Segmentation fault in GHashTable

[Uzytkownik <uzytkownik2 poczta onet pl>]

I've problem with GHashTable:
(...)
self->private->check = g_hash_table_new(g_int_hash, g_int_equal);
g_hash_table_insert(self->private->check, GINT_TO_POINTER(3), "%%(.*)");
(...)

In unit test(I use check) it show:
(...)
check-plik.c:30:E:Core:funkcja: (after this point) Received signal 11
(Segmentation fault)

And I know that error is in seconde line.

What is wrong?

Regards
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