* Makefile.generic: Add missing substitution on object_deps handling.

	PR ada/5909:
	* Make-lang.in (check-ada): Enable ACATS test suite.

	* exp_ch3.adb:
	(Freeze_Array_Type): We do not need an initialization routine for types
	derived from String or Wide_String. They should be treated the same
	as String and Wide_String themselves. This caused problems with the
	use of Initialize_Scalars.

	* exp_ch5.adb:
	(Expand_Assign_Record): Do component-wise assignment of non-byte aligned
	composites. This allows use of component clauses that are not byte
	aligned.

	* sem_prag.adb:
	(Analyze_Pragma, case Pack): Generate warning and ignore pack if there
	is an attempt to pack an array of atomic objects.

	* make.adb, prj-env.adb, prj-env.ads: Minor reformatting

	* g-dirope.adb:
	(Basename): Check for drive letters in a pathname only on DOS based OS.

	* make.adb:
	(Gnatmake): When unable to change dir to the object dir, display the
	content of the parent dir of the obj dir, to try to understand why this
	happens.

	* Make-lang.in: Makefile automatically updated

	* sem_ch12.adb:
	(Inline_Instance_Body): Indicate that the save/restore of use_clauses
	should not be done in Save/Restore_Scope_Stack, because it is performed
	locally.

	* sem_ch8.adb:
	(Save_Scope_Stack, Restore_Scope_Stack): Add parameter to indicate
	whether use clauses should be removed/restored.

	* sem_ch8.ads:
	(Save_Scope_Stack, Restore_Scope_Stack): Add parameter to indicate
	whether use clauses should be removed/restored.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@72983 138bc75d-0d04-0410-961f-82ee72b054a4

13 files changed, 2552 insertions, 1439 deletions

diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index af03db0b3a1..adb14dffeda 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,3 +1,60 @@
+2003-10-27  Arnaud Charlet  <charlet@act-europe.fr>
+
+	* Makefile.generic: Add missing substitution on object_deps handling.
+
+	PR ada/5909:
+	* Make-lang.in (check-ada): Enable ACATS test suite.
+
+2003-10-27  Robert Dewar  <dewar@gnat.com>
+
+	* exp_ch3.adb: 
+	(Freeze_Array_Type): We do not need an initialization routine for types
+	derived from String or Wide_String. They should be treated the same
+	as String and Wide_String themselves. This caused problems with the
+	use of Initialize_Scalars.
+
+	* exp_ch5.adb: 
+	(Expand_Assign_Record): Do component-wise assignment of non-byte aligned
+	composites. This allows use of component clauses that are not byte
+	aligned.
+
+	* sem_prag.adb: 
+	(Analyze_Pragma, case Pack): Generate warning and ignore pack if there
+	is an attempt to pack an array of atomic objects.
+
+	* make.adb, prj-env.adb, prj-env.ads: Minor reformatting
+
+2003-10-27  Pascal Obry  <obry@gnat.com>
+
+	* g-dirope.adb: 
+	(Basename): Check for drive letters in a pathname only on DOS based OS.
+
+2003-10-27  Vincent Celier  <celier@gnat.com>
+
+	* make.adb: 
+	(Gnatmake): When unable to change dir to the object dir, display the
+	content of the parent dir of the obj dir, to try to understand why this
+	happens.
+
+2003-10-27  GNAT Script  <nobody@gnat.com>
+
+	* Make-lang.in: Makefile automatically updated
+
+2003-10-27  Ed Schonberg  <schonberg@gnat.com>
+
+	* sem_ch12.adb: 
+	(Inline_Instance_Body): Indicate that the save/restore of use_clauses
+	should not be done in Save/Restore_Scope_Stack, because it is performed
+	locally.
+
+	* sem_ch8.adb: 
+	(Save_Scope_Stack, Restore_Scope_Stack): Add parameter to indicate
+	whether use clauses should be removed/restored.
+
+	* sem_ch8.ads: 
+	(Save_Scope_Stack, Restore_Scope_Stack): Add parameter to indicate
+	whether use clauses should be removed/restored.
+
 2003-10-26  Andreas Jaeger  <aj@suse.de>
 
 	* Makefile.in: Remove duplicated lines.
diff --git a/gcc/ada/Make-lang.in b/gcc/ada/Make-lang.in
index 4ce68a6057d..bbc769a9a84 100644
--- a/gcc/ada/Make-lang.in
+++ b/gcc/ada/Make-lang.in
@@ -969,7 +969,17 @@ ada.stagefeedback: stagefeedback-start
 	-$(MV) ada/*$(objext) ada/*.ali ada/b_*.c stagefeedback/ada
 	-$(MV) ada/stamp-* stagefeedback/ada
 
-check-ada:
+check-ada: check-gnat
+
+ACATSDIR = $(TESTSUITEDIR)/ada/acats
+
+check-gnat:
+	test -d $(ACATSDIR) || mkdir -p $(ACATSDIR)
+	testdir=`cd ${srcdir}/${ACATSDIR}; ${PWD_COMMAND}`; \
+	export testdir; cd $(ACATSDIR); $${testdir}/run_acats $(CHAPTERS)
+
+.PHONY: check-gnat
+
 
 # Bootstrapping targets for just GNAT - use the same stage directories
 gnatboot: force
@@ -1230,95 +1240,112 @@ ada/a-charac.o : ada/ada.ads ada/a-charac.ads ada/system.ads
 ada/a-chlat1.o : ada/ada.ads ada/a-charac.ads ada/a-chlat1.ads \
    ada/system.ads 
 
-ada/ada.o : ada/ada.ads ada/system.ads 
-
 ada/a-except.o : ada/ada.ads ada/a-except.ads ada/a-except.adb \
    ada/a-excach.adb ada/a-exexda.adb ada/a-exexpr.adb ada/a-exextr.adb \
    ada/a-excpol.adb ada/a-exstat.adb ada/a-unccon.ads ada/a-uncdea.ads \
-   ada/interfac.ads ada/system.ads ada/s-assert.ads ada/s-exctab.ads \
-   ada/s-except.ads ada/s-mastop.ads ada/s-secsta.ads ada/s-soflin.ads \
-   ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb \
-   ada/s-traceb.ads ada/s-traent.ads ada/s-unstyp.ads ada/unchconv.ads 
+   ada/interfac.ads ada/system.ads ada/s-exctab.ads ada/s-except.ads \
+   ada/s-mastop.ads ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads \
+   ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb ada/s-traceb.ads \
+   ada/s-traent.ads ada/s-traent.adb ada/s-unstyp.ads ada/unchconv.ads 
 
-ada/a-ioexce.o : ada/ada.ads ada/a-ioexce.ads ada/system.ads \
-   ada/s-exctab.ads ada/s-stalib.ads ada/unchconv.ads 
+ada/a-ioexce.o : ada/ada.ads ada/a-except.ads ada/a-ioexce.ads \
+   ada/system.ads ada/s-exctab.ads ada/s-exctab.adb ada/s-htable.ads \
+   ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads \
+   ada/s-stoele.adb ada/s-traent.ads ada/unchconv.ads 
 
