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authorcharlet <charlet@138bc75d-0d04-0410-961f-82ee72b054a4>2003-10-21 13:42:24 +0000
committercharlet <charlet@138bc75d-0d04-0410-961f-82ee72b054a4>2003-10-21 13:42:24 +0000
commit9dfe12ae5b94d03c997ea2903022a5d2d5c5f266 (patch)
treebdfc70477b60f1220cb05dd233a4570dd9c6bb5c /gcc/ada/sem_elab.adb
parent1c662558a1113238a624245a45382d3df90ccf13 (diff)
downloadgcc-9dfe12ae5b94d03c997ea2903022a5d2d5c5f266.tar.gz
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, 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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, 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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. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@72751 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/ada/sem_elab.adb')
-rw-r--r--gcc/ada/sem_elab.adb220
1 files changed, 168 insertions, 52 deletions
diff --git a/gcc/ada/sem_elab.adb b/gcc/ada/sem_elab.adb
index f440f7d3cc9..9aa4d352025 100644
--- a/gcc/ada/sem_elab.adb
+++ b/gcc/ada/sem_elab.adb
@@ -6,7 +6,7 @@
-- --
-- B o d y --
-- --
--- Copyright (C) 1997-2002 Free Software Foundation, Inc. --
+-- Copyright (C) 1997-2003 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- --
@@ -30,6 +30,7 @@ with Debug; use Debug;
with Einfo; use Einfo;
with Elists; use Elists;
with Errout; use Errout;
+with Exp_Tss; use Exp_Tss;
with Exp_Util; use Exp_Util;
with Expander; use Expander;
with Fname; use Fname;
@@ -316,15 +317,12 @@ package body Sem_Elab is
Unit_Caller : Unit_Number_Type;
Unit_Callee : Unit_Number_Type;
- Cunit_SW : Boolean := False;
- -- Set to suppress warnings for case of external reference where
- -- one of the enclosing scopes has the Suppress_Elaboration_Warnings
- -- flag set. For the internal case, we ignore this flag.
-
Cunit_SC : Boolean := False;
-- Set to suppress dynamic elaboration checks where one of the
- -- enclosing scopes has Suppress_Elaboration_Checks set. For
- -- the internal case, we ignore this flag.
+ -- enclosing scopes has Elaboration_Checks_Suppressed set, or else
+ -- if a pragma Elaborate (_All) applies to that scope, in which case
+ -- warnings on the scope are also suppressed. For the internal case,
+ -- we ignore this flag.
begin
-- Go to parent for derived subprogram, or to original subprogram
@@ -332,7 +330,10 @@ package body Sem_Elab is
Ent := E;
loop
- if Suppress_Elaboration_Warnings (Ent) then
+ if (Suppress_Elaboration_Warnings (Ent)
+ or else Elaboration_Checks_Suppressed (Ent))
+ and then (Inst_Case or else No (Alias (Ent)))
+ then
return;
end if;
@@ -368,11 +369,9 @@ package body Sem_Elab is
E_Scope := Ent;
loop
- if Suppress_Elaboration_Warnings (E_Scope) then
- Cunit_SW := True;
- end if;
-
- if Suppress_Elaboration_Checks (E_Scope) then
+ if Elaboration_Checks_Suppressed (E_Scope)
+ or else Suppress_Elaboration_Warnings (E_Scope)
+ then
Cunit_SC := True;
end if;
@@ -435,9 +434,9 @@ package body Sem_Elab is
return;
end if;
- -- Nothing to do if some scope said to ignore warnings
+ -- Nothing to do if some scope said that no checks were required
- if Cunit_SW then
+ if Cunit_SC then
return;
end if;
@@ -449,10 +448,36 @@ package body Sem_Elab is
return;
end if;
- -- Nothing to do if subprogram with no separate spec
+ -- Nothing to do if subprogram with no separate spec. However,
+ -- a call to Deep_Initialize may result in a call to a user-defined
+ -- Initialize procedure, which imposes a body dependency. This
+ -- happens only if the type is controlled and the Initialize
+ -- procedure is not inherited.
