1// RUN: %clang_cc1 -verify -Wunused -Wused-but-marked-unused -Wunused-parameter -Wunused -fsyntax-only %s 2 3static void (*fp0)(void) __attribute__((unused)); 4 5static void __attribute__((unused)) f0(void); 6 7// On K&R 8int f1() __attribute__((unused)); 9 10int g0 __attribute__((unused)); 11 12int f2() __attribute__((unused(1, 2))); // expected-error {{'unused' attribute takes no arguments}} 13 14struct Test0_unused {} __attribute__((unused)); 15struct Test0_not_unused {}; 16typedef int Int_unused __attribute__((unused)); 17typedef int Int_not_unused; 18 19void test0() { 20 int x; // expected-warning {{unused variable}} 21 22 Int_not_unused i0; // expected-warning {{unused variable}} 23 Int_unused i1; // expected-warning {{'Int_unused' was marked unused but was used}} 24 25 struct Test0_not_unused s0; // expected-warning {{unused variable}} 26 struct Test0_unused s1; // expected-warning {{'Test0_unused' was marked unused but was used}} 27} 28 29int f3(int x) { // expected-warning{{unused parameter 'x'}} 30 return 0; 31} 32 33int f4(int x) { 34 return x; 35} 36 37int f5(int x __attribute__((__unused__))) { 38 return 0; 39} 40 41int f6(int x __attribute__((__unused__))) { 42 return x; // expected-warning{{'x' was marked unused but was used}} 43} 44