-ada/ali.o : ada/ada.ads ada/a-except.ads ada/a-uncdea.ads ada/ali.ads \
-   ada/ali.adb ada/alloc.ads ada/butil.ads ada/casing.ads ada/debug.ads \
-   ada/fname.ads ada/gnat.ads ada/g-htable.ads ada/g-os_lib.ads \
-   ada/g-string.ads ada/gnatvsn.ads ada/hostparm.ads ada/namet.ads \
-   ada/opt.ads ada/osint.ads ada/output.ads ada/rident.ads ada/system.ads \
-   ada/s-assert.ads ada/s-exctab.ads ada/s-htable.ads ada/s-htable.adb \
-   ada/s-memory.ads ada/s-rident.ads ada/s-soflin.ads ada/s-stache.ads \
-   ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb ada/s-traent.ads \
-   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
-   ada/tree_io.ads ada/types.ads ada/unchconv.ads ada/unchdeal.ads 
+ada/ada.o : ada/ada.ads ada/system.ads 
 
 ada/ali-util.o : ada/ada.ads ada/a-except.ads ada/a-uncdea.ads ada/ali.ads \
    ada/ali-util.ads ada/ali-util.adb ada/alloc.ads ada/binderr.ads \
    ada/casing.ads ada/debug.ads ada/gnat.ads ada/g-htable.ads \
    ada/g-os_lib.ads ada/g-string.ads ada/gnatvsn.ads ada/hostparm.ads \
-   ada/interfac.ads ada/lib.ads ada/namet.ads ada/opt.ads ada/osint.ads \
-   ada/output.ads ada/rident.ads ada/system.ads ada/s-assert.ads \
-   ada/s-crc32.ads ada/s-exctab.ads ada/s-htable.ads ada/s-htable.adb \
-   ada/s-memory.ads ada/s-rident.ads ada/s-soflin.ads ada/s-stache.ads \
-   ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb ada/s-traent.ads \
-   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
-   ada/tree_io.ads ada/types.ads ada/unchconv.ads ada/unchdeal.ads 
+   ada/interfac.ads ada/lib.ads ada/namet.ads ada/namet.adb ada/opt.ads \
+   ada/osint.ads ada/output.ads ada/rident.ads ada/system.ads \
+   ada/s-crc32.ads ada/s-crc32.adb ada/s-exctab.ads ada/s-exctab.adb \
+   ada/s-htable.ads ada/s-htable.adb ada/s-memory.ads ada/s-rident.ads \
+   ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads \
+   ada/s-stoele.ads ada/s-stoele.adb ada/s-traent.ads ada/s-unstyp.ads \
+   ada/s-wchcon.ads ada/table.ads ada/table.adb ada/tree_io.ads \
+   ada/types.ads ada/unchconv.ads ada/unchdeal.ads ada/widechar.ads 
+
+ada/ali.o : ada/ada.ads ada/a-except.ads ada/a-uncdea.ads ada/ali.ads \
+   ada/ali.adb ada/alloc.ads ada/butil.ads ada/casing.ads ada/debug.ads \
+   ada/fname.ads ada/gnat.ads ada/g-htable.ads ada/g-os_lib.ads \
+   ada/g-string.ads ada/gnatvsn.ads ada/hostparm.ads ada/namet.ads \
+   ada/namet.adb ada/opt.ads ada/osint.ads ada/output.ads ada/rident.ads \
+   ada/system.ads ada/s-exctab.ads ada/s-exctab.adb ada/s-htable.ads \
+   ada/s-htable.adb ada/s-memory.ads ada/s-rident.ads ada/s-secsta.ads \
+   ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads \
+   ada/s-stoele.adb ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads \
+   ada/table.ads ada/table.adb ada/tree_io.ads ada/types.ads \
+   ada/unchconv.ads ada/unchdeal.ads ada/widechar.ads 
 
 ada/alloc.o : ada/alloc.ads ada/system.ads 
 
 ada/atree.o : ada/ada.ads ada/a-except.ads ada/a-uncdea.ads ada/alloc.ads \
    ada/atree.ads ada/atree.adb ada/casing.ads ada/debug.ads ada/einfo.ads \
-   ada/elists.ads ada/gnat.ads ada/g-htable.ads ada/g-os_lib.ads \
-   ada/g-string.ads ada/gnatvsn.ads ada/hostparm.ads ada/nlists.ads \
-   ada/opt.ads ada/output.ads ada/sinfo.ads ada/sinput.ads ada/snames.ads \
-   ada/system.ads ada/s-assert.ads ada/s-exctab.ads ada/s-htable.ads \
-   ada/s-htable.adb ada/s-imgenu.ads ada/s-memory.ads ada/s-secsta.ads \
+   ada/einfo.adb ada/elists.ads ada/elists.adb ada/gnat.ads \
+   ada/g-htable.ads ada/g-os_lib.ads ada/g-string.ads ada/gnatvsn.ads \
+   ada/hostparm.ads ada/namet.ads ada/nlists.ads ada/nlists.adb \
+   ada/opt.ads ada/output.ads ada/sinfo.ads ada/sinfo.adb ada/sinput.ads \
+   ada/snames.ads ada/stand.ads ada/system.ads ada/s-exctab.ads \
+   ada/s-htable.ads ada/s-htable.adb ada/s-imgenu.ads ada/s-memory.ads \
+   ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads \
+   ada/s-stoele.ads ada/s-stoele.adb ada/s-traent.ads ada/s-unstyp.ads \
+   ada/s-wchcon.ads ada/table.ads ada/table.adb ada/tree_io.ads \
+   ada/types.ads ada/uintp.ads ada/uintp.adb ada/unchconv.ads \
+   ada/unchdeal.ads ada/urealp.ads 
+
+ada/back_end.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/atree.ads \
+   ada/atree.adb ada/back_end.ads ada/back_end.adb ada/casing.ads \
+   ada/debug.ads ada/einfo.ads ada/einfo.adb ada/elists.ads ada/fname.ads \
+   ada/gnat.ads ada/g-hesora.ads ada/g-htable.ads ada/g-os_lib.ads \
+   ada/g-string.ads ada/gnatvsn.ads ada/hostparm.ads ada/lib.ads \
+   ada/lib.adb ada/lib-list.adb ada/lib-sort.adb ada/namet.ads \
+   ada/nlists.ads ada/nlists.adb ada/opt.ads ada/osint.ads ada/osint-c.ads \
+   ada/output.ads ada/sinfo.ads ada/sinfo.adb ada/sinput.ads \
+   ada/sinput.adb ada/snames.ads ada/stand.ads ada/stringt.ads \
+   ada/switch.ads ada/switch-c.ads ada/system.ads ada/s-exctab.ads \
+   ada/s-htable.ads ada/s-imgenu.ads ada/s-memory.ads ada/s-secsta.ads \
    ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads \
    ada/s-stoele.adb ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads \
    ada/table.ads ada/table.adb ada/tree_io.ads ada/types.ads ada/uintp.ads \
-   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads 
-
-ada/back_end.o : ada/alloc.ads ada/atree.ads ada/back_end.ads \
-   ada/back_end.adb ada/casing.ads ada/debug.ads ada/einfo.ads \
-   ada/elists.ads ada/gnat.ads ada/g-os_lib.ads ada/g-string.ads \
-   ada/gnatvsn.ads ada/hostparm.ads ada/lib.ads ada/namet.ads \
-   ada/nlists.ads ada/opt.ads ada/osint.ads ada/osint-c.ads ada/sinfo.ads \
-   ada/sinput.ads ada/snames.ads ada/stand.ads ada/stringt.ads \
-   ada/switch.ads ada/switch-c.ads ada/system.ads ada/s-exctab.ads \
-   ada/s-stalib.ads ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads \
-   ada/types.ads ada/uintp.ads ada/unchconv.ads ada/unchdeal.ads \
+   ada/uintp.adb ada/uname.ads ada/unchconv.ads ada/unchdeal.ads \
    ada/urealp.ads 
 
 ada/bcheck.o : ada/ada.ads ada/a-except.ads ada/ali.ads ada/ali-util.ads \
-   ada/alloc.ads ada/bcheck.ads ada/bcheck.adb ada/binderr.ads \
-   ada/butil.ads ada/casing.ads ada/fname.ads ada/gnat.ads \
-   ada/g-htable.ads ada/g-os_lib.ads ada/g-string.ads ada/gnatvsn.ads \
-   ada/hostparm.ads ada/namet.ads ada/opt.ads ada/osint.ads ada/output.ads \
-   ada/rident.ads ada/system.ads ada/s-exctab.ads ada/s-htable.ads \
-   ada/s-imgenu.ads ada/s-rident.ads ada/s-secsta.ads ada/s-soflin.ads \
+   ada/ali-util.adb ada/alloc.ads ada/bcheck.ads ada/bcheck.adb \
+   ada/binderr.ads ada/butil.ads ada/casing.ads ada/debug.ads \
+   ada/fname.ads ada/gnat.ads ada/g-htable.ads ada/g-os_lib.ads \
+   ada/g-string.ads ada/gnatvsn.ads ada/hostparm.ads ada/interfac.ads \
+   ada/lib.ads ada/namet.ads ada/namet.adb ada/opt.ads ada/osint.ads \
+   ada/output.ads ada/rident.ads ada/system.ads ada/s-crc32.ads \
+   ada/s-crc32.adb ada/s-exctab.ads ada/s-htable.ads ada/s-imgenu.ads \
+   ada/s-memory.ads ada/s-rident.ads ada/s-secsta.ads ada/s-soflin.ads \
    ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb \
    ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads \
-   ada/types.ads ada/unchconv.ads ada/unchdeal.ads 
+   ada/table.adb ada/tree_io.ads ada/types.ads ada/unchconv.ads \
+   ada/unchdeal.ads ada/widechar.ads 
 