if Body_Acts_As_Spec then
- return;
+ if Is_TSS (Ent, TSS_Deep_Initialize) then
+ declare
+ Typ : Entity_Id;
+ Init : Entity_Id;
+ begin
+ Typ := Etype (Next_Formal (First_Formal (Ent)));
+
+ if not Is_Controlled (Typ) then
+ return;
+ else
+ Init := Find_Prim_Op (Typ, Name_Initialize);
+
+ if Comes_From_Source (Init) then
+ Ent := Init;
+ else
+ return;
+ end if;
+ end if;
+ end;
+
+ else
+ return;
+ end if;
end if;
-- Check cases of internal units
@@ -495,7 +520,9 @@ package body Sem_Elab is
return;
end if;
- Ent := E;
+ if Is_TSS (E, TSS_Deep_Initialize) then
+ Ent := E;
+ end if;
-- If the call is in an instance, and the called entity is not
-- defined in the same instance, then the elaboration issue
@@ -573,6 +600,12 @@ package body Sem_Elab is
exit when E_Scope /= C_Scope;
Ent := Alias (Ent);
E_Scope := Ent;
+
+ -- If no alias, there is a previous error.
+
+ if No (Ent) then
+ return;
+ end if;
end loop;
end if;
@@ -581,18 +614,28 @@ package body Sem_Elab is
end if;
if not Suppress_Elaboration_Warnings (Ent)
+ and then not Elaboration_Checks_Suppressed (Ent)
and then not Suppress_Elaboration_Warnings (E_Scope)
+ and then not Elaboration_Checks_Suppressed (E_Scope)
and then Elab_Warnings
and then Generate_Warnings
then
- Warn_On_Instance := True;
-
if Inst_Case then
Error_Msg_NE
("instantiation of& may raise Program_Error?", N, Ent);
else
- Error_Msg_NE
- ("call to & may raise Program_Error?", N, Ent);
+ if Is_Init_Proc (Entity (Name (N)))
+ and then Comes_From_Source (Ent)
+ then
+ Error_Msg_NE
+ ("implicit call to & in initialization" &
+ " may raise Program_Error?", N, Ent);
+ E_Scope := Scope (Entity (Name (N)));
+
+ else
+ Error_Msg_NE
+ ("call to & may raise Program_Error?", N, Ent);
+ end if;
if Unit_Callee = No_Unit
and then E_Scope = Current_Scope
@@ -614,13 +657,12 @@ package body Sem_Elab is
("\missing pragma Elaborate_All for&?", N, E_Scope);
Error_Msg_Qual_Level := 0;
Output_Calls (N);
- Warn_On_Instance := False;
-- Set flag to prevent further warnings for same unit
-- unless in All_Errors_Mode.
if not All_Errors_Mode and not Dynamic_Elaboration_Checks then
- Set_Suppress_Elaboration_Warnings (E_Scope);
+ Set_Suppress_Elaboration_Warnings (E_Scope, True);
end if;
end if;
@@ -628,10 +670,10 @@ package body Sem_Elab is
if Dynamic_Elaboration_Checks then
if not Elaboration_Checks_Suppressed (Ent)
- and then not Suppress_Elaboration_Checks (E_Scope)
+ and then not Elaboration_Checks_Suppressed (E_Scope)
and then not Cunit_SC
then
- -- Runtime elaboration check required. generate check of the
+ -- Runtime elaboration check required. Generate check of the
-- elaboration Boolean for the unit containing the entity.
Insert_Elab_Check (N,
@@ -647,7 +689,9 @@ package body Sem_Elab is
else
if not Suppress_Elaboration_Warnings (E)
+ and then not Elaboration_Checks_Suppressed (E)
and then not Suppress_Elaboration_Warnings (E_Scope)
+ and then not Elaboration_Checks_Suppressed (E_Scope)
and then Elab_Warnings
and then Generate_Warnings
and then not Inst_Case
@@ -658,7 +702,7 @@ package body Sem_Elab is
end if;
Set_Elaborate_All_Desirable (E_Scope);
- Set_Suppress_Elaboration_Warnings (E_Scope);
+ Set_Suppress_Elaboration_Warnings (E_Scope, True);
end if;
-- Case of entity is in same unit as call or instantiation
@@ -666,7 +710,6 @@ package body Sem_Elab is
elsif not Inter_Unit_Only then
Check_Internal_Call (N, Ent, Outer_Scope, E);
end if;
-
end Check_A_Call;
-----------------------------
@@ -674,7 +717,6 @@ package body Sem_Elab is
-----------------------------
procedure Check_Bad_Instantiation (N : Node_Id) is
- Nam : Node_Id;
Ent : Entity_Id;
begin
@@ -713,7 +755,6 @@ package body Sem_Elab is
return;
end if;
- Nam := Name (N);
Ent := Get_Generic_Entity (N);
-- The case we are interested in is when the generic spec is in the
@@ -873,7 +914,6 @@ package body Sem_Elab is
-- First case, we are in elaboration code
From_Elab_Code := not In_Subprogram_Or_Concurrent_Unit;
-
if From_Elab_Code then
-- Complain if call that comes from source in preelaborated
@@ -1070,9 +1110,60 @@ package body Sem_Elab is
Inter_Unit_Only => True,
Generate_Warnings => False);
+ -- Otherwise nothing to do
+
else
return;
end if;
+
+ -- A call to an Init_Proc in elaboration code may bring additional
+ -- dependencies, if some of the record components thereof have
+ -- initializations that are function calls that come from source.
