gcc_assert()!

["Priya Sinha" <pucsd.priya@xxxxxxxxx>]

Hi,
I encountered some instances of gcc_assert esp in file gensupport.c.
for eg; on line no. 1131 the usage is as such :
gcc_assert (test);
Above test is declared as:
const struct c_test *test;

Could anyone plz tell me wat gcc_assert() does.
Thank You,
Priya