12 files changed, 1942 insertions, 2466 deletions
diff --git a/gcc/ada/Make-lang.in b/gcc/ada/Make-lang.in
index 4d2dd858899..44729ce776b 100644
--- a/gcc/ada/Make-lang.in
+++ b/gcc/ada/Make-lang.in
@@ -106,7 +106,7 @@ ADA_TOOLS_FLAGS_TO_PASS=\
 GNAT1_C_OBJS = ada/b_gnat1.o ada/adadecode.o ada/adaint.o ada/cstreams.o \
  ada/cio.o ada/targtyps.o ada/decl.o ada/misc.o ada/utils.o ada/utils2.o \
  ada/trans.o ada/cuintp.o ada/argv.o ada/raise.o ada/init.o ada/tracebak.o \
- ada/initialize.o
+ ada/initialize.o ada/env.o
 
 # Object files from Ada sources that are used by gnat1
 
@@ -161,6 +161,7 @@ GNATBIND_OBJS = \
  ada/exit.o       \
  ada/cio.o        \
  ada/cstreams.o   \
+ ada/env.o        \
  ada/final.o      \
  ada/init.o       \
  ada/initialize.o \
@@ -1100,120 +1101,97 @@ ada/a-elchha.o : ada/ada.ads ada/a-except.ads ada/a-elchha.ads \
    ada/s-traent.ads ada/unchconv.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-elchha.ads ada/a-excpol.adb ada/a-exstat.adb ada/system.ads \
-   ada/s-exctab.ads ada/s-parame.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/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-parame.ads ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads \
+   ada/a-exexda.adb ada/a-exextr.adb ada/a-elchha.ads ada/a-excpol.adb \
+   ada/a-exstat.adb ada/system.ads ada/s-exctab.ads ada/s-parame.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/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/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/csets.ads ada/debug.ads ada/err_vars.ads \
    ada/gnat.ads ada/g-htable.ads ada/g-os_lib.ads ada/g-string.ads \
-   ada/g-utf_32.ads ada/g-utf_32.adb 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/scans.ads ada/scng.ads \
-   ada/scng.adb ada/sinput.ads ada/sinput.adb ada/sinput-c.ads \
-   ada/snames.ads ada/stringt.ads ada/stringt.adb ada/styleg.ads \
-   ada/styleg.adb ada/stylesw.ads ada/system.ads ada/s-carun8.ads \
-   ada/s-crc32.ads ada/s-crc32.adb ada/s-exctab.ads ada/s-htable.ads \
-   ada/s-htable.adb ada/s-memory.ads ada/s-parame.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/types.adb ada/uintp.ads ada/uintp.adb \
-   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/urealp.adb \
-   ada/widechar.ads 
+   ada/g-utf_32.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/scans.ads ada/scng.ads ada/scng.adb ada/sinput.ads \
+   ada/sinput-c.ads ada/snames.ads ada/stringt.ads ada/styleg.ads \
+   ada/styleg.adb ada/stylesw.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-parame.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/uintp.ads \
+   ada/unchconv.ads ada/unchdeal.ads ada/urealp.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-parame.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/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-parame.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/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/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/namet.adb 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-parame.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/widechar.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-parame.ads \
+   ada/elists.ads ada/gnat.ads ada/g-htable.ads ada/g-os_lib.ads \
+   ada/g-string.ads ada/hostparm.ads ada/namet.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-parame.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/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/widechar.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/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/urealp.ads 
 
 ada/bcheck.o : ada/ada.ads ada/a-except.ads ada/ali.ads ada/ali-util.ads \
-   ada/ali-util.adb ada/alloc.ads ada/bcheck.ads ada/bcheck.adb \
-   ada/binderr.ads ada/butil.ads ada/casing.ads ada/csets.ads \
-   ada/debug.ads ada/err_vars.ads ada/fname.ads ada/gnat.ads \
-   ada/g-htable.ads ada/g-os_lib.ads ada/g-string.ads ada/g-utf_32.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/scans.ads ada/scng.ads ada/scng.adb ada/sinput.ads \
-   ada/sinput-c.ads ada/snames.ads ada/stringt.ads ada/styleg.ads \
-   ada/styleg.adb ada/stylesw.ads ada/system.ads ada/s-crc32.ads \
-   ada/s-exctab.ads ada/s-htable.ads ada/s-imgenu.ads ada/s-memory.ads \
-   ada/s-parame.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/uintp.ads \
-   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/widechar.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-parame.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/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/namet.adb ada/opt.ads \
-   ada/output.ads ada/rident.ads ada/system.ads ada/s-exctab.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-parame.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/targparm.ads ada/tree_io.ads ada/types.ads \
-   ada/unchconv.ads ada/unchdeal.ads ada/widechar.ads 
+   ada/s-stalib.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/unchconv.ads ada/unchdeal.ads 
 
 ada/binderr.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/binderr.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-parame.ads ada/s-stalib.ads \
+   ada/binderr.adb ada/butil.ads ada/gnat.ads ada/g-string.ads \
+   ada/hostparm.ads ada/namet.ads ada/opt.ads ada/output.ads \
+   ada/system.ads ada/s-exctab.ads ada/s-parame.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/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/casing.ads \
@@ -1221,872 +1199,544 @@ ada/bindgen.o : ada/ada.ads ada/a-except.ads ada/ali.ads ada/alloc.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-exctab.ads ada/s-htable.ads ada/s-memory.ads ada/s-parame.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/unchconv.ads \
-   ada/unchdeal.ads 
+   ada/s-assert.ads ada/s-exctab.ads ada/s-htable.ads ada/s-memory.ads \
+   ada/s-parame.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/unchconv.ads ada/unchdeal.ads 
 
 ada/bindusg.o : ada/bindusg.ads ada/bindusg.adb ada/gnat.ads \
    ada/g-os_lib.ads ada/g-string.ads ada/hostparm.ads ada/osint.ads \
    ada/output.ads ada/system.ads ada/s-exctab.ads ada/s-stalib.ads \
    ada/s-unstyp.ads ada/types.ads ada/unchconv.ads ada/unchdeal.ads 
 
-ada/butil.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/butil.ads \
-   ada/butil.adb 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/rident.ads ada/system.ads \
-   ada/s-exctab.ads ada/s-memory.ads ada/s-parame.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/targparm.ads ada/tree_io.ads \
-   ada/types.ads ada/unchconv.ads ada/unchdeal.ads 
+ada/butil.o : ada/alloc.ads ada/butil.ads ada/butil.adb ada/hostparm.ads \
+   ada/namet.ads ada/output.ads ada/rident.ads ada/system.ads \
+   ada/s-exctab.ads ada/s-rident.ads ada/s-stalib.ads ada/s-unstyp.ads \
+   ada/table.ads ada/targparm.ads ada/types.ads ada/unchconv.ads \
+   ada/unchdeal.ads 
 