+ -- We treat the current node as a call to each of these functions,
+ -- to check their elaboration impact.
+
+ if Is_Init_Proc (Ent)
+ and then From_Elab_Code
+ then
+ Process_Init_Proc : declare
+ Unit_Decl : constant Node_Id := Unit_Declaration_Node (Ent);
+
+ function Process (Nod : Node_Id) return Traverse_Result;
+ -- Find subprogram calls within body of init_proc for
+ -- Traverse instantiation below.
+
+ function Process (Nod : Node_Id) return Traverse_Result is
+ Func : Entity_Id;
+
+ begin
+ if (Nkind (Nod) = N_Function_Call
+ or else Nkind (Nod) = N_Procedure_Call_Statement)
+ and then Is_Entity_Name (Name (Nod))
+ then
+ Func := Entity (Name (Nod));
+
+ if Comes_From_Source (Func) then
+ Check_A_Call
+ (N, Func, Standard_Standard, Inter_Unit_Only => True);
+ end if;
+
+ return OK;
+
+ else
+ return OK;
+ end if;
+ end Process;
+
+ procedure Traverse_Body is new Traverse_Proc (Process);
+
+ -- Start of processing for Process_Init_Proc
+
+ begin
+ if Nkind (Unit_Decl) = N_Subprogram_Body then
+ Traverse_Body (Handled_Statement_Sequence (Unit_Decl));
+ end if;
+ end Process_Init_Proc;
+ end if;
end Check_Elab_Call;
----------------------
@@ -1124,8 +1215,7 @@ package body Sem_Elab is
(N : Node_Id;
Outer_Scope : Entity_Id := Empty)
is
- Nam : Node_Id;
- Ent : Entity_Id;
+ Ent : Entity_Id;
begin
-- Check for and deal with bad instantiation case. There is some
@@ -1150,7 +1240,6 @@ package body Sem_Elab is
return;
end if;
- Nam := Name (N);
Ent := Get_Generic_Entity (N);
From_Elab_Code := not In_Subprogram_Or_Concurrent_Unit;
@@ -1304,6 +1393,10 @@ package body Sem_Elab is
-- Checks for call that needs checking, and if so checks
-- it. Always returns OK, so entire tree is traversed.
+ -------------
+ -- Process --
+ -------------
+
function Process (N : Node_Id) return Traverse_Result is
begin
-- If user has specified that there are no entry calls in elaboration
@@ -1445,13 +1538,10 @@ package body Sem_Elab is
-- Here is the case of calling a subprogram where the body has
-- not yet been encountered, a warning message is needed.
- Warn_On_Instance := True;
-
-- If we have nothing in the call stack, then this is at the
-- outer level, and the ABE is bound to occur.
if Elab_Call.Last = 0 then
-
if Inst_Case then
Error_Msg_NE
("?cannot instantiate& before body seen", N, Orig_Ent);
@@ -1501,6 +1591,14 @@ package body Sem_Elab is
Set_Elaboration_Flag (Sbody, E);
+ -- Kill current value indication. This is necessary
+ -- because the tests of this flag are inserted out of
+ -- sequence and must not pick up bogus indications of
+ -- the wrong constant value. Also, this is never a true
+ -- constant, since one way or another, it gets reset.
