[Bug c++/47336] New: ICE: "Error reporting routines re-entered"

[Bug c++/47336] New: ICE: "Error reporting routines re-entered"

[zeratul976 at hotmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47336

           Summary: ICE: "Error reporting routines re-entered"
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zeratul976@hotmail.com


For the following code:

struct A
{
    template <typename T>
    struct B
    {
    };

    template <typename T>
    B<T> f(T t)
    {
        return B<T>();
    }
};

template <typename T>
auto g(T t) -> decltype(A().f(t))
{
    return A().f(t);
}

template <typename S>
class C
{
    struct D
    {
    };
    D d;
public:
    decltype(g(d)) h() 
    {
        return g(d);
    }
};

void g()
{
    C<int> c;
    c.h();
}


Both gcc 4.5 and 4.6 give the following error:

test.cpp: In instantiation of ‘decltype (A().A::B<T> A::f(t))
     g(T) [with T = C<int>::D, decltype (A().A::f(t)) = A::B<C<int>::D>]’:

Internal compiler error: Error reporting routines re-entered.

As far as I can tell, this is valid C++0x code.

[Bug c++/47336] [C++0x] ICE: "Error reporting routines re-entered"

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47336

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-04-18 23:23:36 UTC ---
Here's another example which produces the "error reporting routines re-entered"
ICE, this time on invalid code:


template<typename T> T declval();

template<typename T>
struct S {

  template<typename U>
    static U get(const volatile T&);

  template<typename U>
    static decltype(*declval<U>()) get(...);

  typedef decltype(get<T>(declval<T>())) type;
};

struct X { };

S<X>::type x;

[Bug c++/47336] [C++0x] ICE: "Error reporting routines re-entered"

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47336

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2011.05.22 20:03:39
                 CC|                            |jason at gcc dot gnu.org
         AssignedTo|unassigned at gcc dot       |jason at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

[Bug c++/47336] [C++0x] ICE: "Error reporting routines re-entered"

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47336

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> 2011-05-23 15:32:34 UTC ---
Author: jason
Date: Mon May 23 15:32:29 2011
New Revision: 174072

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174072
Log:
    PR c++/47336
    * error.c (dump_template_bindings): Suppress access control.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/error3.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/error.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/47336] [C++0x] ICE: "Error reporting routines re-entered"

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47336

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2011-05-25 01:08:26 UTC ---
Author: jason
Date: Wed May 25 01:08:24 2011
New Revision: 174160

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174160
Log:
    PR c++/47336
    * error.c (dump_template_bindings): Suppress access control.

Added:
    branches/gcc-4_6-branch/gcc/testsuite/g++.dg/cpp0x/error3.C
Modified:
    branches/gcc-4_6-branch/gcc/cp/ChangeLog
    branches/gcc-4_6-branch/gcc/cp/error.c
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog

[Bug c++/47336] [C++0x] ICE: "Error reporting routines re-entered"

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47336

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.6.1

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2011-05-25 01:26:19 UTC ---
Original testcase fixed for 4.6.1.  The testcase in comment 1 is a different
problem and should get its own bug report.

[Bug c++/47336] [C++0x] ICE: "Error reporting routines re-entered"

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47336

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-05-25 08:58:32 UTC ---
Thanks, Jason, I submitted PR 49156