-ada/casing.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/casing.ads \
-   ada/casing.adb ada/csets.ads ada/csets.adb 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-parame.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/widechar.ads 
+ada/casing.o : ada/alloc.ads ada/casing.ads ada/casing.adb ada/csets.ads \
+   ada/gnat.ads ada/g-string.ads ada/hostparm.ads ada/namet.ads \
+   ada/opt.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/unchdeal.ads ada/widechar.ads 
 
 ada/checks.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/atree.ads \
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+   ada/types.ads ada/uintp.ads ada/unchconv.ads ada/unchdeal.ads \
+   ada/urealp.ads ada/validsw.ads 
+
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-   ada/tree_io.ads ada/types.ads ada/unchconv.ads ada/unchdeal.ads 
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 ada/fname-uf.o : ada/ada.ads ada/a-except.ads ada/a-uncdea.ads \
    ada/alloc.ads ada/casing.ads ada/debug.ads ada/fmap.ads ada/fname.ads \
    ada/fname-uf.ads ada/fname-uf.adb ada/gnat.ads ada/g-htable.ads \
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-   ada/system.ads ada/s-exctab.ads ada/s-htable.ads ada/s-htable.adb \
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-   ada/uintp.adb ada/uname.ads ada/unchconv.ads ada/unchdeal.ads \
-   ada/urealp.ads ada/widechar.ads 
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+   ada/hostparm.ads ada/inline.ads ada/lib.ads ada/lib-load.ads \
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+   ada/tbuild.ads ada/types.ads ada/uintp.ads ada/unchconv.ads \
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 ada/g-hesora.o : ada/gnat.ads ada/g-hesora.ads ada/g-hesora.adb \
    ada/system.ads 
@@ -2165,10 +1794,10 @@ ada/g-htable.o : ada/gnat.ads ada/g-htable.ads ada/g-htable.adb \
 
 ada/g-os_lib.o : ada/ada.ads ada/a-except.ads ada/gnat.ads \
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-   ada/s-traent.ads ada/unchconv.ads ada/unchdeal.ads 
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+   ada/unchdeal.ads 
 
 ada/g-speche.o : ada/gnat.ads ada/g-speche.ads ada/g-speche.adb \
    ada/system.ads 
@@ -2186,29 +1815,25 @@ ada/get_targ.o : ada/get_targ.ads ada/get_targ.adb ada/system.ads \
 ada/gnat.o : ada/gnat.ads ada/system.ads 
 
 ada/gnat1drv.o : ada/ada.ads ada/a-except.ads ada/alloc.ads ada/atree.ads \
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-   ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/usage.ads \
-   ada/widechar.ads 
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+   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/usage.o : ada/alloc.ads ada/gnat.ads ada/g-os_lib.ads ada/g-string.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-parame.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/usage.ads ada/usage.adb 
+   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/unchdeal.ads ada/usage.ads ada/usage.adb 
 
-ada/validsw.o : ada/gnat.ads ada/g-string.ads ada/gnatvsn.ads \
-   ada/hostparm.ads ada/opt.ads 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/validsw.ads ada/validsw.adb 
+ada/validsw.o : ada/gnat.ads ada/g-string.ads ada/hostparm.ads ada/opt.ads \
+   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/validsw.ads ada/validsw.adb 
 
 ada/widechar.o : ada/ada.ads ada/a-except.ads ada/gnat.ads \
-   ada/g-string.ads ada/gnatvsn.ads ada/hostparm.ads ada/interfac.ads \
-   ada/opt.ads ada/system.ads ada/s-exctab.ads ada/s-parame.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-wchcnv.ads \
-   ada/s-wchcnv.adb ada/s-wchcon.ads ada/s-wchjis.ads ada/types.ads \
-   ada/unchconv.ads ada/unchdeal.ads ada/widechar.ads ada/widechar.adb 
+   ada/g-string.ads ada/hostparm.ads ada/interfac.ads ada/opt.ads \
+   ada/system.ads ada/s-exctab.ads ada/s-parame.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-wchcnv.ads ada/s-wchcnv.adb \
+   ada/s-wchcon.ads ada/s-wchjis.ads ada/types.ads ada/unchconv.ads \
+   ada/unchdeal.ads ada/widechar.ads ada/widechar.adb 
 
 # end of regular dependencies
diff --git a/gcc/ada/adaint.c b/gcc/ada/adaint.c
index 7594e7ba4f8..674df69bb7b 100644
--- a/gcc/ada/adaint.c
+++ b/gcc/ada/adaint.c
@@ -6,7 +6,7 @@
  *                                                                          *
  *                          C Implementation File                           *
  *                                                                          *
- *          Copyright (C) 1992-2005, Free Software Foundation, Inc.         *
+ *          Copyright (C) 1992-2006, 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- *
@@ -411,11 +411,24 @@ __gnat_symlink (char *oldpath ATTRIBUTE_UNUSED,
 int
 __gnat_try_lock (char *dir, char *file)
 {
-  char full_path[256];
   int fd;
+#ifdef __MINGW32__
+  TCHAR wfull_path[GNAT_MAX_PATH_LEN];
+  TCHAR wfile[GNAT_MAX_PATH_LEN];
+  TCHAR wdir[GNAT_MAX_PATH_LEN];
+
+  S2WS (wdir, dir, GNAT_MAX_PATH_LEN);
+  S2WS (wfile, file, GNAT_MAX_PATH_LEN);
+
+  _stprintf (wfull_path, _T("%s%c%s"), wdir, _T(DIR_SEPARATOR), wfile);
+  fd = _topen (wfull_path, O_CREAT | O_EXCL, 0600);
+#else
+  char full_path[256];
 
   sprintf (full_path, "%s%c%s", dir, DIR_SEPARATOR, file);
   fd = open (full_path, O_CREAT | O_EXCL, 0600);
+#endif
+
   if (fd < 0)
     return 0;
 
@@ -436,6 +449,7 @@ __gnat_try_lock (char *dir, char *file)
 
   sprintf (full_path, "%s%c%s", dir, DIR_SEPARATOR, file);
   fd = open (full_path, O_CREAT | O_EXCL, 0600);
+
   if (fd < 0)
     return 0;
 