 ada/binde.o : ada/ada.ads ada/a-except.ads ada/ali.ads ada/alloc.ads \
    ada/binde.ads ada/binde.adb ada/binderr.ads ada/butil.ads \
    ada/casing.ads ada/debug.ads ada/fname.ads ada/gnat.ads \
    ada/g-htable.ads ada/g-os_lib.ads ada/g-string.ads ada/gnatvsn.ads \
-   ada/hostparm.ads ada/lib.ads ada/namet.ads ada/opt.ads ada/output.ads \
-   ada/rident.ads ada/system.ads ada/s-assert.ads ada/s-exctab.ads \
-   ada/s-htable.ads ada/s-memory.ads ada/s-rident.ads ada/s-stalib.ads \
-   ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads \
-   ada/table.adb ada/tree_io.ads ada/types.ads ada/unchconv.ads \
-   ada/unchdeal.ads 
+   ada/hostparm.ads ada/lib.ads ada/namet.ads ada/namet.adb ada/opt.ads \
+   ada/output.ads ada/rident.ads ada/system.ads ada/s-exctab.ads \
+   ada/s-htable.ads ada/s-memory.ads ada/s-rident.ads ada/s-secsta.ads \
+   ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb ada/s-traent.ads \
+   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
+   ada/tree_io.ads ada/types.ads ada/unchconv.ads ada/unchdeal.ads \
+   ada/widechar.ads 
 
 ada/binderr.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/binderr.ads \
-   ada/binderr.adb ada/butil.ads ada/gnat.ads ada/g-string.ads \
-   ada/gnatvsn.ads ada/hostparm.ads ada/namet.ads ada/opt.ads \
-   ada/output.ads ada/system.ads ada/s-exctab.ads ada/s-stalib.ads \
-   ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads \
-   ada/types.ads ada/unchconv.ads ada/unchdeal.ads 
+   ada/binderr.adb ada/butil.ads ada/debug.ads ada/gnat.ads \
+   ada/g-os_lib.ads ada/g-string.ads ada/gnatvsn.ads ada/hostparm.ads \
+   ada/namet.ads ada/opt.ads ada/output.ads ada/system.ads \
+   ada/s-exctab.ads ada/s-memory.ads ada/s-stalib.ads ada/s-traent.ads \
+   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
+   ada/tree_io.ads ada/types.ads ada/unchconv.ads ada/unchdeal.ads 
 
 ada/bindgen.o : ada/ada.ads ada/a-except.ads ada/ali.ads ada/alloc.ads \
    ada/binde.ads ada/bindgen.ads ada/bindgen.adb ada/butil.ads \
@@ -1326,60 +1353,79 @@ ada/bindgen.o : ada/ada.ads ada/a-except.ads ada/ali.ads ada/alloc.ads \
    ada/g-hesora.ads ada/g-htable.ads ada/g-os_lib.ads ada/g-string.ads \
    ada/gnatvsn.ads ada/hostparm.ads ada/namet.ads ada/opt.ads \
    ada/osint.ads ada/osint-b.ads ada/output.ads ada/rident.ads \
-   ada/system.ads ada/s-assert.ads ada/s-exctab.ads ada/s-htable.ads \
-   ada/s-memory.ads ada/s-rident.ads ada/s-secsta.ads ada/s-soflin.ads \
-   ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb \
-   ada/s-strops.ads ada/s-sopco3.ads ada/s-sopco4.ads ada/s-sopco5.ads \
-   ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads \
-   ada/table.adb ada/targparm.ads ada/tree_io.ads ada/types.ads \
-   ada/uintp.ads ada/unchconv.ads ada/unchdeal.ads 
+   ada/system.ads ada/s-exctab.ads ada/s-htable.ads ada/s-memory.ads \
+   ada/s-rident.ads ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads \
+   ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb ada/s-strops.ads \
+   ada/s-sopco3.ads ada/s-sopco4.ads ada/s-sopco5.ads ada/s-traent.ads \
+   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
+   ada/targparm.ads ada/tree_io.ads ada/types.ads ada/uintp.ads \
+   ada/unchconv.ads ada/unchdeal.ads 
 
 ada/bindusg.o : ada/bindusg.ads ada/bindusg.adb ada/gnat.ads \
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    ada/system.ads ada/s-exctab.ads ada/s-stalib.ads ada/s-unstyp.ads \
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+   ada/stringt.ads ada/stringt.adb ada/system.ads ada/s-carun8.ads \
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    ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads 
 
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-   ada/types.ads ada/uintp.ads ada/unchconv.ads ada/unchdeal.ads \
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+   ada/s-stoele.ads ada/s-stoele.adb ada/s-traent.ads ada/unchconv.ads 
 
 ada/s-carun8.o : ada/system.ads ada/s-carun8.ads ada/s-carun8.adb \
    ada/unchconv.ads 
 
 ada/s-casuti.o : ada/system.ads ada/s-casuti.ads ada/s-casuti.adb 
 
+ada/s-crc32.o : ada/interfac.ads ada/system.ads ada/s-crc32.ads \
+   ada/s-crc32.adb 
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-   ada/s-wchcon.ads ada/table.ads ada/types.ads ada/uintp.ads \
-   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads 
+   ada/system.ads ada/s-exctab.ads ada/s-htable.ads ada/s-imgenu.ads \
+   ada/s-memory.ads ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads \
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+   ada/tree_io.ads ada/types.ads ada/uintp.ads ada/unchconv.ads \
+   ada/unchdeal.ads ada/urealp.ads ada/widechar.ads 
 
-ada/styleg.o : ada/alloc.ads ada/casing.ads ada/csets.ads ada/err_vars.ads \
-   ada/gnat.ads ada/g-string.ads ada/gnatvsn.ads ada/hostparm.ads \
-   ada/opt.ads ada/scans.ads ada/sinput.ads ada/styleg.ads ada/styleg.adb \
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-   ada/uintp.ads ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads 
+ada/styleg-c.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/atree.ads \
+   ada/casing.ads ada/csets.ads ada/debug.ads ada/einfo.ads \
+   ada/err_vars.ads ada/gnat.ads ada/g-os_lib.ads ada/g-string.ads \
+   ada/gnatvsn.ads ada/hostparm.ads ada/namet.ads ada/opt.ads \
+   ada/output.ads ada/sinfo.ads ada/sinput.ads ada/snames.ads \
+   ada/stand.ads ada/styleg.ads ada/styleg-c.ads ada/styleg-c.adb \
+   ada/stylesw.ads ada/system.ads ada/s-exctab.ads ada/s-memory.ads \
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+   ada/table.ads ada/table.adb ada/tree_io.ads ada/types.ads ada/uintp.ads \
+   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads 
 
