Postgresql Server exit when create function by load test.so

[aftern00n]

Hello, I compiled your project into test.so. But when I use posgresql to create function, the psgl server exits. The follow is the question:

test=# create function fuzz(integer,text) returns text as '/home/tea/libfuzzer-pg/test.so', 'fuzz' language c strict;
server closed the connection unexpectedly
	This probably means the server terminated abnormally
	before or while processing the request.
The connection to the server was lost. Attempting reset: Failed.

Did you have this problem and how did you deal with it?