xref: /aosp_15_r20/external/clang/test/Misc/warn-sysheader.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315)
1*67e74705SXin Li // Test that -Wsystem-headers works with default and custom mappings like -Werror.
2*67e74705SXin Li // Keep run lines at the bottom for line number stability.
3*67e74705SXin Li 
4*67e74705SXin Li #ifdef IS_SYSHEADER
5*67e74705SXin Li #pragma clang system_header
6*67e74705SXin Li 
f()7*67e74705SXin Li int f() { return (int)0; } // Use the old-style-cast warning as an arbitrary "ordinary" diagnostic for the purpose of testing.
8*67e74705SXin Li 
9*67e74705SXin Li #warning "custom message"
10*67e74705SXin Li 
11*67e74705SXin Li #if defined(A) || defined(B)
12*67e74705SXin Li // expected-warning@9 {{"custom message"}}
13*67e74705SXin Li #elif defined(C)
14*67e74705SXin Li // expected-warning@7 {{use of old-style cast}}
15*67e74705SXin Li // expected-warning@9 {{"custom message"}}
16*67e74705SXin Li #elif defined(D)
17*67e74705SXin Li // expected-error@7 {{use of old-style cast}}
18*67e74705SXin Li // expected-error@9 {{"custom message"}}
19*67e74705SXin Li #elif defined(E)
20*67e74705SXin Li // expected-error@7 {{use of old-style cast}}
21*67e74705SXin Li // expected-warning@9 {{"custom message"}}
22*67e74705SXin Li #endif
23*67e74705SXin Li 
24*67e74705SXin Li #else
25*67e74705SXin Li #define IS_SYSHEADER
26*67e74705SXin Li #include __FILE__
27*67e74705SXin Li #endif
28*67e74705SXin Li 
29*67e74705SXin Li // RUN: %clang_cc1 -verify -fsyntax-only -DA %s
30*67e74705SXin Li // RUN: %clang_cc1 -verify -fsyntax-only -DB -Wold-style-cast %s
31*67e74705SXin Li // RUN: %clang_cc1 -verify -fsyntax-only -DC -Wold-style-cast -Wsystem-headers %s
32*67e74705SXin Li // RUN: %clang_cc1 -verify -fsyntax-only -DD -Wold-style-cast -Wsystem-headers -Werror %s
33*67e74705SXin Li // RUN: %clang_cc1 -verify -fsyntax-only -DE -Wold-style-cast -Wsystem-headers -Werror=old-style-cast %s
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