[Bug c++/17068] New: ICE: tree check: expected class 'd', have 'x' (identifier_node) in dependent_template_p, at cp/pt.c:12043

[Bug c++/17068] New: ICE: tree check: expected class 'd', have 'x' (identifier_node) in dependent_template_p, at cp/pt.c:12043

[v dot haisman at sh dot cvut dot cz]

Compiling the following testcase GCC ICEs with the error bellow.
The test case is derived from one configure test of libsigc++2.x.

struct Thing
{
  template <class T>
  void operator()(T a, T b)
  { }
};

template<class T2>
struct OtherThing
{
  void do_something()
  {
    Thing thing_;
    thing_.template operator()<T2>(1, 2);
  }
};

wilx@logout:::~/tmp> g++ -c libsigc++-test.cxx
libsigc++-test.cxx: In member function `void OtherThing<T2>::do_something()':
libsigc++-test.cxx:14: internal compiler error: tree check: expected class 'd',
have 'x' (identifier_node) in dependent_template_p, at cp/pt.c:12043
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

-- 
           Summary: ICE: tree check: expected class 'd', have 'x'
                    (identifier_node) in dependent_template_p, at
                    cp/pt.c:12043
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: v dot haisman at sh dot cvut dot cz
                CC: gcc-bugs at gcc dot gnu dot org,v dot haisman at sh dot
                    cvut dot cz
 GCC build triplet: i386-unknown-freebsd4.10
  GCC host triplet: i386-unknown-freebsd4.10
GCC target triplet: i386-unknown-freebsd4.10


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17068

[Bug c++/17068] [3.4/3.5 regression] ICE: tree check: expected class 'd', have 'x' (identifier_node) in dependent_template_p, at cp/pt.c:12043

[reichelt at gcc dot gnu dot org]

------- Additional Comments From reichelt at gcc dot gnu dot org  2004-08-17 19:55 -------
Confirmed. Here's a reduced code snippet:

=============================================
struct A
{
    template<int> void operator()() {}
};

template<typename> void foo()
{
    A().template operator()<0>();
}
=============================================


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |reichelt at gcc dot gnu dot
                   |                            |org
           Severity|normal                      |critical
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
  GCC build triplet|i386-unknown-freebsd4.10    |
   GCC host triplet|i386-unknown-freebsd4.10    |
 GCC target triplet|i386-unknown-freebsd4.10    |
           Keywords|                            |ice-on-valid-code, monitored
      Known to fail|                            |3.4.0 3.4.1 3.5.0
      Known to work|                            |3.3.4
   Last reconfirmed|0000-00-00 00:00:00         |2004-08-17 19:55:10
               date|                            |
            Summary|ICE: tree check: expected   |[3.4/3.5 regression] ICE:
                   |class 'd', have 'x'         |tree check: expected class
                   |(identifier_node) in        |'d', have 'x'
                   |dependent_template_p, at    |(identifier_node) in
                   |cp/pt.c:12043               |dependent_template_p, at
                   |                            |cp/pt.c:12043
   Target Milestone|---                         |3.4.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17068

[Bug c++/17068] [3.4/3.5 regression] ICE: tree check: expected class 'd', have 'x' (identifier_node) in dependent_template_p, at cp/pt.c:12043

[bangerth at dealii dot org]

------- Additional Comments From bangerth at dealii dot org  2004-08-17 20:15 -------
Well done, Volker: this intriguing anagramatic sequence in your testcase 
  ()<0>() 
clearly asks for an award for "art in testcases" :-) 
 
W. 

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17068

[Bug c++/17068] [3.4/3.5 regression] ICE: tree check: expected class 'd', have 'x' (identifier_node) in dependent_template_p, at cp/pt.c:12043

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-08-17 20:23 -------
: Search converges between 2003-07-08-trunk (#288) and 2003-07-09-trunk (#289).

