xref: /aosp_15_r20/external/clang/test/SemaCXX/warn-unused-label-error.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315)
1*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -Wunused-variable -Wunused-label -verify %s
2*67e74705SXin Li 
3*67e74705SXin Li static int unused_local_static;
4*67e74705SXin Li 
5*67e74705SXin Li namespace PR8455 {
f()6*67e74705SXin Li   void f() {
7*67e74705SXin Li     A: // expected-warning {{unused label 'A'}}
8*67e74705SXin Li       __attribute__((unused)) int i; // attribute applies to variable
9*67e74705SXin Li     B: // attribute applies to label
10*67e74705SXin Li       __attribute__((unused)); int j; // expected-warning {{unused variable 'j'}}
11*67e74705SXin Li   }
12*67e74705SXin Li 
g()13*67e74705SXin Li   void g() {
14*67e74705SXin Li     C: // unused label 'C' will not appear here because an error has occurred
15*67e74705SXin Li       __attribute__((unused))
16*67e74705SXin Li       #pragma weak unused_local_static  // expected-error {{expected ';' after __attribute__}}
17*67e74705SXin Li       ;
18*67e74705SXin Li   }
19*67e74705SXin Li 
h()20*67e74705SXin Li   void h() {
21*67e74705SXin Li     D: // expected-warning {{unused label 'D'}}
22*67e74705SXin Li       #pragma weak unused_local_static
23*67e74705SXin Li       __attribute__((unused))  // expected-warning {{declaration does not declare anything}}
24*67e74705SXin Li       ;
25*67e74705SXin Li   }
26*67e74705SXin Li }
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