[SYCL] Add a test to see if build succeeds with -Wall -Werror

Signed-off-by: Sergey Kanaev <[email protected]>

Author: Sergey Kanaev

sycl/test/warnings/warnings.cpp

@@ -0,0 +1,21 @@
+// RUN: %clangxx -Wall -Wpessimizing-move -Wunused-variable -Wmismatched-tags -Wunneeded-internal-declaration -Werror -fsycl %s -o %t.out
+
+#include <CL/sycl.hpp>
+
+using namespace cl::sycl;
+
+int main(void) {
+  // add a very simple kernel to see if compilation succeeds with -Werror
+  int data1[10] = {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1};
+
+  buffer<int, 1> B(data1, range<1>(10), {property::buffer::use_host_ptr()});
+  queue Q;
+  Q.submit([&](handler &CGH) {
+    auto Accessor = B.get_access<access::mode::read_write>(CGH);
+    CGH.parallel_for<class TheSimpleKernel>(range<1>{10}, [=](id<1> Item) {
+      Accessor[Item] = 0;
+    });
+  });
+
+  return 0;
+}