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[SYCL] Call to 'printArgs' is ambiguous #1011

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j-stephan opened this issue Jan 15, 2020 · 2 comments · Fixed by #1062
Closed

[SYCL] Call to 'printArgs' is ambiguous #1011

j-stephan opened this issue Jan 15, 2020 · 2 comments · Fixed by #1062
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@smaslov-intel
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bug Something isn't working

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@j-stephan
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I am currently trying to implement a SYCL backend for a third-party application. In this application's source code (which I can't change) there is a function called printArgs. Unfortunately, this breaks the compilation since there is another printArgs inside the SYCL implementation:

/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:183:47: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_device *, _pi_device_info, unsigned long, void *, unsigned long *), 24>::operator()<_pi_device *, _pi_device_info, unsigned long, _pi_platform **, nullptr_t>' requested here
    PiResult Err = (CallPi<FnType, FnOffset>::operator()(args...));
                                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/device_info.hpp:63:29: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPiAndCheck<_pi_result (*)(_pi_device *, _pi_device_info, unsigned long, void *, unsigned long *), 24, cl::sycl::runtime_error>::operator()<_pi_device *, _pi_device_info, unsigned long, _pi_platform **, nullptr_t>' requested here
    PI_CALL(piDeviceGetInfo)(dev, pi::cast<RT::PiDeviceInfo>(param),
                            ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/device_info.hpp:298:71: note: in instantiation of member function 'cl::sycl::detail::get_device_info<cl::sycl::platform, cl::sycl::info::device::platform>::get' requested here
    platform plt = get_device_info<platform, info::device::platform>::get(dev);
                                                                      ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_device *, Args = <_pi_device_info, unsigned long, _pi_platform **, nullptr_t>]
void printArgs(Arg0 arg0, Args... args) {
     ^
/home/jan/workspace/third/party/application/kernel/../Config.hpp:198:6: note: candidate function [with TFirst = _pi_device *, TArgs = <_pi_device_info, unsigned long, _pi_platform **, nullptr_t>]
void printArgs(TFirst first, TArgs... args)
     ^

IMHO this shouldn't break so easily since the syntax printArgs(Arg0, Args...) is probably quite common.
@bader bader added the bug Something isn't working label Jan 15, 2020
@smaslov-intel
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The SYCL's printArgs and the call to it are inside nested namespace:
https://github.com/intel/llvm/blob/sycl/sycl/include/CL/sycl/detail/pi.hpp

__SYCL_INLINE namespace cl {
namespace sycl {
namespace detail {
namespace pi {

Even if the top-level "cl" is inlined, I don't see how this could possible clash with the user's printArgs unless they happen to define it also in the [cl]::sycl::detail::pi namespace, which would be weird.

@j-stephan, can you give a reproducer, please?

@j-stephan
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Sorry for the delay. Here is a reproducer:

#include <iostream>
    
template <typename TArg0, typename... TArgs>
auto printArgs(TArg0 arg, TArgs... args)
{
    std::cout << 42 << std::endl;
}

#include <CL/sycl.hpp>

int main()
{
    return 0;
}

Command line:

clang++ -std=c++17 -fsycl -O3 printArgs.cpp -lOpenCL

Full error log:

In file included from printArgs.cpp:9:
In file included from /home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl.hpp:11:
In file included from /home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/accessor.hpp:12:
In file included from /home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/atomic.hpp:13:
In file included from /home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/helpers.hpp:15:
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:183:47: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_platform *, _pi_platform_info, unsigned long, void *, unsigned long *), 8>::operator()<_pi_platform *, _pi_platform_info, int, nullptr_t, unsigned long *>' requested here
    PiResult Err = (CallPi<FnType, FnOffset>::operator()(args...));
                                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/platform_info.hpp:27:31: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPiAndCheck<_pi_result (*)(_pi_platform *, _pi_platform_info, unsigned long, void *, unsigned long *), 8, cl::sycl::runtime_error>::operator()<_pi_platform *, _pi_platform_info, int, nullptr_t, unsigned long *>' requested here
    PI_CALL(piPlatformGetInfo)(plt, pi::cast<pi_platform_info>(param), 0,
                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/platform_info.hpp:45:70: note: in instantiation of member function 'cl::sycl::detail::get_platform_info<std::__cxx11::basic_string<char>, cl::sycl::info::platform::extensions>::get' requested here
        get_platform_info<string_class, info::platform::extensions>::get(plt);
                                                                     ^
printArgs.cpp:4:6: note: candidate function [with TArg0 = _pi_platform *, TArgs = <_pi_platform_info, int, nullptr_t, unsigned long *>]
auto printArgs(TArg0 arg, TArgs... args)
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_platform *, Args = <_pi_platform_info, int, nullptr_t, unsigned long *>]
void printArgs(Arg0 arg0, Args... args) {
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:183:47: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_platform *, _pi_platform_info, unsigned long, void *, unsigned long *), 8>::operator()<_pi_platform *, _pi_platform_info, unsigned long, char *, nullptr_t>' requested here
    PiResult Err = (CallPi<FnType, FnOffset>::operator()(args...));
                                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/platform_info.hpp:34:31: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPiAndCheck<_pi_result (*)(_pi_platform *, _pi_platform_info, unsigned long, void *, unsigned long *), 8, cl::sycl::runtime_error>::operator()<_pi_platform *, _pi_platform_info, unsigned long, char *, nullptr_t>' requested here
    PI_CALL(piPlatformGetInfo)(plt, pi::cast<pi_platform_info>(param),
                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/platform_info.hpp:45:70: note: in instantiation of member function 'cl::sycl::detail::get_platform_info<std::__cxx11::basic_string<char>, cl::sycl::info::platform::extensions>::get' requested here
        get_platform_info<string_class, info::platform::extensions>::get(plt);
                                                                     ^
printArgs.cpp:4:6: note: candidate function [with TArg0 = _pi_platform *, TArgs = <_pi_platform_info, unsigned long, char *, nullptr_t>]
auto printArgs(TArg0 arg, TArgs... args)
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_platform *, Args = <_pi_platform_info, unsigned long, char *, nullptr_t>]
void printArgs(Arg0 arg0, Args... args) {
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:183:47: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_device *, _pi_device_info, unsigned long, void *, unsigned long *), 24>::operator()<_pi_device *, _pi_device_info, unsigned long, unsigned long *, nullptr_t>' requested here
    PiResult Err = (CallPi<FnType, FnOffset>::operator()(args...));
                                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/device_info.hpp:126:29: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPiAndCheck<_pi_result (*)(_pi_device *, _pi_device_info, unsigned long, void *, unsigned long *), 24, cl::sycl::runtime_error>::operator()<_pi_device *, _pi_device_info, unsigned long, unsigned long *, nullptr_t>' requested here
    PI_CALL(piDeviceGetInfo)(
                            ^
printArgs.cpp:4:6: note: candidate function [with TArg0 = _pi_device *, TArgs = <_pi_device_info, unsigned long, unsigned long *, nullptr_t>]
auto printArgs(TArg0 arg, TArgs... args)
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_device *, Args = <_pi_device_info, unsigned long, unsigned long *, nullptr_t>]
void printArgs(Arg0 arg0, Args... args) {
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:183:47: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_device *, _pi_device_info, unsigned long, void *, unsigned long *), 24>::operator()<_pi_device *, _pi_device_info, unsigned long, char *, nullptr_t>' requested here
    PiResult Err = (CallPi<FnType, FnOffset>::operator()(args...));
                                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/device_info.hpp:80:29: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPiAndCheck<_pi_result (*)(_pi_device *, _pi_device_info, unsigned long, void *, unsigned long *), 24, cl::sycl::runtime_error>::operator()<_pi_device *, _pi_device_info, unsigned long, char *, nullptr_t>' requested here
    PI_CALL(piDeviceGetInfo)(dev, pi::cast<RT::PiDeviceInfo>(param), resultSize,
                            ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/device_info.hpp:163:72: note: in instantiation of member function 'cl::sycl::detail::get_device_info<std::__cxx11::basic_string<char>, cl::sycl::info::device::built_in_kernels>::get' requested here
        get_device_info<string_class, info::device::built_in_kernels>::get(dev);
                                                                       ^
printArgs.cpp:4:6: note: candidate function [with TArg0 = _pi_device *, TArgs = <_pi_device_info, unsigned long, char *, nullptr_t>]
auto printArgs(TArg0 arg, TArgs... args)
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_device *, Args = <_pi_device_info, unsigned long, char *, nullptr_t>]
void printArgs(Arg0 arg0, Args... args) {
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:183:47: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_device *, _pi_device_info, unsigned long, void *, unsigned long *), 24>::operator()<_pi_device *, _pi_device_info, int, nullptr_t, unsigned long *>' requested here