@@ -522,7 +536,14 @@ __gnat_get_default_identifier_character_set (void)
 void
 __gnat_get_current_dir (char *dir, int *length)
 {
-#ifdef VMS
+#if defined (__MINGW32__)
+  TCHAR wdir[GNAT_MAX_PATH_LEN];
+
+  _tgetcwd (wdir, *length);
+
+  WS2S (dir, wdir, GNAT_MAX_PATH_LEN);
+
+#elif defined (VMS)
    /* Force Unix style, which is what GNAT uses internally.  */
    getcwd (dir, *length, 0);
 #else
@@ -604,6 +625,13 @@ __gnat_open_read (char *path, int fmode)
              "mbc=16", "deq=64", "fop=tef");
 #elif defined (__vxworks)
   fd = open (path, O_RDONLY | o_fmode, 0444);
+#elif defined (__MINGW32__)
+ {
+   TCHAR wpath[GNAT_MAX_PATH_LEN];
+
+   S2WS (wpath, path, GNAT_MAX_PATH_LEN);
+   fd = _topen (wpath, O_RDONLY | o_fmode, 0444);
+ }
 #else
   fd = open (path, O_RDONLY | o_fmode);
 #endif
@@ -638,6 +666,13 @@ __gnat_open_rw (char *path, int fmode)
 #if defined (VMS)
   fd = open (path, O_RDWR | o_fmode, PERM,
              "mbc=16", "deq=64", "fop=tef");
+#elif defined (__MINGW32__)
+  {
+    TCHAR wpath[GNAT_MAX_PATH_LEN];
+
+    S2WS (wpath, path, GNAT_MAX_PATH_LEN);
+    fd = _topen (wpath, O_RDWR | o_fmode, PERM);
+  }
 #else
   fd = open (path, O_RDWR | o_fmode, PERM);
 #endif
@@ -657,6 +692,13 @@ __gnat_open_create (char *path, int fmode)
 #if defined (VMS)
   fd = open (path, O_WRONLY | O_CREAT | O_TRUNC | o_fmode, PERM,
              "mbc=16", "deq=64", "fop=tef");
+#elif defined (__MINGW32__)
+  {
+    TCHAR wpath[GNAT_MAX_PATH_LEN];
+
+    S2WS (wpath, path, GNAT_MAX_PATH_LEN);
+    fd = _topen (wpath, O_WRONLY | O_CREAT | O_TRUNC | o_fmode, PERM);
+  }
 #else
   fd = open (path, O_WRONLY | O_CREAT | O_TRUNC | o_fmode, PERM);
 #endif
@@ -672,6 +714,13 @@ __gnat_create_output_file (char *path)
   fd = open (path, O_WRONLY | O_CREAT | O_TRUNC | O_TEXT, PERM,
              "rfm=stmlf", "ctx=rec", "rat=none", "rop=nlk",
              "shr=del,get,put,upd");
+#elif defined (__MINGW32__)
+  {
+    TCHAR wpath[GNAT_MAX_PATH_LEN];
+
+    S2WS (wpath, path, GNAT_MAX_PATH_LEN);
+    fd = _topen (wpath, O_WRONLY | O_CREAT | O_TRUNC | O_TEXT, PERM);
+  }
 #else
   fd = open (path, O_WRONLY | O_CREAT | O_TRUNC | O_TEXT, PERM);
 #endif
@@ -691,6 +740,13 @@ __gnat_open_append (char *path, int fmode)
 #if defined (VMS)
   fd = open (path, O_WRONLY | O_CREAT | O_APPEND | o_fmode, PERM,
              "mbc=16", "deq=64", "fop=tef");
+#elif defined (__MINGW32__)
+  {
+    TCHAR wpath[GNAT_MAX_PATH_LEN];
+
+    S2WS (wpath, path, GNAT_MAX_PATH_LEN);
+    fd = _topen (wpath, O_WRONLY | O_CREAT | O_APPEND | o_fmode, PERM);
+  }
 #else
   fd = open (path, O_WRONLY | O_CREAT | O_APPEND | o_fmode, PERM);
 #endif
@@ -712,6 +768,13 @@ __gnat_open_new (char *path, int fmode)
 #if defined (VMS)
   fd = open (path, O_WRONLY | O_CREAT | O_EXCL | o_fmode, PERM,
              "mbc=16", "deq=64", "fop=tef");
+#elif defined (__MINGW32__)
+  {
+    TCHAR wpath[GNAT_MAX_PATH_LEN];
+
+    S2WS (wpath, path, GNAT_MAX_PATH_LEN);
+    fd = _topen (wpath, O_WRONLY | O_CREAT | O_EXCL | o_fmode, PERM);
+  }
 #else
   fd = open (path, O_WRONLY | O_CREAT | O_EXCL | o_fmode, PERM);
 #endif
@@ -838,15 +901,44 @@ __gnat_tmp_name (char *tmp_filename)
 #endif
 }
 
+/*  Open directory and returns a DIR pointer.  */
+
+DIR* __gnat_opendir (char *name)
+{
+#ifdef __MINGW32__
+  TCHAR wname[GNAT_MAX_PATH_LEN];
+
+  S2WS (wname, name, GNAT_MAX_PATH_LEN);
+  return (DIR*)_topendir (wname);
+
+#else
+  return opendir (name);
+#endif
+}
+
 /* Read the next entry in a directory.  The returned string points somewhere
    in the buffer.  */
 
 char *
-__gnat_readdir (DIR *dirp, char *buffer)
+__gnat_readdir (DIR *dirp, char *buffer, int *len)
 {
+#if defined (__MINGW32__)
+  struct _tdirent *dirent = _treaddir ((_TDIR*)dirp);
+
+  if (dirent != NULL)
+    {
+      WS2S (buffer, dirent->d_name, GNAT_MAX_PATH_LEN);
+      *len = strlen (buffer);
+
+      return buffer;
+    }
+  else
+    return NULL;
+
+#elif defined (HAVE_READDIR_R)
   /* If possible, try to use the thread-safe version.  */
-#ifdef HAVE_READDIR_R
   if (readdir_r (dirp, buffer) != NULL)
+    *len = strlen (((struct dirent*) buffer)->d_name);
     return ((struct dirent*) buffer)->d_name;
   else
     return NULL;
@@ -857,6 +949,7 @@ __gnat_readdir (DIR *dirp, char *buffer)
   if (dirent != NULL)
     {
       strcpy (buffer, dirent->d_name);
+      *len = strlen (buffer);
       return buffer;
     }
   else
@@ -865,6 +958,18 @@ __gnat_readdir (DIR *dirp, char *buffer)
 #endif
 }
 
+/* Close a directory entry.  */
+
+int __gnat_closedir (DIR *dirp)
+{
+#ifdef __MINGW32__
+  return _tclosedir ((_TDIR*)dirp);
+
+#else
+  return closedir (dirp);
+#endif
+}
+
 /* Returns 1 if readdir is thread safe, 0 otherwise.  */
 
 int
@@ -900,8 +1005,7 @@ win32_filetime (HANDLE h)
      since <Jan 1st 1970>.  */
 
   if (GetFileTime (h, NULL, NULL, &t_write.ft_time))
-    return (time_t) (t_write.ull_time / 10000000ULL
-		     - w32_epoch_offset);
+    return (time_t) (t_write.ull_time / 10000000ULL - w32_epoch_offset);
   return (time_t) 0;
 }
 #endif
@@ -920,8 +1024,13 @@ __gnat_file_time_name (char *name)
 
 #elif defined (_WIN32)
   time_t ret = 0;
-  HANDLE h = CreateFile (name, GENERIC_READ, FILE_SHARE_READ, 0,
-			 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
+  TCHAR wname[GNAT_MAX_PATH_LEN];
+
+  S2WS (wname, name, GNAT_MAX_PATH_LEN);
+
+  HANDLE h = CreateFile
+    (wname, GENERIC_READ, FILE_SHARE_READ, 0,
+     OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
 
   if (h != INVALID_HANDLE_VALUE)
     {
@@ -1052,10 +1161,14 @@ __gnat_set_file_time_name (char *name, time_t time_stamp)
     FILETIME ft_time;
     unsigned long long ull_time;
   } t_write;
+  TCHAR wname[GNAT_MAX_PATH_LEN];
 
-  HANDLE h  = CreateFile (name, GENERIC_WRITE, FILE_SHARE_WRITE, NULL,
-			  OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS,
-			  NULL);
+  S2WS (wname, name, GNAT_MAX_PATH_LEN);
+
+  HANDLE h  = CreateFile
+    (wname, GENERIC_WRITE, FILE_SHARE_WRITE, NULL,
+     OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS,
+     NULL);
   if (h == INVALID_HANDLE_VALUE)
     return;
   /* Add number of seconds between <Jan 1st 1601> and <Jan 1st 1970> */
@@ -1122,7 +1235,13 @@ __gnat_set_file_time_name (char *name, time_t time_stamp)
   struct dsc$descriptor_s resultdsc
     = {NAM$C_MAXRSS, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, (void *) result.string};
 