-ada/styleg-c.o : ada/alloc.ads ada/atree.ads ada/casing.ads ada/csets.ads \
-   ada/einfo.ads ada/err_vars.ads ada/namet.ads ada/sinfo.ads \
-   ada/sinput.ads ada/snames.ads ada/stand.ads ada/styleg.ads \
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-   ada/s-exctab.ads ada/s-stalib.ads ada/s-unstyp.ads ada/table.ads \
+ada/styleg.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/casing.ads \
+   ada/csets.ads ada/debug.ads ada/err_vars.ads ada/gnat.ads \
+   ada/g-os_lib.ads ada/g-string.ads ada/gnatvsn.ads ada/hostparm.ads \
+   ada/opt.ads ada/output.ads ada/scans.ads ada/sinput.ads ada/styleg.ads \
+   ada/styleg.adb ada/stylesw.ads ada/system.ads ada/s-exctab.ads \
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    ada/types.ads ada/uintp.ads ada/unchconv.ads ada/unchdeal.ads \
    ada/urealp.ads 
 
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    ada/system.ads ada/s-exctab.ads ada/s-stalib.ads ada/s-unstyp.ads \
    ada/s-wchcon.ads ada/types.ads ada/unchconv.ads ada/unchdeal.ads 
 
-ada/s-unstyp.o : ada/system.ads ada/s-unstyp.ads 
-
-ada/s-wchcnv.o : ada/interfac.ads ada/system.ads ada/s-wchcnv.ads \
-   ada/s-wchcnv.adb ada/s-wchcon.ads ada/s-wchjis.ads 
-
-ada/s-wchcon.o : ada/system.ads ada/s-wchcon.ads 
-
-ada/s-wchjis.o : ada/system.ads ada/s-wchjis.ads ada/s-wchjis.adb 
-
-ada/switch.o : ada/ada.ads ada/a-except.ads ada/switch.ads ada/switch.adb \
-   ada/system.ads ada/s-exctab.ads ada/s-stalib.ads ada/s-traent.ads \
-   ada/s-unstyp.ads ada/types.ads ada/unchconv.ads ada/unchdeal.ads 
-
 ada/switch-b.o : ada/ada.ads ada/a-except.ads ada/debug.ads ada/gnat.ads \
    ada/g-os_lib.ads ada/g-string.ads ada/gnatvsn.ads ada/hostparm.ads \
    ada/opt.ads ada/osint.ads ada/switch.ads ada/switch-b.ads \
@@ -2948,13 +3783,20 @@ ada/switch-b.o : ada/ada.ads ada/a-except.ads ada/debug.ads ada/gnat.ads \
 
 ada/switch-c.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/debug.ads \
    ada/gnat.ads ada/g-os_lib.ads ada/g-string.ads ada/gnatvsn.ads \
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-   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/types.ads \
+   ada/hostparm.ads ada/lib.ads ada/opt.ads ada/osint.ads ada/output.ads \
+   ada/prepcomp.ads ada/stylesw.ads ada/switch.ads ada/switch-c.ads \
+   ada/switch-c.adb ada/system.ads ada/s-exctab.ads ada/s-memory.ads \
+   ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads \
+   ada/s-stoele.adb ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads \
+   ada/table.ads ada/table.adb ada/tree_io.ads ada/types.ads \
    ada/unchconv.ads ada/unchdeal.ads ada/validsw.ads 
 
+ada/switch.o : ada/ada.ads ada/a-except.ads ada/switch.ads ada/switch.adb \
+   ada/system.ads ada/s-exctab.ads ada/s-exctab.adb ada/s-htable.ads \
+   ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads \
+   ada/s-stoele.adb ada/s-traent.ads ada/s-unstyp.ads ada/types.ads \
+   ada/unchconv.ads ada/unchdeal.ads 
+
 ada/system.o : ada/system.ads 
 
 ada/table.o : ada/debug.ads ada/gnat.ads ada/g-os_lib.ads ada/g-string.ads \
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    ada/tree_io.ads ada/types.ads ada/unchconv.ads ada/unchdeal.ads 
 
 ada/targparm.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/csets.ads \
-   ada/gnat.ads ada/g-os_lib.ads ada/g-string.ads ada/gnatvsn.ads \
-   ada/hostparm.ads ada/namet.ads ada/opt.ads ada/osint.ads ada/output.ads \
-   ada/rident.ads ada/system.ads ada/s-exctab.ads ada/s-imgenu.ads \
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-   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/targparm.ads \
-   ada/targparm.adb ada/types.ads ada/uintp.ads ada/unchconv.ads \
-   ada/unchdeal.ads 
+   ada/debug.ads ada/gnat.ads ada/g-htable.ads ada/g-os_lib.ads \
+   ada/g-string.ads ada/gnatvsn.ads ada/hostparm.ads ada/namet.ads \
+   ada/namet.adb ada/opt.ads ada/osint.ads ada/output.ads ada/rident.ads \
+   ada/system.ads ada/s-exctab.ads ada/s-htable.ads ada/s-imgenu.ads \
+   ada/s-memory.ads ada/s-rident.ads ada/s-secsta.ads ada/s-soflin.ads \
+   ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb \
+   ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads \
+   ada/table.adb ada/targparm.ads ada/targparm.adb ada/tree_io.ads \
+   ada/types.ads ada/uintp.ads ada/uintp.adb ada/unchconv.ads \
+   ada/unchdeal.ads ada/widechar.ads 
 
-ada/tbuild.o : ada/alloc.ads ada/atree.ads ada/einfo.ads ada/lib.ads \
-   ada/namet.ads ada/nlists.ads ada/nmake.ads ada/restrict.ads \
-   ada/rident.ads ada/sinfo.ads ada/snames.ads ada/stand.ads \
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-   ada/table.ads ada/tbuild.ads ada/tbuild.adb ada/types.ads ada/uintp.ads \
-   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads 
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+   ada/atree.adb ada/casing.ads ada/debug.ads ada/einfo.ads ada/einfo.adb \
+   ada/elists.ads ada/fname.ads ada/gnat.ads ada/g-hesora.ads \
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+   ada/restrict.ads ada/rident.ads ada/sinfo.ads ada/sinfo.adb \
+   ada/sinput.ads ada/snames.ads ada/stand.ads ada/stringt.ads \
+   ada/system.ads ada/s-exctab.ads ada/s-htable.ads ada/s-imgenu.ads \
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+   ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads \
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+   ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
+   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/widechar.ads 
 
-ada/tree_gen.o : ada/alloc.ads ada/atree.ads ada/casing.ads ada/einfo.ads \
-   ada/elists.ads ada/fname.ads ada/gnat.ads ada/g-os_lib.ads \
-   ada/g-string.ads ada/gnatvsn.ads ada/hostparm.ads ada/lib.ads \
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-   ada/s-stalib.ads ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads \
-   ada/tree_gen.ads ada/tree_gen.adb ada/types.ads ada/uintp.ads \
-   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads 
+ada/tree_gen.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/atree.ads \
+   ada/casing.ads ada/debug.ads ada/einfo.ads ada/elists.ads ada/fname.ads \
+   ada/gnat.ads ada/g-os_lib.ads ada/g-string.ads ada/gnatvsn.ads \
+   ada/hostparm.ads ada/lib.ads ada/namet.ads ada/nlists.ads ada/opt.ads \
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+   ada/sinfo.ads ada/sinput.ads ada/snames.ads ada/stand.ads \
+   ada/stringt.ads ada/system.ads ada/s-exctab.ads ada/s-memory.ads \
+   ada/s-stalib.ads ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads \
+   ada/table.ads ada/table.adb ada/tree_gen.ads ada/tree_gen.adb \
+   ada/tree_io.ads ada/types.ads ada/uintp.ads ada/unchconv.ads \
+   ada/unchdeal.ads ada/urealp.ads 
 
 ada/tree_io.o : ada/ada.ads ada/a-except.ads ada/debug.ads ada/gnat.ads \
    ada/g-os_lib.ads ada/g-string.ads ada/output.ads ada/system.ads \
-   ada/s-exctab.ads ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads \
-   ada/s-stoele.ads ada/s-stoele.adb ada/s-traent.ads ada/s-unstyp.ads \
-   ada/tree_io.ads ada/tree_io.adb ada/types.ads ada/unchconv.ads \
-   ada/unchdeal.ads 
+   ada/s-exctab.ads ada/s-exctab.adb ada/s-htable.ads ada/s-soflin.ads \
+   ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb \
+   ada/s-traent.ads ada/s-unstyp.ads ada/tree_io.ads ada/tree_io.adb \
+   ada/types.ads ada/unchconv.ads ada/unchdeal.ads 
 
