testf_dso_null
int testf_dso_null(void);
int (*testf_dso_null)(void);
testf_dso_null = dlsym(handle, "testf_dso_null");
ATF_REQUIRE_MSG(testf_dso_null != NULL, "dlsym fails: %s", dlerror());
ATF_REQUIRE(testf_dso_null() == 0xcafe);
int (*testf_dso_null)(void);
testf_dso_null = dlsym(handle, "testf_dso_null");
ATF_REQUIRE_MSG(testf_dso_null != NULL, "dlsym fails: %s", dlerror());
ATF_REQUIRE(testf_dso_null() == 0xcafe);