93 lines · c
1// RUN: %clang_cc1 -fsyntax-only -verify %s2 3#if !__has_extension(statement_attributes_with_gnu_syntax)4#error "We should have statement attributes with GNU syntax support"5#endif6 7void foo(int i) {8 9 __attribute__((unknown_attribute)); // expected-warning {{unknown attribute 'unknown_attribute' ignored}}10 __attribute__(()) {}11 __attribute__(()) if (0) {}12 __attribute__(()) for (;;);13 __attribute__(()) do {14 __attribute__(()) continue;15 }16 while (0)17 ;18 __attribute__(()) while (0);19 20 __attribute__(()) switch (i) {21 __attribute__(()) case 0 :22 __attribute__(()) default :23 __attribute__(()) break;24 }25 26 __attribute__(()) goto here;27 __attribute__(()) here :28 29 __attribute__(()) return;30 31 __attribute__((noreturn)) {} // expected-error {{'noreturn' attribute cannot be applied to a statement}}32 __attribute__((noreturn)) if (0) {} // expected-error {{'noreturn' attribute cannot be applied to a statement}}33 __attribute__((noreturn)) for (;;); // expected-error {{'noreturn' attribute cannot be applied to a statement}}34 __attribute__((noreturn)) do { // expected-error {{'noreturn' attribute cannot be applied to a statement}}35 __attribute__((unavailable)) continue; // expected-error {{'unavailable' attribute cannot be applied to a statement}}36 }37 while (0)38 ;39 __attribute__((unknown_attribute)) while (0); // expected-warning {{unknown attribute 'unknown_attribute' ignored}}40 41 __attribute__((unused)) switch (i) { // expected-error {{'unused' attribute cannot be applied to a statement}}42 __attribute__((uuid)) case 0: // expected-warning {{unknown attribute 'uuid' ignored}}43 __attribute__((visibility(""))) default: // expected-error {{'visibility' attribute cannot be applied to a statement}}44 __attribute__((carries_dependency)) break; // expected-error {{'carries_dependency' attribute cannot be applied to a statement}}45 }46 47 __attribute__((fastcall)) goto there; // expected-error {{'fastcall' attribute cannot be applied to a statement}}48 __attribute__((noinline)) there : // expected-warning {{'noinline' attribute only applies to functions and statements}}49 50 __attribute__((weakref)) return; // expected-error {{'weakref' attribute only applies to variables and functions}}51 52 __attribute__((carries_dependency)); // expected-error {{'carries_dependency' attribute cannot be applied to a statement}}53 __attribute__((carries_dependency)) {} // expected-error {{'carries_dependency' attribute cannot be applied to a statement}}54 __attribute__((carries_dependency)) if (0) {} // expected-error {{'carries_dependency' attribute cannot be applied to a statement}}55 __attribute__((carries_dependency)) for (;;); // expected-error {{'carries_dependency' attribute cannot be applied to a statement}}56 __attribute__((carries_dependency)) do { // expected-error {{'carries_dependency' attribute cannot be applied to a statement}}57 __attribute__((carries_dependency)) continue; // expected-error {{'carries_dependency' attribute cannot be applied to a statement}} ignored}}58 }59 while (0)60 ;61 __attribute__((carries_dependency)) while (0); // expected-error {{'carries_dependency' attribute cannot be applied to a statement}}62 63 __attribute__((carries_dependency)) switch (i) { // expected-error {{'carries_dependency' attribute cannot be applied to a statement}} ignored}}64 __attribute__((carries_dependency)) case 0: // expected-error {{'carries_dependency' attribute cannot be applied to a statement}}65 __attribute__((carries_dependency)) default: // expected-error {{'carries_dependency' attribute cannot be applied to a statement}}66 __attribute__((carries_dependency)) break; // expected-error {{'carries_dependency' attribute cannot be applied to a statement}}67 }68 69 __attribute__((carries_dependency)) goto here; // expected-error {{'carries_dependency' attribute cannot be applied to a statement}}70 71 __attribute__((carries_dependency)) return; // expected-error {{'carries_dependency' attribute cannot be applied to a statement}}72}73 74void bar(void);75 76void foobar(void) {77 __attribute__((nomerge)) bar();78 __attribute__(()) bar(); // expected-error {{expected identifier or '('}}79 __attribute__((unused, nomerge)) bar(); // expected-error {{expected identifier or '('}}80 __attribute__((nomerge, unused)) bar(); // expected-error {{expected identifier or '('}}81 __attribute__((nomerge(1, 2))) bar(); // expected-error {{'nomerge' attribute takes no arguments}}82 int x;83 __attribute__((nomerge)) x = 10; // expected-warning {{'nomerge' attribute is ignored because there exists no call expression inside the statement}}84 85 __attribute__((nomerge)) label : bar(); // expected-error {{'nomerge' attribute only applies to functions, statements and variables}}86}87 88int f(void);89 90__attribute__((nomerge)) static int (*fptr)(void);91__attribute__((nomerge)) static int i; // expected-warning {{'nomerge' attribute is ignored because 'i' is not a function pointer}}92struct buz {} __attribute__((nomerge)); // expected-error {{'nomerge' attribute only applies to functions, statements and variables}}93