 ada/treepr.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/atree.ads \
-   ada/casing.ads ada/csets.ads ada/debug.ads ada/einfo.ads ada/elists.ads \
-   ada/lib.ads ada/namet.ads ada/nlists.ads ada/output.ads \
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-   ada/stand.ads ada/stringt.ads ada/system.ads ada/s-exctab.ads \
-   ada/s-imgenu.ads ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads \
+   ada/atree.adb ada/casing.ads ada/csets.ads ada/debug.ads ada/einfo.ads \
+   ada/einfo.adb ada/elists.ads ada/elists.adb ada/fname.ads ada/gnat.ads \
+   ada/g-hesora.ads ada/g-htable.ads ada/g-os_lib.ads ada/g-string.ads \
+   ada/gnatvsn.ads ada/hostparm.ads ada/lib.ads ada/lib.adb \
+   ada/lib-list.adb ada/lib-sort.adb ada/namet.ads ada/nlists.ads \
+   ada/nlists.adb ada/opt.ads ada/output.ads ada/output.adb \
+   ada/sem_mech.ads ada/sinfo.ads ada/sinfo.adb ada/sinput.ads \
+   ada/sinput.adb ada/snames.ads ada/stand.ads ada/stringt.ads \
+   ada/system.ads ada/s-exctab.ads ada/s-htable.ads ada/s-imgenu.ads \
+   ada/s-memory.ads ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads \
    ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb ada/s-traent.ads \
-   ada/s-unstyp.ads ada/table.ads ada/treepr.ads ada/treepr.adb \
-   ada/treeprs.ads ada/types.ads ada/uintp.ads ada/uname.ads \
+   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
+   ada/tree_io.ads ada/treepr.ads ada/treepr.adb ada/treeprs.ads \
+   ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
    ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads 
 
-ada/treeprs.o : ada/alloc.ads ada/sinfo.ads ada/system.ads \
-   ada/s-exctab.ads ada/s-stalib.ads ada/s-unstyp.ads ada/table.ads \
-   ada/treeprs.ads ada/types.ads ada/uintp.ads ada/unchconv.ads \
-   ada/unchdeal.ads ada/urealp.ads 
+ada/treeprs.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/debug.ads \
+   ada/gnat.ads ada/g-os_lib.ads ada/g-string.ads ada/gnatvsn.ads \
+   ada/hostparm.ads ada/opt.ads ada/output.ads ada/sinfo.ads \
+   ada/system.ads ada/s-exctab.ads ada/s-memory.ads ada/s-stalib.ads \
+   ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads \
+   ada/table.adb ada/tree_io.ads ada/treeprs.ads ada/types.ads \
+   ada/uintp.ads ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads 
 
 ada/ttypef.o : ada/system.ads ada/ttypef.ads 
 
@@ -3020,39 +3884,51 @@ ada/ttypes.o : ada/get_targ.ads ada/system.ads ada/s-exctab.ads \
    ada/s-stalib.ads ada/s-unstyp.ads ada/ttypes.ads ada/types.ads \
    ada/unchconv.ads ada/unchdeal.ads 
 
-ada/types.o : ada/system.ads ada/s-assert.ads ada/s-carun8.ads \
-   ada/s-exctab.ads ada/s-stalib.ads ada/s-unstyp.ads ada/types.ads \
-   ada/types.adb ada/unchconv.ads ada/unchdeal.ads 
+ada/types.o : ada/ada.ads ada/a-except.ads ada/system.ads ada/s-carun8.ads \
+   ada/s-exctab.ads ada/s-exctab.adb ada/s-htable.ads ada/s-soflin.ads \
+   ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb \
+   ada/s-traent.ads ada/s-unstyp.ads ada/types.ads ada/types.adb \
+   ada/unchconv.ads ada/unchdeal.ads 
 
 ada/uintp.o : ada/ada.ads ada/a-except.ads ada/a-uncdea.ads ada/alloc.ads \
    ada/debug.ads ada/gnat.ads ada/g-htable.ads ada/g-os_lib.ads \
    ada/g-string.ads ada/gnatvsn.ads ada/hostparm.ads ada/opt.ads \
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-   ada/table.adb ada/tree_io.ads ada/types.ads ada/uintp.ads ada/uintp.adb \
+   ada/output.ads ada/system.ads ada/s-exctab.ads ada/s-htable.ads \
+   ada/s-htable.adb ada/s-memory.ads ada/s-stalib.ads ada/s-traent.ads \
+   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
+   ada/tree_io.ads ada/types.ads ada/uintp.ads ada/uintp.adb \
    ada/unchconv.ads ada/unchdeal.ads 
 
-ada/uname.o : ada/alloc.ads ada/atree.ads ada/casing.ads ada/einfo.ads \
-   ada/hostparm.ads ada/lib.ads ada/namet.ads ada/nlists.ads \
-   ada/output.ads ada/sinfo.ads ada/sinput.ads ada/snames.ads \
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-   ada/uname.ads ada/uname.adb ada/unchconv.ads ada/unchdeal.ads \
-   ada/urealp.ads 
+ada/uname.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/atree.ads \
+   ada/atree.adb ada/casing.ads ada/debug.ads ada/einfo.ads ada/einfo.adb \
+   ada/elists.ads ada/fname.ads ada/gnat.ads ada/g-hesora.ads \
+   ada/g-htable.ads ada/g-os_lib.ads ada/g-string.ads ada/gnatvsn.ads \
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+   ada/sinput.adb ada/snames.ads ada/stand.ads ada/stringt.ads \
+   ada/system.ads ada/s-exctab.ads ada/s-htable.ads ada/s-imgenu.ads \
+   ada/s-memory.ads ada/s-secsta.ads ada/s-soflin.ads ada/s-stache.ads \
+   ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb ada/s-traent.ads \
+   ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
+   ada/tree_io.ads ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
+   ada/uname.adb ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads 
 
 ada/urealp.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/debug.ads \
+   ada/gnat.ads ada/g-htable.ads ada/g-os_lib.ads ada/g-string.ads \
+   ada/gnatvsn.ads ada/hostparm.ads ada/opt.ads ada/output.ads \
+   ada/system.ads ada/s-exctab.ads ada/s-htable.ads ada/s-memory.ads \
+   ada/s-stalib.ads ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads \
+   ada/table.ads ada/table.adb ada/tree_io.ads ada/types.ads ada/uintp.ads \
+   ada/uintp.adb ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads \
+   ada/urealp.adb 
+
+ada/usage.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/debug.ads \
    ada/gnat.ads ada/g-os_lib.ads ada/g-string.ads ada/gnatvsn.ads \
-   ada/hostparm.ads ada/opt.ads ada/output.ads ada/system.ads \
-   ada/s-assert.ads ada/s-exctab.ads ada/s-memory.ads ada/s-stalib.ads \
+   ada/hostparm.ads ada/namet.ads ada/opt.ads ada/osint.ads ada/output.ads \
+   ada/system.ads ada/s-exctab.ads ada/s-memory.ads ada/s-stalib.ads \
    ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads \
-   ada/table.adb ada/tree_io.ads ada/types.ads ada/uintp.ads \
-   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/urealp.adb 
-
-ada/usage.o : ada/alloc.ads ada/gnat.ads ada/g-os_lib.ads ada/g-string.ads \
-   ada/hostparm.ads ada/namet.ads ada/osint.ads ada/output.ads \
-   ada/system.ads ada/s-exctab.ads ada/s-stalib.ads ada/s-unstyp.ads \
-   ada/s-wchcon.ads ada/table.ads ada/types.ads ada/unchconv.ads \
+   ada/table.adb ada/tree_io.ads ada/types.ads ada/unchconv.ads \
    ada/unchdeal.ads ada/usage.ads ada/usage.adb 
 
 ada/validsw.o : ada/gnat.ads ada/g-string.ads ada/gnatvsn.ads \
diff --git a/gcc/ada/Makefile.generic b/gcc/ada/Makefile.generic
index bdba19c5052..630f6c5a740 100644
--- a/gcc/ada/Makefile.generic
+++ b/gcc/ada/Makefile.generic
@@ -157,7 +157,7 @@ $(compile_deps): force
 	@$(MAKE) -C $(dir $(subst |,:,$(@:compile_%=%))) -f Makefile.$(notdir $@) internal-compile
 