-  tryfile = (char *) __gnat_to_host_dir_spec (name, 0);
+  /* Convert parameter name (a file spec) to host file form. Note that this
+     is needed on VMS to prepare for subsequent calls to VMS RMS library
+     routines. Note that it would not work to call __gnat_to_host_dir_spec
+     as was done in a previous version, since this fails silently unless
+     the feature logical DECC$EFS_CHARSET is enabled, in which case a DNF
+     (directory not found) condition is signalled.  */
+  tryfile = (char *) __gnat_to_host_file_spec (name);
 
   /* Allocate and initialize a FAB and NAM structures.  */
   fab = cc$rms_fab;
@@ -1238,123 +1357,6 @@ __gnat_set_file_time_name (char *name, time_t time_stamp)
 #endif
 }
 
-void
-__gnat_get_env_value_ptr (char *name, int *len, char **value)
-{
-  *value = getenv (name);
-  if (!*value)
-    *len = 0;
-  else
-    *len = strlen (*value);
-
-  return;
-}
-
-/* VMS specific declarations for set_env_value.  */
-
-#ifdef VMS
-
-static char *to_host_path_spec (char *);
-
-struct descriptor_s
-{
-  unsigned short len, mbz;
-  __char_ptr32 adr;
-};
-
-typedef struct _ile3
-{
-  unsigned short len, code;
-  __char_ptr32 adr;
-  unsigned short *retlen_adr;
-} ile_s;
-
-#endif
-
-void
-__gnat_set_env_value (char *name, char *value)
-{
-#ifdef MSDOS
-
-#elif defined (VMS)
-  struct descriptor_s name_desc;
-  /* Put in JOB table for now, so that the project stuff at least works.  */
-  struct descriptor_s table_desc = {7, 0, "LNM$JOB"};
-  char *host_pathspec = value;
-  char *copy_pathspec;
-  int num_dirs_in_pathspec = 1;
-  char *ptr;
-  long status;
-
-  name_desc.len = strlen (name);
-  name_desc.mbz = 0;
-  name_desc.adr = name;
-
-  if (*host_pathspec == 0)
-    /* deassign */
-    {
-      status = LIB$DELETE_LOGICAL (&name_desc, &table_desc);
-      /* no need to check status; if the logical name is not
-         defined, that's fine. */
-      return;
-    }
-
-  ptr = host_pathspec;
-  while (*ptr++)
-    if (*ptr == ',')
-      num_dirs_in_pathspec++;
-
-  {
-    int i, status;
-    ile_s *ile_array = alloca (sizeof (ile_s) * (num_dirs_in_pathspec + 1));
-    char *copy_pathspec = alloca (strlen (host_pathspec) + 1);
-    char *curr, *next;
-
-    strcpy (copy_pathspec, host_pathspec);
-    curr = copy_pathspec;
-    for (i = 0; i < num_dirs_in_pathspec; i++)
-      {
-	next = strchr (curr, ',');
-	if (next == 0)
-	  next = strchr (curr, 0);
-
-	*next = 0;
-	ile_array[i].len = strlen (curr);
-
-	/* Code 2 from lnmdef.h means it's a string.  */
-	ile_array[i].code = 2;
-	ile_array[i].adr = curr;
-
-	/* retlen_adr is ignored.  */
-	ile_array[i].retlen_adr = 0;
-	curr = next + 1;
-      }
-
-    /* Terminating item must be zero.  */
-    ile_array[i].len = 0;
-    ile_array[i].code = 0;
-    ile_array[i].adr = 0;
-    ile_array[i].retlen_adr = 0;
-
-    status = LIB$SET_LOGICAL (&name_desc, 0, &table_desc, 0, ile_array);
-    if ((status & 1) != 1)
-      LIB$SIGNAL (status);
-  }
-
-#elif defined (__vxworks) && defined (__RTP__)
-  setenv (name, value, 1);
-
-#else
-  int size = strlen (name) + strlen (value) + 2;
-  char *expression;
-
-  expression = (char *) xmalloc (size * sizeof (char));
-
-  sprintf (expression, "%s=%s", name, value);
-  putenv (expression);
-#endif
-}
-
 #ifdef _WIN32
 #include <windows.h>
 #endif
@@ -1396,7 +1398,7 @@ __gnat_get_libraries_from_registry (void)
   for (index = 0; res == ERROR_SUCCESS; index++)
     {
       value_size = name_size = 256;
-      res = RegEnumValue (reg_key, index, name, &name_size, 0,
+      res = RegEnumValue (reg_key, index, (TCHAR*)name, &name_size, 0,
                           &type, (LPBYTE)value, &value_size);
 
       if (res == ERROR_SUCCESS && type == REG_SZ)
@@ -1421,29 +1423,34 @@ __gnat_get_libraries_from_registry (void)
 int
 __gnat_stat (char *name, struct stat *statbuf)
 {
-#ifdef _WIN32
+#ifdef __MINGW32__
   /* Under Windows the directory name for the stat function must not be
      terminated by a directory separator except if just after a drive name.  */
-  int name_len  = strlen (name);
-  char last_char = name[name_len - 1];
-  char win32_name[GNAT_MAX_PATH_LEN + 2];
+  TCHAR wname [GNAT_MAX_PATH_LEN + 2];
+  int name_len;
+  TCHAR last_char;
+
+  S2WS (wname, name, GNAT_MAX_PATH_LEN + 2);
+  name_len = _tcslen (wname);
 
   if (name_len > GNAT_MAX_PATH_LEN)
     return -1;
 
-  strcpy (win32_name, name);
+  last_char = wname[name_len - 1];
 
-  while (name_len > 1 && (last_char == '\\' || last_char == '/'))
+  while (name_len > 1 && (last_char == _T('\\') || last_char == _T('/')))
     {
-      win32_name[name_len - 1] = '\0';
+      wname[name_len - 1] = _T('\0');
       name_len--;
-      last_char = win32_name[name_len - 1];
+      last_char = wname[name_len - 1];
     }
 
-  if (name_len == 2 && win32_name[1] == ':')
-    strcat (win32_name, "\\");
+  /* Only a drive letter followed by ':', we must add a directory separator
+     for the stat routine to work properly.  */
+  if (name_len == 2 && wname[1] == _T(':'))
+    _tcscat (wname, _T("\\"));
 
-  return stat (win32_name, statbuf);
+  return _tstat (wname, statbuf);
 
 #else
   return stat (name, statbuf);
@@ -1811,11 +1818,20 @@ win32_no_block_spawn (char *command, char *args[])
       k++;
     }
 
-  result = CreateProcess
-	     (NULL, (char *) full_command, &SA, NULL, TRUE,
-              GetPriorityClass (GetCurrentProcess()), NULL, NULL, &SI, &PI);
+  {
+    int wsize = csize * 2;
+    TCHAR *wcommand = (TCHAR *) xmalloc (wsize);
+
+    S2WS (wcommand, full_command, wsize);
+
+    free (full_command);
 
