clang/test/SemaCXX/cxx2c-attributes.cpp

   1 // RUN: %clang_cc1 %s -x c++ -std=c++11 -triple x86_64-pc-linux -fsyntax-only -verify -Wno-c++17-extensions
   2 // RUN: %clang_cc1 %s -x c++ -std=c++11 -triple x86_64-windows-msvc -fsyntax-only -verify=msvc -Wno-c++17-extensions
   3 // expected-no-diagnostics
   4
   5 // Check we return non-zero values for supported attributes as per
   6 // wg21.link/P2552
   7 static_assert(__has_cpp_attribute(assume));
   8
   9 // The standard does not prescribe a behavior for [[carries_dependency]]
  10
  11 static_assert(__has_cpp_attribute(deprecated));
  12 static_assert(__has_cpp_attribute(fallthrough));
  13 static_assert(__has_cpp_attribute(likely));
  14 static_assert(__has_cpp_attribute(unlikely));
  15 static_assert(__has_cpp_attribute(maybe_unused));
  16 static_assert(__has_cpp_attribute(nodiscard));
  17 static_assert(__has_cpp_attribute(noreturn));
  18
  19 // We do not support [[no_unique_address]] in MSVC emulation mode
  20 static_assert(__has_cpp_attribute(no_unique_address)); // msvc-error {{static assertion failed}}