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