-  free (full_command);
+    result = CreateProcess
+      (NULL, wcommand, &SA, NULL, TRUE,
+       GetPriorityClass (GetCurrentProcess()), NULL, NULL, &SI, &PI);
+
+    free (wcommand);
+  }
 
   if (result == TRUE)
     {
@@ -2075,33 +2091,42 @@ char *
 __gnat_locate_exec_on_path (char *exec_name)
 {
   char *apath_val;
-#ifdef VMS
-  char *path_val = "/VAXC$PATH";
-#else
-  char *path_val = getenv ("PATH");
-#endif
+
 #ifdef _WIN32
+  TCHAR *wpath_val = _tgetenv (_T("PATH"));
+  TCHAR *wapath_val;
   /* In Win32 systems we expand the PATH as for XP environment
      variables are not automatically expanded. We also prepend the
      ".;" to the path to match normal NT path search semantics */
 
   #define EXPAND_BUFFER_SIZE 32767
 
-  apath_val = alloca (EXPAND_BUFFER_SIZE);
+  wapath_val = alloca (EXPAND_BUFFER_SIZE);
 
-  apath_val [0] = '.';
-  apath_val [1] = ';';
+  wapath_val [0] = '.';
+  wapath_val [1] = ';';
 
   DWORD res = ExpandEnvironmentStrings
-    (path_val, apath_val + 2, EXPAND_BUFFER_SIZE - 2);
+    (wpath_val, &wapath_val[2], EXPAND_BUFFER_SIZE - 2);
+
+  if (!res) wapath_val [0] = _T('\0');
+
+  apath_val = alloca (EXPAND_BUFFER_SIZE);
+
+  WS2S (apath_val, wapath_val, EXPAND_BUFFER_SIZE);
+  return __gnat_locate_exec (exec_name, apath_val);
 
-  if (!res) apath_val [0] = '\0';
 #else
+
+#ifdef VMS
+  char *path_val = "/VAXC$PATH";
+#else
+  char *path_val = getenv ("PATH");
+#endif
   apath_val = alloca (strlen (path_val) + 1);
   strcpy (apath_val, path_val);
-#endif
-
   return __gnat_locate_exec (exec_name, apath_val);
+#endif
 }
 
 #ifdef VMS
@@ -2556,6 +2581,7 @@ _flush_cache()
       && ! defined (__APPLE__) \
       && ! defined (_AIX) \
       && ! (defined (__alpha__)  && defined (__osf__)) \
+      && ! defined (VMS) \
       && ! defined (__MINGW32__) \
       && ! (defined (__mips) && defined (__sgi)))
 
diff --git a/gcc/ada/adaint.h b/gcc/ada/adaint.h
index 70ee1d0a594..9bcf05886b7 100644
--- a/gcc/ada/adaint.h
+++ b/gcc/ada/adaint.h
@@ -6,7 +6,7 @@
  *                                                                          *
  *                              C Header File                               *
  *                                                                          *
- *          Copyright (C) 1992-2005, Free Software Foundation, Inc.         *
+ *          Copyright (C) 1992-2006, 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 +30,13 @@
  *                                                                          *
  ****************************************************************************/
 
+#include <sys/stat.h>
 #include <stdio.h>
+
+#ifdef _WIN32
+#include "mingw32.h"
+#endif
+
 #include <dirent.h>
 
 typedef long OS_Time; /* Type corresponding to GNAT.OS_Lib.OS_Time */
@@ -68,7 +74,9 @@ extern int    __gnat_open_append                   (char *, int);
 extern long   __gnat_file_length                   (int);
 extern long   __gnat_named_file_length             (char *);
 extern void   __gnat_tmp_name			   (char *);
-extern char  *__gnat_readdir                       (DIR *, char *);
+extern DIR   *__gnat_opendir                       (char *);
+extern char  *__gnat_readdir                       (DIR *, char *, int *);
+extern int    __gnat_closedir                      (DIR *);
 extern int    __gnat_readdir_is_thread_safe        (void);
 
 extern OS_Time __gnat_file_time_name                (char *);
@@ -76,8 +84,7 @@ extern OS_Time __gnat_file_time_fd                  (int);
 /* return -1 in case of error */
 
