44 lines · c
1// RUN: %clang_cc1 -verify -Wunused -Wused-but-marked-unused -Wunused-parameter -Wunused -Wno-strict-prototypes -fsyntax-only %s2 3static void (*fp0)(void) __attribute__((unused));4 5static void __attribute__((unused)) f0(void);6 7// On K&R8int f1() __attribute__((unused));9 10int g0 __attribute__((unused));11 12int f2(void) __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(void) {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