser,
    --  we use Last as the stack pointer, so that we can always find the scope
    --  that is currently open in Scope_Stack.Table (Scope_Stack.Last). The
@@ -259,56 +276,6 @@ package Sem is
    --  include the entity for the referenced scope, together with information
    --  used to restore the proper setting of check suppressions on scope exit.
 
-   --  There are two kinds of suppress checks, scope based suppress checks
-   --  (from initial command line arguments, or from Suppress pragmas not
-   --  including an entity name). The scope based suppress checks are recorded
-   --  in the Sem.Supress variable, and all that is necessary is to save the
-   --  state of this variable on scope entry, and restore it on scope exit.
-
-   --  The other kind of suppress check is entity based suppress checks, from
-   --  Suppress pragmas giving an Entity_Id. These checks are reflected by the
-   --  appropriate bit being set in the corresponding entity, and restoring the
-   --  setting of these bits is a little trickier. In particular a given pragma
-   --  Suppress may or may not affect the current state. If it sets a check for
-   --  an entity that is already checked, then it is important that this check
-   --  not be restored on scope exit. The situation is made more complicated
-   --  by the fact that a given suppress pragma can specify multiple entities
-   --  (in the overloaded case), and multiple checks (by using All_Checks), so
-   --  that it may be partially effective. On exit only checks that were in
-   --  fact effective must be removed. Logically we could do this by saving
-   --  the entire state of the entity flags on scope entry and restoring them
-   --  on scope exit, but that would be ludicrous, so what we do instead is to
-   --  maintain the following differential structure that shows what checks
-   --  were installed for the current scope.
-
-   --  Note: Suppress pragmas that specify entities defined in a package
-   --  spec do not make entries in this table, since such checks suppress
-   --  requests are valid for the entire life of the entity.
-
-   type Entity_Check_Suppress_Record is record
-      Entity : Entity_Id;
-      --  Entity to which the check applies
-
-      Check : Check_Id;
-      --  Check which is set (note this cannot be All_Checks, if the All_Checks
-      --  case, a sequence of eentries appears for the individual checks.
-   end record;
-
-   --  Entity_Suppress is a stack, to which new entries are added as they
-   --  are processed (see pragma Suppress circuit in Sem_Prag). The scope
-   --  stack entry simply saves the stack pointer on entry, and restores
-   --  it on exit by reversing the checks one by one.
-
-   package Entity_Suppress is new Table.Table (
-     Table_Component_Type => Entity_Check_Suppress_Record,
-     Table_Index_Type     => Int,
-     Table_Low_Bound      => 0,
-     Table_Initial        => Alloc.Entity_Suppress_Initial,
-     Table_Increment      => Alloc.Entity_Suppress_Increment,
-     Table_Name           => "Entity_Suppress");
-
-   --  Here is the scope stack itself
-
    type Scope_Stack_Entry is record
       Entity : Entity_Id;
       --  Entity representing the scope
@@ -317,11 +284,11 @@ package Sem is
       --  Pointer to name of last subprogram body in this scope. Used for
       --  testing proper alpha ordering of subprogram bodies in scope.
 
-      Save_Scope_Suppress  : Suppress_Record;
+      Save_Scope_Suppress  : Suppress_Array;
       --  Save contents of Scope_Suppress on entry
 
-      Save_Entity_Suppress : Int;
-      --  Save contents of Entity_Suppress.Last on entry
+      Save_Local_Entity_Suppress : Int;
+      --  Save contents of Local_Entity_Suppress.Last on entry
 
       Is_Transient : Boolean;
       --  Marks Transient Scopes (See Exp_Ch7 body for details)
@@ -376,11 +343,89 @@ package Sem is
      Table_Increment      => Alloc.Scope_Stack_Increment,
      Table_Name           => "Sem.Scope_Stack");
 
-   function Get_Scope_Suppress (C : Check_Id) return Boolean;
-   --  Get suppress status of check C for the current scope
+   -----------------------------------
+   -- Handling of Check Suppression --
+   -----------------------------------
 