 extern void   __gnat_set_file_time_name		   (char *, time_t);
-extern void   __gnat_get_env_value_ptr             (char *, int *,
-						    char **);
+
 extern int    __gnat_dup			   (int);
 extern int    __gnat_dup2			   (int, int);
 extern int    __gnat_file_exists		   (char *);
@@ -98,7 +105,6 @@ extern char  *__gnat_locate_exec_on_path	   (char *);
 extern char  *__gnat_locate_regular_file           (char *, char *);
 extern void   __gnat_maybe_glob_args               (int *, char ***);
 extern void   __gnat_os_exit			   (int);
-extern void   __gnat_set_env_value		   (char *, char *);
 extern char  *__gnat_get_libraries_from_registry   (void);
 extern int    __gnat_to_canonical_file_list_init   (char *, int);
 extern char  *__gnat_to_canonical_file_list_next   (void);
diff --git a/gcc/ada/env.c b/gcc/ada/env.c
new file mode 100644
index 00000000000..039e09ced6e
--- /dev/null
+++ b/gcc/ada/env.c
@@ -0,0 +1,314 @@
+/****************************************************************************
+ *                                                                          *
+ *                         GNAT COMPILER COMPONENTS                         *
+ *                                                                          *
+ *                                  E N V                                   *
+ *                                                                          *
+ *                          C Implementation File                           *
+ *                                                                          *
+ *            Copyright (C) 2005-2006, 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- *
+ * ware  Foundation;  either version 2,  or (at your option) any later ver- *
+ * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
+ * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License *
+ * for  more details.  You should have  received  a copy of the GNU General *
+ * Public License  distributed with GNAT;  see file COPYING.  If not, write *
+ * to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, *
+ * Boston, MA 02110-1301, USA.                                              *
+ *                                                                          *
+ * As a  special  exception,  if you  link  this file  with other  files to *
+ * produce an executable,  this file does not by itself cause the resulting *
+ * executable to be covered by the GNU General Public License. This except- *
+ * ion does not  however invalidate  any other reasons  why the  executable *
+ * file might be covered by the  GNU Public License.                        *
+ *                                                                          *
+ * GNAT was originally developed  by the GNAT team at  New York University. *
+ * Extensive contributions were provided by Ada Core Technologies Inc.      *
+ *                                                                          *
+ ****************************************************************************/
+
+#ifdef IN_RTS
+#include "tconfig.h"
+#include "tsystem.h"
+
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <time.h>
+#ifdef VMS
+#include <unixio.h>
+#endif
+
+#if defined (__APPLE__)
+#include <crt_externs.h>
+#endif
+
+#if defined (__MINGW32__)
+#include <stdlib.h>
+#endif
+
+#if defined (__vxworks) && ! (defined (__RTP__) || defined (__COREOS__))
+#include "envLib.h"
+extern char** ppGlobalEnviron;
+#endif
+
+/* We don't have libiberty, so use malloc.  */
+#define xmalloc(S) malloc (S)
+#else /* IN_RTS */
+#include "config.h"
+#include "system.h"
+#endif /* IN_RTS */
+
+#include "env.h"
+
+void
+__gnat_getenv (char *name, int *len, char **value)
+{
+  *value = getenv (name);
+  if (!*value)
+    *len = 0;
+  else
+    *len = strlen (*value);
+
+  return;
+}
+
+/* VMS specific declarations for set_env_value.  */
+
+#ifdef VMS
+
+static char *to_host_path_spec (char *);
+
+struct descriptor_s
+{
+  unsigned short len, mbz;
+  __char_ptr32 adr;
+};
+
+typedef struct _ile3
+{
+  unsigned short len, code;
+  __char_ptr32 adr;
+  unsigned short *retlen_adr;
+} ile_s;
+
+#endif
+
+void
+__gnat_setenv (char *name, char *value)
+{
+#ifdef MSDOS
+
+#elif defined (VMS)
+  struct descriptor_s name_desc;
+  /* Put in JOB table for now, so that the project stuff at least works.  */
+  struct descriptor_s table_desc = {7, 0, "LNM$JOB"};
+  char *host_pathspec = value;
+  char *copy_pathspec;
+  int num_dirs_in_pathspec = 1;
+  char *ptr;
+  long status;
+
+  name_desc.len = strlen (name);
+  name_desc.mbz = 0;
+  name_desc.adr = name;
+
+  if (*host_pathspec == 0)
+    /* deassign */
+    {
+      status = LIB$DELETE_LOGICAL (&name_desc, &table_desc);
+      /* no need to check status; if the logical name is not
+         defined, that's fine. */
+      return;
+    }
+
+  ptr = host_pathspec;
+  while (*ptr++)
+    if (*ptr == ',')
+      num_dirs_in_pathspec++;
+
+  {
+    int i, status;
+    ile_s *ile_array = alloca (sizeof (ile_s) * (num_dirs_in_pathspec + 1));
+    char *copy_pathspec = alloca (strlen (host_pathspec) + 1);
+    char *curr, *next;
+
+    strcpy (copy_pathspec, host_pathspec);
+    curr = copy_pathspec;
+    for (i = 0; i < num_dirs_in_pathspec; i++)
+      {
+	next = strchr (curr, ',');
+	if (next == 0)
+	  next = strchr (curr, 0);
+
+	*next = 0;
+	ile_array[i].len = strlen (curr);
+
+	/* Code 2 from lnmdef.h means it's a string.  */
+	ile_array[i].code = 2;
+	ile_array[i].adr = curr;
+
+	/* retlen_adr is ignored.  */
+	ile_array[i].retlen_adr = 0;
+	curr = next + 1;
+      }
+
+    /* Terminating item must be zero.  */
+    ile_array[i].len = 0;
+    ile_array[i].code = 0;
+    ile_array[i].adr = 0;
+    ile_array[i].retlen_adr = 0;
+
+    status = LIB$SET_LOGICAL (&name_desc, 0, &table_desc, 0, ile_array);
+    if ((status & 1) != 1)
+      LIB$SIGNAL (status);
+  }
+
+#elif defined (__vxworks) && defined (__RTP__)
+  setenv (name, value, 1);
+
+#else
+  int size = strlen (name) + strlen (value) + 2;
+  char *expression;
+
+  expression = (char *) xmalloc (size * sizeof (char));
+
+  sprintf (expression, "%s=%s", name, value);
+  putenv (expression);
+#if defined (__FreeBSD__) || defined (__APPLE__) || defined (__MINGW32__) \
+   ||(defined (__vxworks) && ! defined (__RTP__))
+  /* On some systems like FreeBSD, MacOS X and Windows, putenv is making
+     a copy of the expression string so we can free it after the call to
+     putenv */
+  free (expression);
+#endif
+#endif
+}
+
+char **
+__gnat_environ (void)
+{
+#if defined (VMS)
+  /* Not implemented */
+  return NULL;
+#elif defined (__APPLE__)
+  char ***result = _NSGetEnviron ();
+  return *result;
+#elif defined (__MINGW32__)
+  return _environ;
+#elif defined (sun)
+  extern char **_environ;
+  return _environ;
+#else
+#if ! (defined (__vxworks) && ! (defined (__RTP__) || defined (__COREOS__)))
+  /* in VxWorks kernel mode environ is macro and not a variable */
+  /* same thing on 653 in the CoreOS */
+  extern char **environ;
+#endif
+  return environ;
+#endif
+}
+
+void __gnat_unsetenv (char *name) {
+#if defined (VMS)
+  /* Not implemented */
+  return;
+#elif defined (__hpux__) || defined (sun) \
+     || (defined (__mips) && defined (__sgi)) \
+     || (defined (__vxworks) && ! defined (__RTP__)) \
+     || defined (_AIX)
+
+  /* On Solaris, HP-UX and IRIX there is no function to clear an environment
+     variable. So we look for the variable in the environ table and delete it
+     by setting the entry to NULL. This can clearly cause some memory leaks
+     but free cannot be used on this context as not all strings in the environ
+     have been allocated using malloc. To avoid this memory leak another
+     method can be used. It consists in forcing the reallocation of all the
+     strings in the environ table using malloc on the first call on the
+     functions related to environment variable management. The disavantage
+     is that if a program makes a direct call to getenv the return string
+     may be deallocated at some point. */
+  /* Note that on AIX, unsetenv is not supported on 5.1 but it is on 5.3.
+     As we are still supporting AIX 5.1 we cannot use unsetenv */
+  char **env = __gnat_environ ();
+  int index = 0;
+  int size = strlen (name);
+
+  while (env[index] != NULL) {
+     if (strlen (env[index]) > size) {
+       if (strstr (env[index], name) == env[index] &&
+	   env[index][size] == '=') {
+#if defined (__vxworks) && ! defined (__RTP__)
+         /* on Vxworks we are sure that the string has been allocated using
+            malloc */
+         free (env[index]);
+#endif
+         while (env[index] != NULL) {
+          env[index]=env[index + 1];
+          index++;
+         }
+       } else
+           index++;
+     } else
+         index++;
+  }
+#elif defined (__MINGW32__)
+  /* On Windows platform putenv ("key=") is equivalent to unsetenv (a
+     subsequent call to getenv ("key") will return NULL and not the "\0"
+     string */
+  int size = strlen (name) + 2;
+  char *expression;
+  expression = (char *) xmalloc (size * sizeof (char));
+
+  sprintf (expression, "%s=", name);
+  putenv (expression);
+  free (expression);
+#else
+  unsetenv (name);
+#endif
+}
+
+void __gnat_clearenv (void) {
+#if defined (VMS)
+  /* not implemented */
+  return;
+#elif defined (sun) || (defined (__mips) && defined (__sgi)) \
+   || (defined (__vxworks) && ! defined (__RTP__)) || defined (__Lynx__)
+  /* On Solaris, IRIX, VxWorks (not RTPs), and Lynx there is no system
+     call to unset a variable or to clear the environment so set all
+     the entries in the environ table to NULL (see comment in
+     __gnat_unsetenv for more explanation). */
+  char **env = __gnat_environ ();
+  int index = 0;
+
+  while (env[index] != NULL) {
+    env[index]=NULL;
+    index++;
+  }
+#elif defined (__MINGW32__) || defined (__FreeBSD__) || defined (__APPLE__) \
+   || (defined (__vxworks) && defined (__RTP__))
+  /* On Windows, FreeBSD and MacOS there is no function to clean all the
+     environment but there is a "clean" way to unset a variable. So go
+     through the environ table and call __gnat_unsetenv on all entries */
+  char **env = __gnat_environ ();
+  int size;
+
+  while (env[0] != NULL) {
+    size = 0;
+    while (env[0][size] != '=')
+      size++;
+    /* create a string that contains "name" */
+    size++;
+    {
+      char expression[size];
+      strncpy (expression, env[0], size);
+      expression[size - 1] = 0;
+      __gnat_unsetenv (expression);
+    }
+  }
+#else
+  clearenv ();
+#endif
+}
diff --git a/gcc/ada/env.h b/gcc/ada/env.h
new file mode 100644
index 00000000000..c960e9f16ab
--- /dev/null
+++ b/gcc/ada/env.h
@@ -0,0 +1,6 @@
+extern void __gnat_getenv (char *name, int *len, char **value);
+extern void __gnat_setenv (char *name, char *value);
+extern char **__gnat_environ (void);
+extern void __gnat_unsetenv (char *name);
+extern void __gnat_clearenv (void);
+
diff --git a/gcc/ada/g-dirope.adb b/gcc/ada/g-dirope.adb
index dc6977596a5..5302969ac71 100644
--- a/gcc/ada/g-dirope.adb
+++ b/gcc/ada/g-dirope.adb
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---                     Copyright (C) 1998-2005, AdaCore                     --
+--                     Copyright (C) 1998-2006, AdaCore                     --
 --                                                                          --
 -- 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- --
@@ -33,7 +33,6 @@
 
