1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 3 int f() __attribute__((warn_unused_result)); 4 5 struct S { 6 void t() const; 7 }; 8 S g1() __attribute__((warn_unused_result)); 9 S *g2() __attribute__((warn_unused_result)); 10 S &g3() __attribute__((warn_unused_result)); 11 12 void test() { 13 f(); // expected-warning {{ignoring return value}} 14 g1(); // expected-warning {{ignoring return value}} 15 g2(); // expected-warning {{ignoring return value}} 16 g3(); // expected-warning {{ignoring return value}} 17 18 (void)f(); 19 (void)g1(); 20 (void)g2(); 21 (void)g3(); 22 23 if (f() == 0) return; 24 25 g1().t(); 26 g2()->t(); 27 g3().t(); 28 29 int i = f(); 30 S s1 = g1(); 31 S *s2 = g2(); 32 S &s3 = g3(); 33 const S &s4 = g1(); 34 } 35 36 struct X { 37 int foo() __attribute__((warn_unused_result)); 38 }; 39 40 void bah() { 41 X x, *x2; 42 x.foo(); // expected-warning {{ignoring return value}} 43 x2->foo(); // expected-warning {{ignoring return value}} 44 } 45
