Compile command:
clang++ -fsycl -fsycl-targets=nvptx64-nvidia-cuda-sycldevice   simple-sycl-app.cpp -o simple-sycl-app-cuda.exe -g


Breakpoint 1 at 0x40388b: file simple-sycl-app.cpp, line 5.
(gdb) run
Starting program: /home/varsha/sycl_workspace/simple-sycl-app-cuda.exe
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Breakpoint 1, main () at simple-sycl-app.cpp:5
5         cl::sycl::buffer<cl::sycl::cl_int, 1> Buffer(4);
(gdb) next
8         cl::sycl::queue Queue;
(gdb) next
[New Thread 0x7fffeef42700 (LWP 7699)]
terminate called after throwing an instance of 'cl::sycl::runtime_error'
  what():  OpenCL API failed. OpenCL API returns: -30 (CL_INVALID_VALUE) -30 (CL_INVALID_VALUE)

Thread 1 "simple-sycl-app" received signal SIGABRT, Aborted.
__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
51      ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007ffff6bae801 in __GI_abort () at abort.c:79
#2  0x00007ffff7ad8957 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#3  0x00007ffff7adeab6 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007ffff7adeaf1 in std::terminate() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#5  0x00007ffff7aded24 in __cxa_throw () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#6  0x00007ffff718fb5a in cl::sycl::detail::context_impl::context_impl(std::vector<cl::sycl::device, std::allocator<cl::sycl::device> >, std::function<void (cl::sycl::exception_list)>, bool) ()
   from /opt/intel/sycl-for-cuda//build/lib/libsycl.so
#7  0x00007ffff7213f4d in cl::sycl::context::context(std::vector<cl::sycl::device, std::allocator<cl::sycl::device> > const&, std::function<void (cl::sycl::exception_list)>, bool) ()
   from /opt/intel/sycl-for-cuda//build/lib/libsycl.so
#8  0x00007ffff72142e3 in cl::sycl::context::context(cl::sycl::device const&, std::function<void (cl::sycl::exception_list)>, bool) () from /opt/intel/sycl-for-cuda//build/lib/libsycl.so
#9  0x00007ffff7230b00 in cl::sycl::queue::queue(cl::sycl::device const&, std::function<void (cl::sycl::exception_list)> const&, cl::sycl::property_list const&) ()
   from /opt/intel/sycl-for-cuda//build/lib/libsycl.so
#10 0x0000000000405669 in cl::sycl::queue::queue(cl::sycl::device_selector const&, std::function<void (cl::sycl::exception_list)> const&, cl::sycl::property_list const&) (this=0x7fffffffccb0, DeviceSelector=warning: RTTI symbol not found for class 'cl::sycl::default_selector'

..., AsyncHandler=..., PropList=...) at /opt/intel/sycl-for-cuda/build/lib/clang/11.0.0/include/CL/sycl/queue.hpp:65
#11 0x0000000000404ea5 in cl::sycl::queue::queue (this=0x7fffffffccb0, PropList=...) at /opt/intel/sycl-for-cuda/build/lib/clang/11.0.0/include/CL/sycl/queue.hpp:38
#12 0x00000000004038fc in main () at simple-sycl-app.cpp:8