How to use Glib::Value?

[p sun fun gmail com]

Hi,

Have this code 
```
Glib::Value<int> datai;
datai.init(G_TYPE_INT);
datai.set(8);
std::cout << "Value = " << datai.get() << std::endl;
```
I see in stdout:
Value = 8

Works good. Now I would like to use another type: Glib::DateTime
```
Glib::Value<Glib::DateTime> data;

data.init(G_TYPE_DATE_TIME);
Glib::DateTime ctime = Glib::DateTime::create_now_utc();
data.set(ctime);
```

This compiles ok, but generates 
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7b2405c in Glib::DateTime::operator= (this=0x0, src=...) at
/home/pavlo/jhbuild/checkout/glibmm-2.4/glib/glibmm/datetime.cc:89
89        if(gobject_)

Part from dbg:
```
26        Glib::Value<Glib::DateTime> data;
(gdb) 
28        data.init(G_TYPE_DATE_TIME);
(gdb) p data
$1 = {<Glib::ValueBase_Boxed> = {<Glib::ValueBase> = {gobject_ =
{g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0,
v_int64 = 0, 
            v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0},
{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64
= 0, 
            v_float = 0, v_double = 0, v_pointer = 0x0}}}}, <No data
fields>}, static custom_type_ = <optimized out>}
(gdb) n
29        Glib::DateTime ctime = Glib::DateTime::create_now_utc();
(gdb) p data
$2 = {<Glib::ValueBase_Boxed> = {<Glib::ValueBase> = {gobject_ =
{g_type = 93824992400576, data = {{v_int = 0, v_uint = 0, v_long = 0,
v_ulong = 0, 
            v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0,
v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0,
v_int64 = 0, 
            v_uint64 = 0, v_float = 0, v_double = 0, v_pointer =
0x0}}}}, <No data fields>}, static custom_type_ = <optimized out>}
(gdb) n
30        data.set(ctime);
(gdb) p data
$3 = {<Glib::ValueBase_Boxed> = {<Glib::ValueBase> = {gobject_ =
{g_type = 93824992400576, data = {{v_int = 0, v_uint = 0, v_long = 0,
v_ulong = 0, 
            v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0,
v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0,
v_int64 = 0, 
            v_uint64 = 0, v_float = 0, v_double = 0, v_pointer =
0x0}}}}, <No data fields>}, static custom_type_ = <optimized out>}
(gdb) p ctime
$4 = {gobject_ = 0x55555557c4a0}
(gdb) n

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7b2405c in Glib::DateTime::operator= (this=0x0, src=...) at
/home/pavlo/jhbuild/checkout/glibmm-2.4/glib/glibmm/datetime.cc:89
89        if(gobject_)
(gdb) 
```

Could you please help me to understand how to use Glib::Value<T> with
types such as Glib::DateTime?

Thanks.


-- 
- Pavlo Solntsev
---------------------------------------------
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