warn-unused-result.cpp [plain text]
int f() __attribute__((warn_unused_result));
struct S {
void t() const;
};
S g1() __attribute__((warn_unused_result));
S *g2() __attribute__((warn_unused_result));
S &g3() __attribute__((warn_unused_result));
void test() {
f(); g1(); g2(); g3();
(void)f();
(void)g1();
(void)g2();
(void)g3();
if (f() == 0) return;
g1().t();
g2()->t();
g3().t();
int i = f();
S s1 = g1();
S *s2 = g2();
S &s3 = g3();
const S &s4 = g1();
}
struct X {
int foo() __attribute__((warn_unused_result));
};
void bah() {
X x, *x2;
x.foo(); x2->foo(); }