[Bug middle-end/51436] [4.7 Regression] ICE(segfault) in gimplify_and_update_call_from_tree gimple-fold.c:603

["markus at trippelsdorf dot de" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51436

Markus Trippelsdorf <markus at trippelsdorf dot de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |markus at trippelsdorf dot
                   |                            |de

--- Comment #1 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2011-12-06 10:31:20 UTC ---
Slightly smaller testcase:

typedef long unsigned size_t;
extern "C" void *memcpy (void *, __const void *, size_t);
template < class Dest, class Source > struct BitCastHelper {
    static Dest cast (const Source & source) __attribute__ ((always_inline)) {
        Dest dest;
        memcpy (0, &source, sizeof dest);
    }
};
template < class Dest, class Source > Dest BitCast (Source)
{
    BitCastHelper < Dest, Source >::cast (0);
}

class MaybeObject
{
};
class Object:MaybeObject
{
public:
    static Object *cast (Object *) {
    }
};
class HeapObject:public Object
{
};
class String:public HeapObject
{
};
class ExternalString:public String
{
};
class ExternalTwoByteString:public ExternalString
{
};

template < typename T > class Handle
{
public:
    Handle () {
    }
    T *operator* () const;
    template < class S > static Handle < T > cast (Handle < S > that) {
        T::cast (*that);
    }
    T **location_;
};

template < typename T > T * Handle < T >::operator* () const
{
    *BitCast < T ** >(location_);
}

void
TestCharacterStream ()
{
    Handle < String > uc16_string;
    Handle < ExternalTwoByteString >::cast (uc16_string);
}