llvm/clang/test/Driver/cxx_for_opencl.clcpp

// RUN: %clang %s -Xclang -verify -fsyntax-only
// RUN: %clang %s -cl-std=clc++ -Xclang -verify -fsyntax-only
// RUN: %clang %s -cl-std=cl2.0 -Xclang -verify -fsyntax-only
// RUN: %clang %s -### 2>&1 | FileCheck %s

// CHECK: "-x" "clcpp"

#ifdef __OPENCL_CPP_VERSION__
//expected-no-diagnostics
#endif

kernel void k(){
  auto a = get_local_id(1);
#ifndef __OPENCL_CPP_VERSION__
//expected-error@-2{{OpenCL C version 2.0 does not support the 'auto' storage class specifier}}
//expected-error@-3{{type specifier missing, defaults to 'int'}}
#endif
}