 with Ada.Characters.Handling;
 with Ada.Strings.Fixed;
-with Ada.Strings.Maps;
 
 with Unchecked_Deallocation;
 with Unchecked_Conversion;
@@ -187,6 +186,9 @@ package body GNAT.Directory_Operations is
       Discard : Integer;
       pragma Warnings (Off, Discard);
 
+      function closedir (directory : DIRs) return Integer;
+      pragma Import (C, closedir, "__gnat_closedir");
+
    begin
       if not Is_Open (Dir) then
          raise Directory_Error;
@@ -625,6 +627,9 @@ package body GNAT.Directory_Operations is
      (Dir      : out Dir_Type;
       Dir_Name : Dir_Name_Str)
    is
+      function opendir (file_name : String) return DIRs;
+      pragma Import (C, opendir, "__gnat_opendir");
+
       C_File_Name : constant String := Dir_Name & ASCII.NUL;
 
    begin
@@ -647,7 +652,7 @@ package body GNAT.Directory_Operations is
       Last : out Natural)
    is
       Filename_Addr : Address;
-      Filename_Len  : Integer;
+      Filename_Len  : aliased Integer;
 
       Buffer : array (0 .. Filename_Max + 12) of Character;
       --  12 is the size of the dirent structure (see dirent.h), without the
@@ -655,27 +660,24 @@ package body GNAT.Directory_Operations is
 
       function readdir_gnat
         (Directory : System.Address;
-         Buffer    : System.Address) return System.Address;
+         Buffer    : System.Address;
+         Last      : access Integer) return System.Address;
       pragma Import (C, readdir_gnat, "__gnat_readdir");
 
-      function strlen (S : Address) return Integer;
-      pragma Import (C, strlen, "strlen");
-
    begin
       if not Is_Open (Dir) then
          raise Directory_Error;
       end if;
 
       Filename_Addr :=
-        readdir_gnat (System.Address (Dir.all), Buffer'Address);
+        readdir_gnat
+          (System.Address (Dir.all), Buffer'Address, Filename_Len'Access);
 
       if Filename_Addr = System.Null_Address then
          Last := 0;
          return;
       end if;
 
-      Filename_Len  := strlen (Filename_Addr);
-
       if Str'Length > Filename_Len then
          Last := Str'First + Filename_Len - 1;
       else
diff --git a/gcc/ada/g-os_lib.adb b/gcc/ada/g-os_lib.adb
index 46a21fdf750..dbfc6b91745 100644
--- a/gcc/ada/g-os_lib.adb
+++ b/gcc/ada/g-os_lib.adb
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---                     Copyright (C) 1995-2005, AdaCore                     --
+--                     Copyright (C) 1995-2006, AdaCore                     --
 --                                                                          --
 -- 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- --
@@ -609,11 +609,11 @@ package body GNAT.OS_Lib is
             C_Source : String (1 .. Source'Length + 1);
             C_Dest   : String (1 .. Dest'Length + 1);
          begin
-            C_Source (1 .. C_Source'Length) := Source;
-            C_Source (C_Source'Last)        := ASCII.Nul;
+            C_Source (1 .. Source'Length) := Source;
+            C_Source (C_Source'Last)      := ASCII.NUL;
 
-            C_Dest (1 .. C_Dest'Length) := Dest;
-            C_Dest (C_Dest'Last)        := ASCII.Nul;
+            C_Dest (1 .. Dest'Length) := Dest;
+            C_Dest (C_Dest'Last)      := ASCII.NUL;
 
             if Copy_Attributes (C_Source'Address, C_Dest'Address, 0) = -1 then
                Success := False;
@@ -1057,7 +1057,7 @@ package body GNAT.OS_Lib is
 
    function Getenv (Name : String) return String_Access is
       procedure Get_Env_Value_Ptr (Name, Length, Ptr : Address);
-      pragma Import (C, Get_Env_Value_Ptr, "__gnat_get_env_value_ptr");
+      pragma Import (C, Get_Env_Value_Ptr, "__gnat_getenv");
 
       procedure Strncpy (Astring_Addr, Cstring : Address; N : Integer);
       pragma Import (C, Strncpy, "strncpy");
@@ -1702,12 +1702,11 @@ package body GNAT.OS_Lib is
          --  Directory given, add directory separator if needed
 
          if Dir'Length > 0 then
-            if Dir (Dir'Length) = Directory_Separator then
+            if Dir (Dir'Last) = Directory_Separator then
                return Directory;
             else
                declare
                   Result : String (1 .. Dir'Length + 1);
-
                begin
                   Result (1 .. Dir'Length) := Dir;
                   Result (Result'Length) := Directory_Separator;
@@ -2313,7 +2312,7 @@ package body GNAT.OS_Lib is
       F_Value : String (1 .. Value'Length + 1);
 
       procedure Set_Env_Value (Name, Value : System.Address);
-      pragma Import (C, Set_Env_Value, "__gnat_set_env_value");
+      pragma Import (C, Set_Env_Value, "__gnat_setenv");
 
    begin
       F_Name (1 .. Name'Length) := Name;
diff --git a/gcc/ada/mingw32.h b/gcc/ada/mingw32.h
index 81bfc30d4a0..79d70d77790 100644
--- a/gcc/ada/mingw32.h
+++ b/gcc/ada/mingw32.h
@@ -6,7 +6,7 @@
  *                                                                          *
  *                              C Header File                               *
  *                                                                          *
- *          Copyright (C) 2002-2004, Free Software Foundation, Inc.         *
+ *          Copyright (C) 2002-2006, 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- *
@@ -36,6 +36,35 @@
 #ifndef _MINGW32_H
 #define _MINGW32_H
 