+
+ Set_Current_Value (Ent, Empty);
+ Set_Is_True_Constant (Ent, False);
Pop_Scope;
end;
end if;
@@ -1513,7 +1611,9 @@ package body Sem_Elab is
-- Generate the warning
- if not Suppress_Elaboration_Warnings (E) then
+ if not Suppress_Elaboration_Warnings (E)
+ and then not Elaboration_Checks_Suppressed (E)
+ then
if Inst_Case then
Error_Msg_NE
("instantiation of& may occur before body is seen?",
@@ -1530,8 +1630,6 @@ package body Sem_Elab is
end if;
end if;
- Warn_On_Instance := False;
-
-- Set flag to suppress further warnings on same subprogram
-- unless in all errors mode
@@ -1540,20 +1638,20 @@ package body Sem_Elab is
end if;
end Check_Internal_Call_Continue;
- ----------------------------
- -- Check_Task_Activation --
- ----------------------------
+ ---------------------------
+ -- Check_Task_Activation --
+ ---------------------------
procedure Check_Task_Activation (N : Node_Id) is
Loc : constant Source_Ptr := Sloc (N);
+ Inter_Procs : constant Elist_Id := New_Elmt_List;
+ Intra_Procs : constant Elist_Id := New_Elmt_List;
Ent : Entity_Id;
P : Entity_Id;
Task_Scope : Entity_Id;
Cunit_SC : Boolean := False;
Decl : Node_Id;
Elmt : Elmt_Id;
- Inter_Procs : Elist_Id := New_Elmt_List;
- Intra_Procs : Elist_Id := New_Elmt_List;
Enclosing : Entity_Id;
procedure Add_Task_Proc (Typ : Entity_Id);
@@ -1609,7 +1707,7 @@ package body Sem_Elab is
-- Skip this test if errors have occurred, since in this case
-- we can get false indications.
- if Total_Errors_Detected /= 0 then
+ if Serious_Errors_Detected /= 0 then
return;
end if;
@@ -1683,7 +1781,7 @@ package body Sem_Elab is
begin
while Present (Outer) loop
- if Suppress_Elaboration_Checks (Outer) then
+ if Elaboration_Checks_Suppressed (Outer) then
Cunit_SC := True;
end if;
@@ -1739,7 +1837,9 @@ package body Sem_Elab is
if not Is_Compilation_Unit (Task_Scope) then
null;
- elsif Suppress_Elaboration_Warnings (Task_Scope) then
+ elsif Suppress_Elaboration_Warnings (Task_Scope)
+ or else Elaboration_Checks_Suppressed (Task_Scope)
+ then
null;
elsif Dynamic_Elaboration_Checks then
@@ -1759,11 +1859,13 @@ package body Sem_Elab is
end if;
else
- -- Force the binder to elaborate other unit first.
+ -- Force the binder to elaborate other unit first
if not Suppress_Elaboration_Warnings (Ent)
+ and then not Elaboration_Checks_Suppressed (Ent)
and then Elab_Warnings
and then not Suppress_Elaboration_Warnings (Task_Scope)
+ and then not Elaboration_Checks_Suppressed (Task_Scope)
then
Error_Msg_Node_2 := Task_Scope;
Error_Msg_NE ("activation of an instance of task type&" &
@@ -2081,12 +2183,18 @@ package body Sem_Elab is
-- Unfortunately this does not work if the call has a dynamic size,
-- because gigi regards it as a dynamic-sized temporary. If such a call
-- appears in a short-circuit expression, the elaboration check will be
- -- missed (rare enough ???).
+ -- missed (rare enough ???). Otherwise, the code below inserts the check
+ -- at the appropriate place before the call. Same applies in the even
+ -- rarer case the return type has a known size but is unconstrained.
else
if Nkind (N) = N_Function_Call
and then Analyzed (Parent (N))
and then Size_Known_At_Compile_Time (Etype (N))
+ and then
+ (not Has_Discriminants (Etype (N))
+ or else Is_Constrained (Etype (N)))
+
then
declare
Typ : constant Entity_Id := Etype (N);
@@ -2175,7 +2283,7 @@ package body Sem_Elab is
if Is_Generic_Unit (Ent) then
Error_Msg_NE ("\?& instantiated #", N, Ent);
- elsif Chars (Ent) = Name_uInit_Proc then
+ elsif Is_Init_Proc (Ent) then
Error_Msg_N ("\?initialization procedure called #", N);
elsif Is_Printable_Error_Name (Chars (Ent)) then
@@ -2340,9 +2448,17 @@ package body Sem_Elab is
if Nkind (Item) = N_Pragma
and then Get_Pragma_Id (Chars (Item)) = Pragma_Elaborate_All
then
+ if Error_Posted (Item) then
+
+ -- Some previous error on the pragma itself
+
+ return False;
+ end if;
+
Elab_Id :=
Entity (
Expression (First (Pragma_Argument_Associations (Item))));
+
Par := Parent (Unit_Declaration_Node (Elab_Id));
Item2 := First (Context_Items (Par));