From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-349499-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 7039 invoked by alias); 9 Mar 2011 09:19:06 -0000
Received: (qmail 7028 invoked by uid 22791); 9 Mar 2011 09:19:05 -0000
X-SWARE-Spam-Status: No, hits=-2.8 required=5.0	tests=ALL_TRUSTED,AWL,BAYES_00
X-Spam-Check-By: sourceware.org
Received: from localhost (HELO gcc.gnu.org) (127.0.0.1)    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Wed, 09 Mar 2011 09:19:00 +0000
From: "demoonlit at panathenaia dot halfmoon.jp" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ada/48039] New: Legal program rejected, a formal function is not visible in generic
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: ada
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: demoonlit at panathenaia dot halfmoon.jp
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Changed-Fields:
Message-ID: <bug-48039-4@http.gcc.gnu.org/bugzilla/>
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
Content-Type: text/plain; charset="UTF-8"
MIME-Version: 1.0
Date: Wed, 09 Mar 2011 09:19:00 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
X-SW-Source: 2011-03/txt/msg00812.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48039

           Summary: Legal program rejected, a formal function is not
                    visible in generic
           Product: gcc
           Version: 4.5.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ada
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: demoonlit@panathenaia.halfmoon.jp


Created attachment 23589
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23589
minimal bug triggering source code

Name lookup is abnormal in complex generic code with gcc-4.5.1/4.5.2.

-- p.ads
package p is
end p;

-- p-gh.ads
generic
function p.gh return Integer;

-- p-gh.adb
function p.gh return Integer is
begin
   return 0;
end p.gh;

-- p-gu.ads
generic
package p.gu is
   generic
      with function h return Integer is <>;
      -- with function fh return Integer is <>; -- ok
   function gh return Integer;
end p.gu;

-- p-gu.adb
package body p.gu is
   function gh return Integer is
   begin
      return h; -- error !!
      -- return fh; -- ok
   end gh;
end p.gu;

-- p-h.ads
with p.gh;
function p.h is new gh;

-- p-u.ads
with p.gu;
package p.u is new gu;

-- p-r.ads
with p.u;
package p.r is
end p.r;

-- p-r-h.ads
with p.h;
function p.r.h is new u.gh (h);

% gnatmake p-r-h.ads 
gcc -c p-r-h.ads
p-r-h.ads:4:01: instantiation error at p-gu.adb:6
p-r-h.ads:4:01: "h" is not visible
p-r-h.ads:4:01: instantiation error at p-gu.adb:6
p-r-h.ads:4:01: non-visible declaration at line 4
p-r-h.ads:4:01: instantiation error at p-gu.adb:6
p-r-h.ads:4:01: non-visible declaration at p-h.ads:4
gnatmake: "p-r-h.ads" compilation error

This code will be compiled If we rename formal function h to another name (for
example, fh).