I almost think it was caused by:
2003-07-08  Mark Mitchell  <mark@codesourcery.com>

        * cp-tree.def (NON_DEPENDENT_EXPR): New node.
        * cp-tree.h (build_call_from_tree): Remove.
        (build_member_call): Likewise.
        ...., etc.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mark at codesourcery dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17068

[Bug c++/17068] [3.4/3.5 regression] ICE: tree check: expected class 'd', have 'x' (identifier_node) in dependent_template_p, at cp/pt.c:12043

[reichelt at gcc dot gnu dot org]

------- Additional Comments From reichelt at gcc dot gnu dot org  2004-08-17 21:11 -------
> ------- Additional Comments From bangerth at dealii dot org  2004-08-17 20:15
-------
> Well done, Volker: this intriguing anagramatic sequence in your testcase 
>   ()<0>() 
> clearly asks for an award for "art in testcases" :-) 

Well, I couldn't help it - I had to find a really symmetric testcase. :-)
And here it is (it's a modified version from PR 16971). You can read
it forwards and backwards (well, you have to revert the braces):

=============================================
namespace { ; int tni ; int tni ; } ecapseman
=============================================

The error message mainline used to give was:

:1:C.C:1: error: redefinition of `int <unnamed>::tni'
:1:C.C:1: error: `int <unnamed>::tni' previously declared here
:1:C.C:1: internal compiler error: tree check: expected class 'd', have 'x'
(error_mark) in cp_parser_init_declarator, at cp/parser.c:10717
Please submit a full bug report, [etc.]


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17068

[Bug c++/17068] [3.4/3.5 regression] ICE: tree check: expected class 'd', have 'x' (identifier_node) in dependent_template_p, at cp/pt.c:12043

[bangerth at dealii dot org]

------- Additional Comments From bangerth at dealii dot org  2004-08-17 21:44 -------
Extremely cool. Also the choice of filename is very innovative. 
 
I'm almost thinking we should have a metabug for cases like this. In 
the spirit of PR 5 :-) 

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17068

[Bug c++/17068] [3.4/3.5 regression] ICE: tree check: expected class 'd', have 'x' (identifier_node) in dependent_template_p, at cp/pt.c:12043

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-08-18 03:28 -------
Working on a fix.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |mark at codesourcery dot com
                   |dot org                     |
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17068

[Bug c++/17068] [3.4/3.5 regression] ICE: tree check: expected class 'd', have 'x' (identifier_node) in dependent_template_p, at cp/pt.c:12043

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-08-18 18:25 -------
Subject: Bug 17068

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	mmitchel@gcc.gnu.org	2004-08-18 18:25:10

Modified files:
	gcc/cp         : ChangeLog pt.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/g++.dg/template: operator4.C 

Log message:
	PR c++/17068
	* pt.c (dependent_template_p): Treat IDENTIFIER_NODEs as
	dependent.
	
	PR c++/17068
	* g++.dg/template/operator4.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.4281&r2=1.4282
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/pt.c.diff?cvsroot=gcc&r1=1.907&r2=1.908
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.4155&r2=1.4156
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/operator4.C.diff?cvsroot=gcc&r1=NONE&r2=1.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17068

[Bug c++/17068] [3.4/3.5 regression] ICE: tree check: expected class 'd', have 'x' (identifier_node) in dependent_template_p, at cp/pt.c:12043

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-08-18 18:34 -------
Subject: Bug 17068

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	mmitchel@gcc.gnu.org	2004-08-18 18:34:26

Modified files:
	gcc/cp         : ChangeLog pt.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/g++.dg/template: operator4.C 

Log message:
	PR c++/17068
	* pt.c (dependent_template_p): Treat IDENTIFIER_NODEs as
	dependent.
	
	PR c++/17068
	* g++.dg/template/operator4.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3892.2.147&r2=1.3892.2.148
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/pt.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.816.2.39&r2=1.816.2.40
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3389.2.250&r2=1.3389.2.251
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/operator4.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.2.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17068

[Bug c++/17068] [3.4/3.5 regression] ICE: tree check: expected class 'd', have 'x' (identifier_node) in dependent_template_p, at cp/pt.c:12043

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-08-18 18:34 -------
Fixed in GCC 3.4.2.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17068