clang/test/Sema/alias-unused-win.cpp

   1 // RUN: %clang_cc1 -triple %ms_abi_triple -Wunused -x c -verify %s
   2 // RUN: %clang_cc1 -triple %ms_abi_triple -Wunused -verify=expected,cxx %s
   3
   4 #ifdef __cplusplus
   5 extern "C" {
   6 #endif
   7 static int f(void) { return 42; } // cxx-warning{{unused function 'f'}}
   8 int g(void) __attribute__((alias("f")));
   9
  10 static int foo [] = { 42, 0xDEAD };
  11 extern typeof(foo) bar __attribute__((unused, alias("foo")));
  12
  13 static int __attribute__((overloadable)) f0(int x) { return x; } // expected-warning{{unused function 'f0'}}
  14 static float __attribute__((overloadable)) f0(float x) { return x; } // expected-warning{{unused function 'f0'}}
  15 int g0(void) __attribute__((alias("?f0@@YAHH@Z")));
  16
  17 #ifdef __cplusplus
  18 /// https://github.com/llvm/llvm-project/issues/88593
  19 /// We report a warning in C++ mode because the internal linkage `resolver` gets
  20 /// mangled as it does not have a language linkage. GCC does not mangle
  21 /// `resolver` or report a warning.
  22 static int f1() { return 42; } // cxx-warning{{unused function 'f1'}}
  23 int g1(void) __attribute__((alias("?f1@@YAHXZ")));
  24 }
  25
  26 namespace ns {
  27 static int f3(int) { return 42; } // cxx-warning{{unused function 'f3'}}
  28 static int f3() { return 42; } // cxx-warning{{unused function 'f3'}}
  29 int g3() __attribute__((alias("?f3@ns@@YAHXZ")));
  30 }
  31 #endif