clang/test/Misc/warn-sysheader.cpp

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