// RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -fsycl-int-header=%t.h %s -o %t.out
// RUN: FileCheck -input-file=%t.h %s

// This test checks the integration header generated when
// the kernel argument is union.

// CHECK: #include <sycl/detail/kernel_desc.hpp>

// CHECK: class kernel_A;

// CHECK: namespace sycl {
// CHECK-NEXT: inline namespace _V1 {
// CHECK-NEXT: namespace detail {

// CHECK: static constexpr
// CHECK-NEXT: const char* const kernel_names[] = {
// CHECK-NEXT:   "_ZTSZ4mainE8kernel_A",
// CHECK-NEXT:   ""
// CHECK-NEXT: };

// CHECK: static constexpr
// CHECK-NEXT: const kernel_param_desc_t kernel_signatures[] = {
// CHECK-NEXT:   //--- _ZTSZ4mainE8kernel_A
// CHECK-NEXT:  { kernel_param_kind_t::kind_std_layout, 12, 0 },
// CHECK-EMPTY:
// CHECK-NEXT:  { kernel_param_kind_t::kind_invalid, -987654321, -987654321 },
// CHECK-NEXT:};

// CHECK: template <> struct KernelInfo<kernel_A> {

union MyUnion {
  int FldInt;
  char FldChar;
  float FldArr[3];
};

template <typename name, typename Func>
__attribute__((sycl_kernel)) void a_kernel(Func kernelFunc) {
  kernelFunc();
}

int main() {

  MyUnion obj;

  a_kernel<class kernel_A>(
      [=]() {
        float local = obj.FldArr[2];
      });
}