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Fix gdb.ada/vla.exp

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PR ada/24539 concerns a test failure in gdb.ada/vla.exp.

The problem here is that different versions of Gnat emit the
structure's fields in different orders -- with the order currently
failing actually being the correct one.

Joel pointed out that this can be fixed by simply adding the
No_Component_Reordering pragma to the type in question, which is what
this patch does.

I've reported a Gnat compiler bug internally in hopes of getting the
underlying problem fixed.

gdb/testsuite/ChangeLog
2019-06-14  Tom Tromey  <tromey@adacore.com>

	PR ada/24539:
	* gdb.ada/vla.exp: Update tests.
	* gdb.ada/vla/vla.adb (Record_Type): Use No_Component_Reordering
	pragma.
This commit is contained in:
Tom Tromey
2019-05-29 10:21:52 -06:00
parent e30d1fa1bf
commit 9a9e394b05
3 changed files with 16 additions and 4 deletions
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7
gdb/testsuite/ChangeLog
View File

@ -1,3 +1,10 @@
2019-06-14 Tom Tromey <tromey@adacore.com>
PR ada/24539:
* gdb.ada/vla.exp: Update tests.
* gdb.ada/vla/vla.adb (Record_Type): Use No_Component_Reordering
pragma.
2019-06-13 Pedro Alves <palves@redhat.com>
* gdb.base/settings.exp (test-integer): Test junk after

8
gdb/testsuite/gdb.ada/vla.exp
View File

@ -29,10 +29,10 @@ set bp_location [gdb_get_line_number "Set breakpoint here" ${testdir}/vla.adb]
runto "vla.adb:$bp_location"
gdb_test "print r00" \
"= \\(l1 => 0, l2 => 0, i1 => 1, i2 => 2, i3 => 3, a1 => \\(\\), a2 => \\(\\)\\)"
"= \\(l1 => 0, l2 => 0, i1 => 1, a1 => \\(\\), i2 => 2, a2 => \\(\\), i3 => 3\\)"
gdb_test "print r01" \
"= \\(l1 => 0, l2 => 1, i1 => 1, i2 => 2, i3 => 3, a1 => \\(\\), a2 => \\(20\\)\\)"
"= \\(l1 => 0, l2 => 1, i1 => 1, a1 => \\(\\), i2 => 2, a2 => \\(20\\), i3 => 3\\)"
gdb_test "print r10" \
"= \\(l1 => 1, l2 => 0, i1 => 1, i2 => 2, i3 => 3, a1 => \\(10\\), a2 => \\(\\)\\)"
"= \\(l1 => 1, l2 => 0, i1 => 1, a1 => \\(10\\), i2 => 2, a2 => \\(\\), i3 => 3\\)"
gdb_test "print r22" \
"= \\(l1 => 2, l2 => 2, i1 => 1, i2 => 2, i3 => 3, a1 => \\(10, 10\\), a2 => \\(20, 20\\)\\)"
"= \\(l1 => 2, l2 => 2, i1 => 1, a1 => \\(10, 10\\), i2 => 2, a2 => \\(20, 20\\), i3 => 3\\)"

5
gdb/testsuite/gdb.ada/vla/vla.adb
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@ -23,6 +23,11 @@ procedure Vla is
I3 : Integer;
end record;
-- Some versions of GCC emit the members in the incorrect order.
-- Since this isn't relevant to the bug at hand, disable
-- reordering to get consistent results.
pragma No_Component_Reordering (Record_Type);
procedure Process (R : Record_Type) is
begin
null;