[Bug ada/21489] New: Wrong code generated with -O -fPIC

[ludovic dot brenta at insalien dot org]

(From the Debian BTS):

-- fails in 3.15p, 3.4, and 4.0
-- RM 6.4.1(13)
-- RM 9.5.1(3)
-- RM 9.5.3(8)
with text_io; use text_io;
procedure Test_306834 is
   type intp is access all integer;
   i: aliased integer := 3;
   x1: intp;

   procedure p1(x: out intp) is
   begin
      null;
   end;

   protected type T1 is
      entry e1 (x: out intp);
      procedure p2(x: out intp);
   end T1;

    protected body T1 is

      entry e1 (x: out intp) when true is
      begin
         null;
      end e1;

      procedure p2(x: out intp) is
      begin
         null;
      end;

   end T1;

   task type T2 is
      entry e1 (x: out intp);
   end T2;

   task body T2 is
   begin
      for i in 1..2 loop
         accept e1 (x: out intp) do
            begin
               null;
            end;
         end e1;
      end loop;
   end T2;

   pt: T1;

   tt: T2;

   procedure doit(x2: intp) is

      procedure check is
      begin
         if x1 = x2
           then put_line("PASSED");
           else put_line("FAILED");
         end if;
         x1 := x2;
      end;

   begin
      x1 := x2;
      p1(x1);
      check;
      pt.p2(x1);
      check;
      pt.e1(x1);
      check;
      tt.e1(x1);
      check;
   end;
begin
   doit(null);
   doit(i'access);
end Test_306834;


The program should print "PASSED" 8 times, but instead prints "PASSED" 6 times
and then "FAILED" two times.

-- 
Ludovic Brenta.

-- 
           Summary: Wrong code generated with -O -fPIC
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ada
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ludovic dot brenta at insalien dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21489