-   procedure Set_Scope_Suppress (C : Check_Id; B : Boolean);
-   --  Set suppress status of check C for the current scope
+   --  There are two kinds of suppress checks, scope based suppress checks
+   --  (from initial command line arguments, or from Suppress pragmas not
+   --  including an entity name). The scope based suppress checks are recorded
+   --  in the Sem.Supress variable, and all that is necessary is to save the
+   --  state of this variable on scope entry, and restore it on scope exit.
+
+   --  The other kind of suppress check is entity based suppress checks, from
+   --  Suppress pragmas giving an Entity_Id. These are handled as follows. If
+   --  a suppress or unsuppress pragma is encountered for a given entity, then
+   --  the flag Checks_May_Be_Suppressed is set in the entity and an entry is
+   --  made in either the Local_Entity_Suppress table (case of pragma that
+   --  appears in other than a package spec), or in the Global_Entity_Suppress
+   --  table (case of pragma that appears in a package spec, which is by the
+   --  rule of RM 11.5(7) applicable throughout the life of the entity).
+
+   --  If the Checks_May_Be_Suppressed flag is set in an entity then the
+   --  procedure is to search first the local and then the global suppress
+   --  tables (the local one being searched in reverse order, i.e. last in
+   --  searched first). The only other point is that we have to make sure
+   --  that we have proper nested interaction between such specific pragmas
+   --  and locally applied general pragmas applying to all entities. This
+   --  is achieved by including in the Local_Entity_Suppress table dummy
+   --  entries with an empty Entity field that are applicable to all entities.
+
+   Scope_Suppress : Suppress_Array := Suppress_Options;
+   --  This array contains the current scope based settings of the suppress
+   --  switches. It is initialized from the options as shown, and then modified
+   --  by pragma Suppress. On entry to each scope, the current setting is saved
+   --  the scope stack, and then restored on exit from the scope. This record
+   --  may be rapidly checked to determine the current status of a check if
+   --  no specific entity is involved or if the specific entity involved is
+   --  one for which no specific Suppress/Unsuppress pragma has been set (as
+   --  indicated by the Checks_May_Be_Suppressed flag being set).
+
+   --  This scheme is a little complex, but serves the purpose of enabling
+   --  a very rapid check in the common case where no entity specific pragma
+   --  applies, and gives the right result when such pragmas are used even
+   --  in complex cases of nested Suppress and Unsuppress pragmas.
+
+   type Entity_Check_Suppress_Record is record
+      Entity : Entity_Id;
+      --  Entity to which the check applies, or Empty for a local check
+      --  that has no entity name (and thus applies to all entities).
+
+      Check : Check_Id;
+      --  Check which is set (note this cannot be All_Checks, if the All_Checks
+      --  case, a sequence of eentries appears for the individual checks.
+
+      Suppress : Boolean;
+      --  Set True for Suppress, and False for Unsuppress
+   end record;
+
+   --  The Local_Entity_Suppress table is a stack, to which new entries are
+   --  added for Suppress and Unsuppress pragmas appearing in other than
+   --  package specs. Such pragmas are effective only to the end of the scope
+   --  in which they appear. This is achieved by marking the stack on entry
+   --  to a scope and then cutting back the stack to that marked point on
+   --  scope exit.
+
+   package Local_Entity_Suppress is new Table.Table (
+     Table_Component_Type => Entity_Check_Suppress_Record,
+     Table_Index_Type     => Int,
+     Table_Low_Bound      => 0,
+     Table_Initial        => Alloc.Entity_Suppress_Initial,
+     Table_Increment      => Alloc.Entity_Suppress_Increment,
+     Table_Name           => "Local_Entity_Suppress");
+
+   --  The Global_Entity_Suppress table is used for entities which have
+   --  a Suppress or Unsuppress pragma naming a specific entity in a
+   --  package spec. Such pragmas always refer to entities in the package
+   --  spec and are effective throughout the lifetime of the named entity.
+
+   package Global_Entity_Suppress is new Table.Table (
+     Table_Component_Type => Entity_Check_Suppress_Record,
+     Table_Index_Type     => Int,
+     Table_Low_Bound      => 0,
+     Table_Initial        => Alloc.Entity_Suppress_Initial,
+     Table_Increment      => Alloc.Entity_Suppress_Increment,
+     Table_Name           => "Global_Entity_Suppress");
 
    -----------------
    -- Subprograms --
@@ -428,6 +473,13 @@ package Sem is
    --  then the analysis is done with the specified check suppressed (can
    --  be All_Checks to suppress all checks).
 
+   procedure Copy_Suppress_Status
+     (C    : Check_Id;
+      From : Entity_Id;
+      To   : Entity_Id);
+   --  If From is an entity for which check C is explicitly suppressed
+   --  then also explicitly suppress the corresponding check in To.
+
    procedure Insert_List_After_And_Analyze
      (N : Node_Id; L : List_Id);
    procedure Insert_List_After_And_Analyze
@@ -487,4 +539,15 @@ package Sem is
    --  exited.  S is the entity of the scope.
    --  ??? At the moment, only called for package specs exit.
 
+   function Explicit_Suppress (E : Entity_Id; C : Check_Id) return Boolean;
+   --  This function returns True if an explicit pragma Suppress for check C
+   --  is present in the package defining E.
+
+   function Is_Check_Suppressed (E : Entity_Id; C : Check_Id) return Boolean;
+   --  This function is called if Checks_May_Be_Suppressed (E) is True to
+   --  determine whether check C is suppressed either on the entity E or
+   --  as the result of a scope suppress pragma. If Checks_May_Be_Suppressed
+   --  is False, then the status of the check can be determined simply by
+   --  examining Scope_Checks (C), so this routine is not called in that case.
+
 end Sem;