 $(object_deps): force
-	@$(MAKE) -C $(dir $(@:object_%=%)) -f Makefile.$(notdir $@) internal-archive-objects ARCHIVE=$(ARCHIVE)
+	@$(MAKE) -C $(dir $(subst |,:,$(@:object_%=%))) -f Makefile.$(notdir $@) internal-archive-objects ARCHIVE=$(ARCHIVE)
 
 $(ada_deps): force
 	@$(MAKE) -C $(dir $(subst |,:,$(@:ada_%=%))) -f Makefile.$(notdir $@) internal-ada
diff --git a/gcc/ada/exp_ch3.adb b/gcc/ada/exp_ch3.adb
index a6d058d11a4..3fd7225fb0a 100644
--- a/gcc/ada/exp_ch3.adb
+++ b/gcc/ada/exp_ch3.adb
@@ -3428,8 +3428,8 @@ package body Exp_Ch3 is
             --  initialize scalars mode, and these types are treated specially
             --  and do not need initialization procedures.
 
-            elsif Base = Standard_String
-              or else Base = Standard_Wide_String
+            elsif Root_Type (Base) = Standard_String
+              or else Root_Type (Base) = Standard_Wide_String
             then
                null;
 
diff --git a/gcc/ada/exp_ch5.adb b/gcc/ada/exp_ch5.adb
index 5fd2dc9c512..4287b752ce1 100644
--- a/gcc/ada/exp_ch5.adb
+++ b/gcc/ada/exp_ch5.adb
@@ -91,8 +91,25 @@ package body Exp_Ch5 is
 
    procedure Expand_Assign_Record (N : Node_Id);
    --  N is an assignment of a non-tagged record value. This routine handles
-   --  the special cases and checks required for such assignments, including
-   --  change of representation.
+   --  the case where the assignment must be made component by component,
+   --  either because the target is not byte aligned, or there is a change
+   --  of representation.
+
+   function Maybe_Bit_Aligned_Large_Component (N : Node_Id) return Boolean;
+   --  This function is used in processing the assignment of a record or
+   --  indexed component. The back end can handle such assignments fine
+   --  if the object involved is small (64-bits) or if it is aligned on
+   --  a byte boundary (starts on a byte, and ends on a byte). However,
+   --  problems arise for large components that are not byte aligned,
+   --  since the assignment may clobber other components that share
+   --  bit positions in the starting or ending bytes. This function is
+   --  used to detect such situations, so that the assignment can be
+   --  handled component-wise. A value of False means that either the
+   --  object is known to be greater than 64 bits, or that it is known
+   --  to be byte aligned. True is returned if the object is known to
+   --  be greater than 64 bits, and is known to be unaligned. As implied
+   --  by the name, the result is conservative, in that if the compiler
+   --  cannot determine these conditions at compile time, True is returned.
 
    function Make_Tag_Ctrl_Assignment (N : Node_Id) return List_Id;
    --  Generate the necessary code for controlled and Tagged assignment,
@@ -982,19 +999,38 @@ package body Exp_Ch5 is
    --  by field assignments.
 
    procedure Expand_Assign_Record (N : Node_Id) is
+      Lhs : constant Node_Id := Name (N);
+      Rhs : Node_Id          := Expression (N);
+
    begin
-      if not Change_Of_Representation (N) then
+      --  If change of representation, then extract the real right hand
+      --  side from the type conversion, and proceed with component-wise
+      --  assignment, since the two types are not the same as far as the
+      --  back end is concerned.
+
+      if Change_Of_Representation (N) then
+         Rhs := Expression (Rhs);
+
+      --  If this may be a case of a large bit aligned component, then
+      --  proceed with component-wise assignment, to avoid possible
+      --  clobbering of other components sharing bits in the first or
+      --  last byte of the component to be assigned.
+
+      elsif Maybe_Bit_Aligned_Large_Component (Lhs) then
+         null;
+
+      --  If neither condition met, then nothing special to do, the back end
+      --  can handle assignment of the entire component as a single entity.
+
+      else
          return;
       end if;
 
-      --  At this stage we know that the right hand side is a conversion
+      --  At this stage we know that we must do a component wise assignment
 
       declare
          Loc   : constant Source_Ptr := Sloc (N);
-         Lhs   : constant Node_Id    := Name (N);
-         Rhs   : constant Node_Id    := Expression (Expression (N));
-         R_Rec : constant Node_Id    := Expression (Expression (N));
-         R_Typ : constant Entity_Id  := Base_Type (Etype (R_Rec));
+         R_Typ : constant Entity_Id  := Base_Type (Etype (Rhs));
          L_Typ : constant Entity_Id  := Base_Type (Etype (Lhs));
          Decl  : constant Node_Id    := Declaration_Node (R_Typ);
          RDef  : Node_Id;
@@ -1002,8 +1038,7 @@ package body Exp_Ch5 is
 
          function Find_Component
            (Typ  : Entity_Id;
-            Comp : Entity_Id)
-            return Entity_Id;
+            Comp : Entity_Id) return Entity_Id;
          --  Find the component with the given name in the underlying record
          --  declaration for Typ. We need to use the actual entity because
          --  the type may be private and resolution by identifier alone would
@@ -1027,9 +1062,7 @@ package body Exp_Ch5 is
 
          function Find_Component
            (Typ  : Entity_Id;
-            Comp : Entity_Id)
-            return Entity_Id
-
+            Comp : Entity_Id) return Entity_Id
          is
             Utyp : constant Entity_Id := Underlying_Type (Typ);
             C    : Entity_Id;
@@ -3175,4 +3208,91 @@ package body Exp_Ch5 is
          return Empty_List;
    end Make_Tag_Ctrl_Assignment;
 
+   ---------------------------------------
+   -- Maybe_Bit_Aligned_Large_Component --
+   ---------------------------------------
+
+   function Maybe_Bit_Aligned_Large_Component (N : Node_Id) return Boolean is
+   begin
+      case Nkind (N) is
+
+         --  Case of indexed component
+
+         when N_Indexed_Component =>
+            declare
+               P    : constant Node_Id   := Prefix (N);
+               Ptyp : constant Entity_Id := Etype (P);
+
+            begin
+               --  If we know the component size and it is less than 64, then
+               --  we are definitely OK. The back end always does assignment
+               --  of misaligned small objects correctly.
+
+               if Known_Static_Component_Size (Ptyp)
+                 and then Component_Size (Ptyp) <= 64
+               then
+                  return False;
+
+               --  Otherwise, we need to test the prefix, to see if we are
+               --  indexing from a possibly unaligned component.
+
+               else
+                  return Maybe_Bit_Aligned_Large_Component (P);
+               end if;
+            end;
+
+         --  Case of selected component
+
+         when N_Selected_Component =>
+            declare
+               P    : constant Node_Id   := Prefix (N);
+               Comp : constant Entity_Id := Entity (Selector_Name (N));
+
+            begin
+               --  If there is no component clause, then we are in the clear
+               --  since the back end will never misalign a large component
+               --  unless it is forced to do so. In the clear means we need
+               --  only the recursive test on the prefix.
+
+               if No (Component_Clause (Comp)) then
+                  return Maybe_Bit_Aligned_Large_Component (P);
+
+               --  Otherwise we have a component clause, which means that
+               --  the Esize and Normalized_First_Bit fields are set and
+               --  contain static values known at compile time.
+
+               else
+                  --  If we know the size is 64 bits or less we are fine
+                  --  since the back end always handles small fields right.
+
+                  if Esize (Comp) <= 64 then
+                     return False;
+
+                  --  Otherwise if the component is not byte aligned, we
+                  --  know we have the nasty unaligned case.
+
+                  elsif Normalized_First_Bit (Comp) /= Uint_0
+                    or else Esize (Comp) mod System_Storage_Unit /= Uint_0
+                  then
+                     return True;
+
+                  --  If we are large and byte aligned, then OK at this level
+                  --  but we still need to test our prefix recursively.
+
+                  else
+                     return Maybe_Bit_Aligned_Large_Component (P);
+                  end if;
+               end if;
+            end;
+
+         --  If we have neither a record nor array component, it means that
+         --  we have fallen off the top testing prefixes recursively, and
+         --  we now have a stand alone object, where we don't have a problem
+
+         when others =>
+            return False;
+
+      end case;
+   end Maybe_Bit_Aligned_Large_Component;
+
 end Exp_Ch5;
diff --git a/gcc/ada/g-dirope.adb b/gcc/ada/g-dirope.adb
index ca200ebf843..321b81244c4 100644
--- a/gcc/ada/g-dirope.adb
+++ b/gcc/ada/g-dirope.adb
@@ -123,11 +123,17 @@ package body GNAT.Directory_Operations is
                        Base_Name.Path (Cut_Start - Offset .. Cut_End - Offset);
             --  Here we use Base_Name.Path to keep the original casing
 