+
+
+/* Uncomment to activate the GNAT Unicode support. */
+/*#define GNAT_UNICODE_SUPPORT */
+
+#ifdef GNAT_UNICODE_SUPPORT
+#define _UNICODE /* For C runtime */
+#define UNICODE  /* For Win32 API */
+#endif
+
+#include <tchar.h>
+
+/* After including this file it is possible to use the character t as prefix
+   to routines. If GNAT_UNICODE_SUPPORT is defined then the unicode enabled
+   versions will be used. */
+
+/* Copy to/from wide-string, if GNAT_UNICODE_SUPPORT activated this will do
+   the proper translations using the UTF-8 encoding.  */
+
+#ifdef GNAT_UNICODE_SUPPORT
+#define S2WS(wstr,str,len) \
+   MultiByteToWideChar (CP_UTF8,0,str,-1,wstr,len);
+#define WS2S(str,wstr,len) \
+   WideCharToMultiByte (CP_UTF8,0,wstr,-1,str,len,NULL,NULL);
+#else
+#define S2WS(wstr,str,len) strncpy(wstr,str,len);
+#define WS2S(str,wstr,len) strncpy(str,wstr,len);
+#endif
+
 #include <stdlib.h>
 
 /* STD_MINGW: standard if MINGW32 version > 1.3, we have switched to this
diff --git a/gcc/ada/s-crtl-vms64.ads b/gcc/ada/s-crtl-vms64.ads
index f939ea0dd84..83292b70895 100644
--- a/gcc/ada/s-crtl-vms64.ads
+++ b/gcc/ada/s-crtl-vms64.ads
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                S p e c                                   --
 --                                                                          --
---         Copyright (C) 2004-2005 Free Software Foundation, Inc.           --
+--         Copyright (C) 2004-2006, 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- --
@@ -63,9 +63,6 @@ package System.CRTL is
    procedure clearerr (stream : FILEs);
    pragma Import (C, clearerr, "decc$clearerr");
 
-   function closedir (directory : DIRs) return Integer;
-   pragma Import (C, closedir, "decc$closedir");
-
    function dup  (handle : int) return int;
    pragma Import (C, dup, "decc$dup");
 
@@ -137,9 +134,6 @@ package System.CRTL is
    procedure mktemp (template : chars);
    pragma Import (C, mktemp, "decc$_mktemp64");
 
-   function opendir (file_name : String) return DIRs;
-   pragma Import (C, opendir, "decc$opendir");
-
    function pclose (stream : System.Address) return int;
    pragma Import (C, pclose, "decc$pclose");
 
diff --git a/gcc/ada/s-crtl.ads b/gcc/ada/s-crtl.ads
index 19d74c8b594..7ce99bcb1e0 100644
--- a/gcc/ada/s-crtl.ads
+++ b/gcc/ada/s-crtl.ads
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 S p e c                                  --
 --                                                                          --
---          Copyright (C) 2003-2005 Free Software Foundation, Inc.          --
+--          Copyright (C) 2003-2006, 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- --
@@ -63,9 +63,6 @@ package System.CRTL is
    procedure clearerr (stream : FILEs);
    pragma Import (C, clearerr, "clearerr");
 
-   function closedir (directory : DIRs) return Integer;
-   pragma Import (C, closedir, "closedir");
-
    function dup  (handle : int) return int;
    pragma Import (C, dup, "dup");
 
@@ -137,9 +134,6 @@ package System.CRTL is
    procedure mktemp (template : chars);
    pragma Import (C, mktemp, "mktemp");
 
-   function opendir (file_name : String) return DIRs;
-   pragma Import (C, opendir, "opendir");
-
    function pclose (stream : System.Address) return int;
    pragma Import (C, pclose, "pclose");
 
diff --git a/gcc/ada/s-scaval.adb b/gcc/ada/s-scaval.adb
index 71b5c6017a5..c0ad1e10c30 100644
--- a/gcc/ada/s-scaval.adb
+++ b/gcc/ada/s-scaval.adb
@@ -44,7 +44,7 @@ package body System.Scalar_Values is
       C2 : Character := Mode2;
 
       procedure Get_Env_Value_Ptr (Name, Length, Ptr : Address);
-      pragma Import (C, Get_Env_Value_Ptr, "__gnat_get_env_value_ptr");
+      pragma Import (C, Get_Env_Value_Ptr, "__gnat_getenv");
 
       subtype String2 is String (1 .. 2);
       type String2_Ptr is access all String2;
diff --git a/gcc/ada/s-shasto.adb b/gcc/ada/s-shasto.adb
index 6d90dcf20ce..5d8e11f9e71 100644
--- a/gcc/ada/s-shasto.adb
+++ b/gcc/ada/s-shasto.adb
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 1998-2002 Free Software Foundation, Inc.          --
+--          Copyright (C) 1998-2006, 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- --
@@ -34,7 +34,6 @@
 with Ada.Exceptions;
 with Ada.IO_Exceptions;
 with Ada.Streams;
-with Ada.Streams.Stream_IO;
 
 with System.Global_Locks;
 with System.Soft_Links;
@@ -86,7 +85,7 @@ package body System.Shared_Storage is
 
    procedure Write
      (Stream : in out File_Stream_Type;
-      Item   : in AS.Stream_Element_Array);
+      Item   : AS.Stream_Element_Array);
 
    subtype Hash_Header is Natural range 0 .. 30;
    --  Number of hash headers, related (for efficiency purposes only)
@@ -249,7 +248,7 @@ package body System.Shared_Storage is
 
    procedure Initialize is
       procedure Get_Env_Value_Ptr (Name, Length, Ptr : Address);
-      pragma Import (C, Get_Env_Value_Ptr, "__gnat_get_env_value_ptr");
+      pragma Import (C, Get_Env_Value_Ptr, "__gnat_getenv");
 
       procedure Strncpy (Astring_Addr, Cstring : Address; N : Integer);
       pragma Import (C, Strncpy, "strncpy");
@@ -331,7 +330,7 @@ package body System.Shared_Storage is
    -- Shared_Var_Close --
    ----------------------
 
-   procedure Shared_Var_Close (Var : in SIO.Stream_Access) is
+   procedure Shared_Var_Close (Var : SIO.Stream_Access) is
       pragma Warnings (Off, Var);
 
    begin
@@ -342,7 +341,7 @@ package body System.Shared_Storage is
    -- Shared_Var_Lock --
    ---------------------
 
-   procedure Shared_Var_Lock (Var : in String) is
+   procedure Shared_Var_Lock (Var : String) is
       pragma Warnings (Off, Var);
 
    begin
@@ -429,7 +428,7 @@ package body System.Shared_Storage is
    -- Shared_Var_Unlock --
    -----------------------
 
-   procedure Shared_Var_Unlock (Var : in String) is
+   procedure Shared_Var_Unlock (Var : String) is
       pragma Warnings (Off, Var);
 
    begin
@@ -522,7 +521,7 @@ package body System.Shared_Storage is
 
    procedure Write
      (Stream : in out File_Stream_Type;
-      Item   : in AS.Stream_Element_Array)
+      Item   : AS.Stream_Element_Array)
    is
    begin
       SIO.Write (Stream.File, Item);