[Bug c++/12700] New: [g++ 3.4] ICE in size_binop

[grigory at stl dot sarov dot ru]

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12700

           Summary: [g++ 3.4] ICE in size_binop
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: grigory at stl dot sarov dot ru
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-redhat-linux
  GCC host triplet: i686-redhat-linux
GCC target triplet: i686-redhat-linux

Yet another ICE related to covariant thunks. G++ 3.4 gives it on the the test-
case listed below. This happens both on i686-redhat-linux and ia64-suse-linux.

$ g++ -c ice-2.cpp
ice-2.cpp:19: internal compiler error: in size_binop, at fold-const.c:1489
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.


$ cat ice-2.cpp
struct c2 { int i; };

struct c1 {
    virtual c2& f8() {};
};

struct c3 : c1, c2 {
    virtual c2& f8() {};
};

struct c11 : public c1 {
    virtual c3& f8() {};
};

struct c15 : virtual c3 {
    virtual c2& f8() {};
};

struct c18 : virtual c11 {
    virtual c15& f8();
};

c15& c18::f8() { throw 0; };