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