+            Has_Drive_Letter : constant Boolean :=
+                                 OS_Lib.Path_Separator /= ':';
+            --  If Path separator is not ':' then we are on a DOS based OS
+            --  where this character is used as a drive letter separator.
+
          begin
             if BN = "." or else BN = ".." then
                return "";
 
-            elsif BN'Length > 2
+            elsif Has_Drive_Letter
+              and then BN'Length > 2
               and then Characters.Handling.Is_Letter (BN (BN'First))
               and then BN (BN'First + 1) = ':'
             then
diff --git a/gcc/ada/make.adb b/gcc/ada/make.adb
index 3ebec3d7d83..a82c99aff7f 100644
--- a/gcc/ada/make.adb
+++ b/gcc/ada/make.adb
@@ -3386,7 +3386,7 @@ package body Make is
 
                   loop
                      declare
-                        Main      : constant String := Mains.Next_Main;
+                        Main : constant String := Mains.Next_Main;
                         --  The name specified on the command line may include
                         --  directory information.
 
@@ -3416,7 +3416,7 @@ package body Make is
                            if Main /= File_Name then
                               declare
                                  Data : constant Project_Data :=
-                                   Projects.Table (Main_Project);
+                                          Projects.Table (Main_Project);
 
                                  Project_Path : constant String :=
                                    Prj.Env.File_Name_Of_Library_Unit_Body
@@ -3478,12 +3478,14 @@ package body Make is
                            end if;
 
                            if not Unique_Compile then
+
                               --  Record the project, if it is the first main
 
                               if Real_Main_Project = No_Project then
                                  Real_Main_Project := Proj;
 
                               elsif Proj /= Real_Main_Project then
+
                                  --  Fail, as the current main is not a source
                                  --  of the same project as the first main.
 
@@ -3557,11 +3559,14 @@ package body Make is
 
                   declare
                      Data : Project_Data := Projects.Table (Main_Project);
+
                      Languages : Variable_Value :=
-                       Prj.Util.Value_Of
-                         (Name_Languages, Data.Decl.Attributes);
+                                   Prj.Util.Value_Of
+                                     (Name_Languages, Data.Decl.Attributes);
+
                      Current : String_List_Id;
                      Element : String_Element;
+
                      Foreign_Language  : Boolean := False;
                      At_Least_One_Main : Boolean := False;
 
@@ -3593,8 +3598,8 @@ package body Make is
                      while Value /= Prj.Nil_String loop
                         Get_Name_String (String_Elements.Table (Value).Value);
 
-                        --  To know if a main is an Ada main, get its project;
-                        --  it should be the project specified on the command
+                        --  To know if a main is an Ada main, get its project.
+                        --  It should be the project specified on the command
                         --  line.
 
                         if (not Foreign_Language) or else
@@ -3616,6 +3621,7 @@ package body Make is
                      --  we put all sources of the main project in the Q.
 
                      if not At_Least_One_Main then
+
                         --  First make sure that the binder and the linker
                         --  will not be invoked.
 
@@ -3739,6 +3745,45 @@ package body Make is
 
          exception
             when Directory_Error =>
+
+               --  This should never happen. But, if it does, display the
+               --  content of the parent directory of the obj dir.
+
+               declare
+                  Parent : constant Dir_Name_Str :=
+                    Dir_Name
+                      (Get_Name_String
+                           (Projects.Table (Main_Project).Object_Directory));
+                  Dir : Dir_Type;
+                  Str : String (1 .. 200);
+                  Last : Natural;
+
+               begin
+                  Write_Str ("Contents of directory """);
+                  Write_Str (Parent);
+                  Write_Line (""":");
+
+                  Open (Dir, Parent);
+
+                  loop
+                     Read (Dir, Str, Last);
+                     exit when Last = 0;
+                     Write_Str ("   ");
+                     Write_Line (Str (1 .. Last));
+                  end loop;
+
+                  Close (Dir);
+
+               exception
+                  when X : others =>
+                     Write_Line ("(unexpected exception)");
+                     Write_Line (Exception_Information (X));
+
+                     if Is_Open (Dir) then
+                        Close (Dir);
+                     end if;
+               end;
+
                Make_Failed ("unable to change working directory to """,
                             Get_Name_String
                              (Projects.Table (Main_Project).Object_Directory),
diff --git a/gcc/ada/prj-env.adb b/gcc/ada/prj-env.adb
index 588352fc29f..5c3a07be0d9 100644
--- a/gcc/ada/prj-env.adb
+++ b/gcc/ada/prj-env.adb
@@ -203,10 +203,13 @@ package body Prj.Env is
       return Projects.Table (Project).Ada_Include_Path;
    end Ada_Include_Path;
 
+   ----------------------
+   -- Ada_Include_Path --
+   ----------------------
+
    function Ada_Include_Path
      (Project   : Project_Id;
-      Recursive : Boolean)
-      return      String
+      Recursive : Boolean) return String
    is
    begin
       if Recursive then
@@ -224,8 +227,7 @@ package body Prj.Env is
 
    function Ada_Objects_Path
      (Project             : Project_Id;
-      Including_Libraries : Boolean := True)
-      return                String_Access
+      Including_Libraries : Boolean := True) return String_Access
    is
       procedure Add (Project : Project_Id);
       --  Add all the object directories of a project to the path only if
@@ -1061,8 +1063,7 @@ package body Prj.Env is
      (Name              : String;
       Project           : Project_Id;
       Main_Project_Only : Boolean := True;
-      Full_Path         : Boolean := False)
-      return              String
+      Full_Path         : Boolean := False) return String
    is
       The_Project   : Project_Id := Project;
       Data          : Project_Data := Projects.Table (Project);
@@ -1547,8 +1548,7 @@ package body Prj.Env is
 
    function Path_Name_Of_Library_Unit_Body
      (Name    : String;
-      Project : Project_Id)
-      return String
+      Project : Project_Id) return String
    is
       Data : constant Project_Data := Projects.Table (Project);
       Original_Name : String := Name;
@@ -1733,8 +1733,7 @@ package body Prj.Env is
 
    function Project_Of
      (Name         : String;
-      Main_Project : Project_Id)
-      return         Project_Id
+      Main_Project : Project_Id) return Project_Id
    is
       Result : Project_Id := No_Project;
 
@@ -1777,10 +1776,13 @@ package body Prj.Env is
          Unit := Units.Table (Current);
 
          --  Check for body
+
          Current_Name := Unit.File_Names (Body_Part).Name;
+
          --  Case of a body present
 
          if Current_Name /= No_Name then
+
             --  If it has the name of the original name or the body name,
             --  we have found the project.
 
