[Bug c++/46336] New: [C++0X] ICE on invalid: in register_constexpr_fundef, at cp/semantics.c:5571

[Bug c++/46336] New: [C++0X] ICE on invalid: in register_constexpr_fundef, at cp/semantics.c:5571

[marc.glisse at normalesup dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46336

           Summary: [C++0X] ICE on invalid: in register_constexpr_fundef,
                    at cp/semantics.c:5571
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: marc.glisse@normalesup.org


This is an ICE on invalid code that I hit while trying to reduce an example for
a more important bug.

extern "C" {
  enum A { };
  inline constexpr A
  f(A a, A b)
  { return A(static_cast<int>(a) & static_cast<int>(b)); }
  enum B { };
  inline constexpr B
  f(B a, B b)
  { return B(static_cast<int>(a) & static_cast<int>(b)); }
}



4.cc: In function ‘constexpr B f(B, B)’:
4.cc:8:13: error: declaration of C function ‘constexpr B f(B, B)’ conflicts
with
4.cc:4:3: error: previous declaration ‘constexpr A f(A, A)’ here
4.cc: In function ‘constexpr B f(B, B)’:
4.cc:9:58: internal compiler error: in register_constexpr_fundef, at
cp/semantics.c:5571

[Bug c++/46336] [C++0X] ICE on invalid: in register_constexpr_fundef, at cp/semantics.c:5571

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46336

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2010.11.07 11:13:05
                 CC|                            |jason at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2010-11-07 11:13:05 UTC ---
Let's add Jason in CC.

[Bug c++/46336] [C++0X] ICE on invalid: in register_constexpr_fundef, at cp/semantics.c:5571

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46336

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
         AssignedTo|unassigned at gcc dot       |jason at gcc dot gnu.org
                   |gnu.org                     |

[Bug c++/46336] [C++0X] ICE on invalid: in register_constexpr_fundef, at cp/semantics.c:5571

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46336

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> 2011-03-17 02:36:15 UTC ---
Author: jason
Date: Thu Mar 17 02:36:12 2011
New Revision: 171084

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=171084
Log:
    PR c++/46336
    * decl.c (duplicate_decls): Return NULL_TREE for clashing
    C functions.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-46336.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/parse/friend5.C

[Bug c++/46336] [C++0X] ICE on invalid: in register_constexpr_fundef, at cp/semantics.c:5571

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46336

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
            Version|4.6.0                       |4.7.0
         Resolution|                            |FIXED

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2011-03-17 02:37:50 UTC ---
Fixed for 4.7.