C strange warning.

http://pastebin.com/3js28CTR
$> gcc main.c
If tata(char|short|float c) => warning
If tata(int|long|double c) => nothing

Does somebody could explain why exactly ? =)

>>27
(void)i(void)n(void) (void)C(void)9(void)9(void),(void) (void)((void))(void) (void)i(void)s(void) (void)e(void)q(void)u(void)i(void)v(void)a(void)l(void)e(void)n(void)t(void) (void)t(void)o(void) (void)((void)v(void)o(void)i(void)d(void))(void) (void)a(void)n(void)y(void)w(void)a(void)y(void).(void)