@@ -1798,6 +1800,7 @@ package body Prj.Env is
          Current_Name := Unit.File_Names (Specification).Name;
 
          if Current_Name /= No_Name then
+
             --  If name same as the original name, or the spec name, we have
             --  found the project.
 
diff --git a/gcc/ada/prj-env.ads b/gcc/ada/prj-env.ads
index 7ea02870198..8730ccb52d2 100644
--- a/gcc/ada/prj-env.ads
+++ b/gcc/ada/prj-env.ads
@@ -66,8 +66,7 @@ package Prj.Env is
 
    function Ada_Include_Path
      (Project   : Project_Id;
-      Recursive : Boolean)
-      return      String;
+      Recursive : Boolean) return String;
    --  Get the ADA_INCLUDE_PATH of a Project file. If Recursive it True,
    --  get all the source directories of the imported and modified project
    --  files (recursively). If Recursive is False, just get the path for the
@@ -76,8 +75,7 @@ package Prj.Env is
 
    function Ada_Objects_Path
      (Project             : Project_Id;
-      Including_Libraries : Boolean := True)
-      return                String_Access;
+      Including_Libraries : Boolean := True) return String_Access;
    --  Get the ADA_OBJECTS_PATH of a Project file. For the first call, compute
    --  it and cache it. When Including_Libraries is False, do not include the
    --  object directories of the library projects, and do not cache the result.
@@ -86,7 +84,7 @@ package Prj.Env is
      (Project             : Project_Id;
       Including_Libraries : Boolean);
    --  Set the env vars for additional project path files, after
-   --  creating if necessary the path files.
+   --  creating the path files if necessary.
 
    procedure Delete_All_Path_Files;
    --  Delete all temporary path files that have been created by
@@ -94,22 +92,23 @@ package Prj.Env is
 
    function Path_Name_Of_Library_Unit_Body
      (Name    : String;
-      Project : Project_Id)
-      return    String;
-   --  Returns the Path of a library unit.
+      Project : Project_Id) return String;
+   --  Returns the Path of a library unit
 
    function File_Name_Of_Library_Unit_Body
      (Name              : String;
       Project           : Project_Id;
       Main_Project_Only : Boolean := True;
-      Full_Path         : Boolean := False)
-      return              String;
+      Full_Path         : Boolean := False) return String;
    --  Returns the file name of a library unit, in canonical case. Name may or
    --  may not have an extension (corresponding to the naming scheme of the
    --  project). If there is no body with this name, but there is a spec, the
    --  name of the spec is returned.
+   --
    --  If Full_Path is False (the default), the simple file name is returned.
+   --
    --  If Full_Path is True, the absolute path name is returned.
+   --
    --  If neither a body nor a spec can be found, an empty string is returned.
    --  If Main_Project_Only is True, the unit must be an immediate source of
    --  Project. If it is False, it may be a source of one of its imported
@@ -117,8 +116,7 @@ package Prj.Env is
 
    function Project_Of
      (Name         : String;
-      Main_Project : Project_Id)
-      return         Project_Id;
+      Main_Project : Project_Id) return Project_Id;
    --  Get the project of a source. The source file name may be truncated
    --  (".adb" or ".ads" may be missing). If the source is in a project being
    --  extended, return the ultimate extending project. If it is not a source
diff --git a/gcc/ada/sem_ch12.adb b/gcc/ada/sem_ch12.adb
index 60dbbe595c3..f8ca61ea52e 100644
--- a/gcc/ada/sem_ch12.adb
+++ b/gcc/ada/sem_ch12.adb
@@ -2887,7 +2887,7 @@ package body Sem_Ch12 is
                --  Remove entities in current scopes from visibility, so
                --  than instance body is compiled in a clean environment.
 
-               Save_Scope_Stack;
+               Save_Scope_Stack (Handle_Use => False);
 
                if Is_Child_Unit (S) then
 
@@ -2951,7 +2951,7 @@ package body Sem_Ch12 is
                end loop;
             end if;
 
-            Restore_Scope_Stack;
+            Restore_Scope_Stack (Handle_Use => False);
          end if;
 
          --  Restore use clauses. For a child unit, use clauses in the
diff --git a/gcc/ada/sem_ch8.adb b/gcc/ada/sem_ch8.adb
index da29d208cef..c4ad473fe84 100644
--- a/gcc/ada/sem_ch8.adb
+++ b/gcc/ada/sem_ch8.adb
@@ -5072,7 +5072,7 @@ package body Sem_Ch8 is
    -- Restore_Scope_Stack --
    -------------------------
 
-   procedure Restore_Scope_Stack is
+   procedure Restore_Scope_Stack (Handle_Use : Boolean := True) is
       E         : Entity_Id;
       S         : Entity_Id;
       Comp_Unit : Node_Id;
@@ -5174,6 +5174,7 @@ package body Sem_Ch8 is
 
       if SS_Last >= Scope_Stack.First
         and then Scope_Stack.Table (SS_Last).Entity /= Standard_Standard
+        and then Handle_Use
       then
          Install_Use_Clauses (Scope_Stack.Table (SS_Last).First_Use_Clause);
       end if;
@@ -5183,7 +5184,7 @@ package body Sem_Ch8 is
    -- Save_Scope_Stack --
    ----------------------
 
-   procedure Save_Scope_Stack is
+   procedure Save_Scope_Stack (Handle_Use : Boolean := True) is
       E       : Entity_Id;
       S       : Entity_Id;
       SS_Last : constant Int := Scope_Stack.Last;
@@ -5192,8 +5193,9 @@ package body Sem_Ch8 is
       if SS_Last >= Scope_Stack.First
         and then Scope_Stack.Table (SS_Last).Entity /= Standard_Standard
       then
-
-         End_Use_Clauses (Scope_Stack.Table (SS_Last).First_Use_Clause);
+         if Handle_Use then
+            End_Use_Clauses (Scope_Stack.Table (SS_Last).First_Use_Clause);
+         end if;
 
          --  If the call is from within a compilation unit, as when
          --  called from Rtsfind, make current entries in scope stack
diff --git a/gcc/ada/sem_ch8.ads b/gcc/ada/sem_ch8.ads
index 87db07a074d..bdd3d53d646 100644
--- a/gcc/ada/sem_ch8.ads
+++ b/gcc/ada/sem_ch8.ads
@@ -135,14 +135,18 @@ package Sem_Ch8 is
    --  or else a with-clause on system. N is absent when the function is
    --  called to find the visibility of implicit operators.
 
-   procedure Restore_Scope_Stack;
-   procedure Save_Scope_Stack;
+   procedure Restore_Scope_Stack (Handle_Use : Boolean := True);
+   procedure Save_Scope_Stack (Handle_Use : Boolean := True);
    --  These two procedures are called from Semantics, when a unit U1 is
    --  to be compiled in the course of the compilation of another unit U2.
    --  This happens whenever Rtsfind is called. U1, the unit retrieved by
    --  Rtsfind, must be compiled in its own context, and the current scope
    --  stack containing U2 and local scopes must be made unreachable. On
    --  return, the contents of the scope stack must be made accessible again.
+   --  The flag Handle_Use indicates whether local use clauses must be
+   --  removed/installed. In the case of inlining of instance bodies, the
+   --  visiblity handling is done fully in Inline_Instance_Body, and use
+   --  clauses are handled there.
 
    procedure Set_Use (L : List_Id);
    --  Find use clauses that are declarative items in a package declaration
diff --git a/gcc/ada/sem_prag.adb b/gcc/ada/sem_prag.adb
index 57712b06d9c..d5d82b2e33d 100644
--- a/gcc/ada/sem_prag.adb
+++ b/gcc/ada/sem_prag.adb
@@ -7477,7 +7477,9 @@ package body Sem_Prag is
                   Error_Pragma
                     ("pragma% ignored, cannot pack aliased components?");
 
-               elsif Has_Atomic_Components (Typ) then
+               elsif Has_Atomic_Components (Typ)
+                 or else Is_Atomic (Component_Type (Typ))
+               then
                   Error_Pragma
                     ("?pragma% ignored, cannot pack atomic components");