[Bug c++/12272] New: Doesn't find namespace

[Bug c++/12272] New: Doesn't find namespace

[igodard at pacbell dot net]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12272

           Summary: Doesn't find namespace
           Product: gcc
           Version: 3.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: igodard at pacbell dot net
                CC: gcc-bugs at gcc dot gnu dot org

[Bug c++/12272] Doesn't find namespace

[igodard at pacbell dot net]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12272



------- Additional Comments From igodard at pacbell dot net  2003-09-14 02:08 -------
Created an attachment (id=4753)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4753&action=view)
Compiler output (-v -save-temps)

[Bug c++/12272] Doesn't find namespace

[igodard at pacbell dot net]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12272



------- Additional Comments From igodard at pacbell dot net  2003-09-14 02:10 -------
Created an attachment (id=4754)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4754&action=view)
Source code (-save-temps)

[Bug c++/12272] Doesn't find namespace

[pinskia at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12272



------- Additional Comments From pinskia at gcc dot gnu dot org  2003-09-14 04:03 -------
A work around is to add :: in front of Hide in those two lines.
I tried to reduce it but it was hard.
Also note not all the code is standard compliant and cannot compile on 3.4, I had to add 
template<> in front of specifications.

[Bug c++/12272] using declaration shadows namespace

[bangerth at dealii dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12272


bangerth at dealii dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Doesn't find namespace      |using declaration shadows
                   |                            |namespace


------- Additional Comments From bangerth at dealii dot org  2003-09-15 00:13 -------
Here's a cut-down testcase: 
---------------------------------------------- 
namespace NS1 { 
  namespace NS2 { 
  }; 
} 
namespace NS2 { 
  class X; 
} 
using namespace NS1; 
 
typedef NS2::X Y; 
-------------------------------- 
 
It fails like so with 3.3: 
tmp/g> ~/bin/gcc-3.3/bin/c++ -c x.cc 
x.cc:10: error: syntax error before `::' token 
 
I think it should pass. I'm at a machine where I don't have my compiler collection, so 
I can't say whether this is a regression or what. 
 
W.

[Bug c++/12272] using declaration shadows namespace

[pinskia at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12272



------- Additional Comments From pinskia at gcc dot gnu dot org  2003-09-15 00:23 -------
With ICC 6.0, I get an error:
pr12272.cc
pr12272.cc(10): error: "NS2" is ambiguous
  typedef NS2::X Y; 
          ^

compilation aborted for pr12272.cc (code 2)

[Bug c++/12272] using declaration shadows namespace

[gdr at integrable-solutions dot net]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12272



------- Additional Comments From gdr at integrable-solutions dot net  2003-09-15 01:39 -------
Subject: Re:  using declaration shadows namespace

"bangerth at dealii dot org" <gcc-bugzilla@gcc.gnu.org> writes:

| Here's a cut-down testcase: 
| ---------------------------------------------- 
| namespace NS1 { 
|   namespace NS2 { 
|   }; 
| } 
| namespace NS2 { 
|   class X; 
| } 
| using namespace NS1; 
|  
| typedef NS2::X Y; 
          ^^^

"NS2" is ambiguous:  NS1::NS2 or ::NS2? 


| -------------------------------- 
|  
| It fails like so with 3.3: 
| tmp/g> ~/bin/gcc-3.3/bin/c++ -c x.cc 
| x.cc:10: error: syntax error before `::' token 

bogus diagnostic message.

| I think it should pass.

No, it should not.  But the diagnostic message is close to useless.

-- Gaby

[Bug c++/12272] wrong error message using declaration shadows namespace

[pinskia at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12272


pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
           Keywords|                            |diagnostic
   Last reconfirmed|0000-00-00 00:00:00         |2003-09-15 01:45:34
               date|                            |
            Summary|using declaration shadows   |wrong error message using
                   |namespace                   |declaration shadows
                   |                            |namespace


------- Additional Comments From pinskia at gcc dot gnu dot org  2003-09-15 01:45 -------
The mainline is even worse because NS2 is definitely a namespace:
pr12272.cc:10: error: `NS2' is not a class-name or namespace-name
pr12272.cc:10: error: expected init-declarator
pr12272.cc:10: error: expected `,' or `;'

[Bug c++/12272] wrong error message using declaration shadows namespace

[gdr at integrable-solutions dot net]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12272



------- Additional Comments From gdr at integrable-solutions dot net  2003-09-15 01:50 -------
Subject: Re:  wrong error message using declaration shadows namespace

"pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> writes:

| The mainline is even worse because NS2 is definitely a namespace:
| pr12272.cc:10: error: `NS2' is not a class-name or namespace-name

Arrgh.  The cc1plus is horrifying ;-)

-- Gaby

[Bug c++/12272] wrong error message using declaration shadows namespace

[bangerth at dealii dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12272



------- Additional Comments From bangerth at dealii dot org  2003-09-15 14:04 -------
Thinking about it, y'all are right, of course, the code should
be invalid. One shouldn't do things in a hurry (but at least
we now have a small testcase).

W.

[Bug c++/12272] wrong error message using declaration shadows namespace

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2003-12-28 23:08 -------
Now I get this error which is not better.
pr12272.cc:10: error: `NS2' has not been declared
pr12272.cc:10: error: expected init-declarator before "Y"
pr12272.cc:10: error: expected `,' or `;' before "Y"

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2003-12-06 08:25:24         |2003-12-28 23:08:00
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12272

[Bug c++/12272] wrong error message using declaration shadows namespace

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-06-01 15:19 -------
An almost dup of bug 100.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
  BugsThisDependsOn|                            |100


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12272

[Bug c++/12272] wrong error message using declaration shadows namespace

[bangerth at dealii dot org]

-- 
Bug 12272 depends on bug 100, which changed state.

Bug 100 Summary: confusing name lookup diagnostic
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=100

           What    |Old Value                   |New Value
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12272

[Bug c++/12272] wrong error message using declaration shadows namespace

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-09-23 13:22 -------
*** Bug 23967 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jens dot maurer at gmx dot
                   |                            |net


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12272