old-cross-binutils/gdb/testsuite/gdb.ada/optim_drec/foo.adb

--  Copyright 2012-2014 Free Software Foundation, Inc.
--
--  This program is free software; you can redistribute it and/or modify
--  it under the terms of the GNU General Public License as published by
--  the Free Software Foundation; either version 3 of the License, or
--  (at your option) any later version.
--
--  This program is distributed in the hope that it will be useful,
--  but WITHOUT 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
--  along with this program.  If not, see <http://www.gnu.org/licenses/>.

procedure Foo is
   type Discriminants_Record (A : Integer; B : Boolean) is record
      C : Float;
   end record;
   --  The following variable is unused on purpose, and might be
   --  optimized out by the compiler.
   Z : Discriminants_Record := (A => 1, B => False, C => 2.0);
begin
   null;
end Foo;
Update Copyright year range in all files maintained by GDB. 2014-01-01 03:54:24 +00:00			`-- Copyright 2012-2014 Free Software Foundation, Inc.`
crash printing optimized out variant type Assuming the following declarations: type Discriminants_Record (A : Integer; B : Boolean) is record C : Float; end record; Z : Discriminants_Record := (A => 1, B => False, C => 2.0); If variable Z is not used, and the compiler optimizes it out, GDB would crash as follow: (gdb) print Z /[...]/gdb/valops.c:1121: internal-error: Unexpected lazy value type. This is because the ada-lang module forgot to set the optimized_out flag in the value returned by ada_evaluate_subexp during the value's "fixing" process. Later on, when trying to print the resulting value, GDB finds that the value is still lazily allocated, and thus tries to fetch it. But this is not allowed for not_lval values, hence the internal error. gdb/ChangeLog: * ada-lang.c (coerce_unspec_val_to_type): Make sure that the optimized_out flag is preserved. gdb/testsuite/ChangeLog: * gdb.ada/optim_drec: New testcase. 2012-09-10 22:18:24 +00:00			`--`
			`-- This program is free software; you can redistribute it and/or modify`
			`-- it under the terms of the GNU General Public License as published by`
			`-- the Free Software Foundation; either version 3 of the License, or`
			`-- (at your option) any later version.`
			`--`
			`-- This program is distributed in the hope that it will be useful,`
			`-- but WITHOUT 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`
			`-- along with this program. If not, see <http://www.gnu.org/licenses/>.`

			`procedure Foo is`
			`type Discriminants_Record (A : Integer; B : Boolean) is record`
			`C : Float;`
			`end record;`
			`-- The following variable is unused on purpose, and might be`
			`-- optimized out by the compiler.`
			`Z : Discriminants_Record := (A => 1, B => False, C => 2.0);`
			`begin`
			`null;`
			`end Foo;`