Added explicit alias for sycl::plus

Author: maximdimakov

sycl/include/CL/sycl/group_algorithm.hpp

@@ -7,7 +7,6 @@
 //===----------------------------------------------------------------------===//
 
 #pragma once
-
 #include <CL/__spirv/spirv_ops.hpp>
 #include <CL/__spirv/spirv_types.hpp>
 #include <CL/__spirv/spirv_vars.hpp>

sycl/test/extensions/group-algorithm.cpp

@@ -76,7 +76,7 @@ int main() {
   std::iota(input.begin(), input.end(), 0);
   std::fill(output.begin(), output.end(), 0);
 
-  test<class KernelNamePlusV>(q, input, output, plus<>(), 0, GeZero());
+  test<class KernelNamePlusV>(q, input, output, sycl::plus<>(), 0, GeZero());
   test<class KernelNameMinimumV>(q, input, output, minimum<>(),
                                  std::numeric_limits<int>::max(), IsEven());