[Bug c++/11507] New: parser fails to recognize namespace; regression to 3.3

[Bug c++/11507] New: parser fails to recognize namespace; regression to 3.3

[kai-gcc-bugs at khms dot westfalen dot de]

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11507

           Summary: parser fails to recognize namespace; regression to 3.3
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: kai-gcc-bugs at khms dot westfalen dot de
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu

This fails both on HEAD and on tree-ssa, but works on this version:

Reading specs from /usr/lib/gcc-lib/i386-linux/3.3.1/specs
Konfiguriert mit: ../src/configure -v
--enable-languages=c,c++,java,f77,pascal,objc,ada,treelang --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--with-gxx-include-dir=/usr/include/c++/3.3 --enable-shared --with-system-zlib
--enable-nls --without-included-gettext --enable-__cxa_atexit
--enable-clocale=gnu --enable-debug --enable-java-gc=boehm
--enable-java-awt=xlib --enable-objc-gc i386-linux
Thread model: posix
gcc-Version 3.3.1 20030626 (Debian prerelease)

[Bug c++/11507] parser fails to recognize namespace; regression to 3.3

[kai-gcc-bugs at khms dot westfalen dot de]

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11507



------- Additional Comments From kai-gcc-bugs at khms dot westfalen dot de  2003-07-12 16:14 -------
Created an attachment (id=4393)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4393&action=view)
error output with HEAD

[Bug c++/11507] parser fails to recognize namespace; regression to 3.3

[kai-gcc-bugs at khms dot westfalen dot de]

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11507



------- Additional Comments From kai-gcc-bugs at khms dot westfalen dot de  2003-07-12 16:15 -------
Created an attachment (id=4394)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4394&action=view)
also happens with this version of tree-ssa

[Bug c++/11507] parser fails to recognize namespace; regression to 3.3

[kai-gcc-bugs at khms dot westfalen dot de]

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11507



------- Additional Comments From kai-gcc-bugs at khms dot westfalen dot de  2003-07-12 16:17 -------
Created an attachment (id=4395)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4395&action=view)
input (.ii)

[Bug c++/11507] parser fails to recognize namespace; regression to 3.3

[kai-gcc-bugs at khms dot westfalen dot de]

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11507



------- Additional Comments From kai-gcc-bugs at khms dot westfalen dot de  2003-07-12 16:25 -------
Created an attachment (id=4396)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4396&action=view)
Just in case it matters: diff to .ii from 3.3.1

[Bug c++/11507] parser fails to recognize namespace; regression to 3.3

[kai-gcc-bugs at khms dot westfalen dot de]

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11507



------- Additional Comments From kai-gcc-bugs at khms dot westfalen dot de  2003-07-12 18:27 -------
Just in case you're curious what on earth this is trying to do:

It's a C++ wrapper for curses, which tries to be namespace clean by first
importing all the definitions into a special encapsulation namespace, then
(essentially) using the .ii file generated from this as a header file and
implementing another final encapsulation.

Very approximately, and with some detail left out,

namespace n1 {
#include ...
encap_function() { return function(); }
}

#include "previous.ii"
namespace n2 {
function() { n1::encap_function(); }
}

In the end, inlining should leave just the bare references to the C library
functions. So far, this seems to work perfectly (except for this bug, when I
wanted to see some C-syntax tree dumps, and know if there were bugs the old
parser didn't catch, and tried HEAD and tree-ssa on my source.)

[Bug c++/11507] [3.4 regression]parser fails to recognize namespace; regression to 3.3

[neroden 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=11507


neroden at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid
            Summary|parser fails to recognize   |[3.4 regression]parser fails
                   |namespace; regression to 3.3|to recognize namespace;
                   |                            |regression to 3.3


------- Additional Comments From neroden at gcc dot gnu dot org  2003-07-12 19:29 -------
tagging, but I'm not actually sure whether it's legal code or not, as usual with C++, so not confirming.

[Bug c++/11507] [3.4 regression]parser fails to recognize namespace; regression to 3.3

[pinskia at physics dot uc dot edu]

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11507



------- Additional Comments From pinskia at physics dot uc dot edu  2003-07-12 20:29 -------
I do not think what you are doing is valid as if the headers include standard c++ headers 
(really the deprecated ones from the C standard which define stuff in the namespace std 
and have "using namespace ::std;") then the some of the namespace std is inside the 
wrong namespace.

[Bug c++/11507] [3.4 regression] parser fails to recognize 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=11507


bangerth at dealii dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-07-12 23:41:20
               date|                            |
            Summary|[3.4 regression]parser fails|[3.4 regression] parser
                   |to recognize namespace;     |fails to recognize namespace
                   |regression to 3.3           |


------- Additional Comments From bangerth at dealii dot org  2003-07-12 23:41 -------
I don't think you technique is something I would recommend, but there is still
a bug in gcc :-)

Here's a cut-down testcase:
------------------------
namespace NS
{
  void foo(bool arg1);
}

namespace M {
  namespace K {
    bool Bc(bool x);
  }

  void bar() {
    NS::foo (K::Bc(true));
  };
}
--------------------------
This is used to compile with 3.3, but now fails like so:

tmp/gg> ../build-gcc/gcc-install/bin/c++ -c x.cc
x.cc: In function `void M::bar()':
x.cc:12: error: `K' is not a class-name or namespace-name
x.cc:12: error: `Bc' undeclared (first use this function)
x.cc:12: error: (Each undeclared identifier is reported only once for each
   function it appears in.)

I think gcc is wrong. icc agress with me.

W.

[Bug c++/11507] [3.4 regression] parser fails to recognize namespace

[pinskia at physics dot uc dot edu]

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11507



------- Additional Comments From pinskia at physics dot uc dot edu  2003-07-15 14:59 -------
Using the small testcase and Phil's regression hunter (2002-12-27-trunk (#177) and 
2002-12-28-trunk (#178)), this looks like it was introduced with the new parser.

[Bug c++/11507] [3.4 regression] parser fails to recognize namespace

[pinskia at physics dot uc dot edu]

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11507


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


------- Additional Comments From pinskia at physics dot uc dot edu  2003-07-18 01:25 -------
Fixed on the mainline (20030717).  I will submit a test case.

[Bug c++/11507] [3.4 regression] parser fails to recognize namespace

[cvs-commit 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=11507



------- Additional Comments From cvs-commit at gcc dot gnu dot org  2003-09-07 03:43 -------
Subject: Bug 11507

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	pinskia@gcc.gnu.org	2003-09-07 03:43:15

Added files:
	gcc/testsuite/g++.dg/lookup: scoped7.C 
	gcc/testsuite/g++.dg/other: static1.C 
	gcc/testsuite/g++.dg/warn: template-1.C 
	gcc/testsuite/g++.dg/template: crash10.C call1.C 
	gcc/testsuite/g++.dg/overload: VLA.C 

Log message:
	2003-09-06  Andrew Pinski  <pinskia@physics.uc.edu>
	
	PR c++/11507
	* g++.dg/lookup/scoped7.C: New test.
	
	PR c++/9574
	* g++.dg/other/static1.C: New test.
	
	PR c++/11490
	* g++.dg/warn/template-1.C: New test.
	
	PR c++/11432
	* g++.dg/template/crash10.C: New test.
	
	PR c++/2478
	* g++.dg/overload/VLA.C: New test.
	
	PR c++/10804
	* g++.dg/template/call1.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/lookup/scoped7.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/other/static1.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/warn/template-1.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/crash10.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/call1.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/overload/VLA.C.diff?cvsroot=gcc&r1=NONE&r2=1.1