storing integers in pointers

[ibr ata cs hun edu tr]

Hello,

I'm using GTree and GHashTable to store bytes as data (via provided type
conversion macros like GINT_TO_POINTER). Lookup functions return NULL if
the key was not found. Does this mean that one can't use the type
conversion trick to store data for which 0 is a valid value?

With kind regards,
Baurzhan.