    PiResult Err = (CallPi<FnType, FnOffset>::operator()(args...));
                                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/device_info.hpp:187:29: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPiAndCheck<_pi_result (*)(_pi_device *, _pi_device_info, unsigned long, void *, unsigned long *), 24, cl::sycl::runtime_error>::operator()<_pi_device *, _pi_device_info, int, nullptr_t, unsigned long *>' requested here
    PI_CALL(piDeviceGetInfo)(dev, info_partition, 0, nullptr, &resultSize);
                            ^
printArgs.cpp:4:6: note: candidate function [with TArg0 = _pi_device *, TArgs = <_pi_device_info, int, nullptr_t, unsigned long *>]
auto printArgs(TArg0 arg, TArgs... args)
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_device *, Args = <_pi_device_info, int, nullptr_t, unsigned long *>]
void printArgs(Arg0 arg0, Args... args) {
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:183:47: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_device *, _pi_device_info, unsigned long, void *, unsigned long *), 24>::operator()<_pi_device *, _pi_device_info, unsigned long, long *, nullptr_t>' requested here
    PiResult Err = (CallPi<FnType, FnOffset>::operator()(args...));
                                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/device_info.hpp:195:29: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPiAndCheck<_pi_result (*)(_pi_device *, _pi_device_info, unsigned long, void *, unsigned long *), 24, cl::sycl::runtime_error>::operator()<_pi_device *, _pi_device_info, unsigned long, long *, nullptr_t>' requested here
    PI_CALL(piDeviceGetInfo)(dev, info_partition, resultSize, arrayResult.get(),
                            ^
printArgs.cpp:4:6: note: candidate function [with TArg0 = _pi_device *, TArgs = <_pi_device_info, unsigned long, long *, nullptr_t>]
auto printArgs(TArg0 arg, TArgs... args)
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_device *, Args = <_pi_device_info, unsigned long, long *, nullptr_t>]
void printArgs(Arg0 arg0, Args... args) {
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:183:47: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_device *, _pi_device_info, unsigned long, void *, unsigned long *), 24>::operator()<_pi_device *, _pi_device_info, unsigned long, _pi_platform **, nullptr_t>' requested here
    PiResult Err = (CallPi<FnType, FnOffset>::operator()(args...));
                                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/device_info.hpp:63:29: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPiAndCheck<_pi_result (*)(_pi_device *, _pi_device_info, unsigned long, void *, unsigned long *), 24, cl::sycl::runtime_error>::operator()<_pi_device *, _pi_device_info, unsigned long, _pi_platform **, nullptr_t>' requested here
    PI_CALL(piDeviceGetInfo)(dev, pi::cast<RT::PiDeviceInfo>(param),
                            ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/device_info.hpp:298:71: note: in instantiation of member function 'cl::sycl::detail::get_device_info<cl::sycl::platform, cl::sycl::info::device::platform>::get' requested here
    platform plt = get_device_info<platform, info::device::platform>::get(dev);
                                                                      ^
printArgs.cpp:4:6: note: candidate function [with TArg0 = _pi_device *, TArgs = <_pi_device_info, unsigned long, _pi_platform **, nullptr_t>]
auto printArgs(TArg0 arg, TArgs... args)
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_device *, Args = <_pi_device_info, unsigned long, _pi_platform **, nullptr_t>]
void printArgs(Arg0 arg0, Args... args) {
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/device_info.hpp:336:53: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_device *, _pi_device_info, unsigned long, void *, unsigned long *), 24>::operator()<_pi_device *, _pi_device_info, unsigned long, _pi_usm_capabilities *, nullptr_t>' requested here
    pi_result Err = PI_CALL_NOCHECK(piDeviceGetInfo)(
                                                    ^
printArgs.cpp:4:6: note: candidate function [with TArg0 = _pi_device *, TArgs = <_pi_device_info, unsigned long, _pi_usm_capabilities *, nullptr_t>]
auto printArgs(TArg0 arg, TArgs... args)
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_device *, Args = <_pi_device_info, unsigned long, _pi_usm_capabilities *, nullptr_t>]
void printArgs(Arg0 arg0, Args... args) {
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:183:47: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_kernel *), 320>::operator()<_pi_kernel *>' requested here
    PiResult Err = (CallPi<FnType, FnOffset>::operator()(args...));
                                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/kernel_impl.hpp:79:28: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPiAndCheck<_pi_result (*)(_pi_kernel *), 320, cl::sycl::runtime_error>::operator()<_pi_kernel *>' requested here
    PI_CALL(piKernelRetain)(MKernel);
                           ^
printArgs.cpp:4:6: note: candidate function [with TArg0 = _pi_kernel *, TArgs = <>]
auto printArgs(TArg0 arg, TArgs... args)
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_kernel *, Args = <>]
void printArgs(Arg0 arg0, Args... args) {
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:183:47: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_queue *, _pi_queue_info, unsigned long, void *, unsigned long *), 112>::operator()<_pi_queue *, _pi_queue_info, unsigned long, _pi_device **, nullptr_t>' requested here
    PiResult Err = (CallPi<FnType, FnOffset>::operator()(args...));
                                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/queue_impl.hpp:64:28: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPiAndCheck<_pi_result (*)(_pi_queue *, _pi_queue_info, unsigned long, void *, unsigned long *), 112, cl::sycl::runtime_error>::operator()<_pi_queue *, _pi_queue_info, unsigned long, _pi_device **, nullptr_t>' requested here
    PI_CALL(piQueueGetInfo)(m_CommandQueue, PI_QUEUE_INFO_DEVICE,
                           ^
printArgs.cpp:4:6: note: candidate function [with TArg0 = _pi_queue *, TArgs = <_pi_queue_info, unsigned long, _pi_device **, nullptr_t>]
auto printArgs(TArg0 arg, TArgs... args)
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_queue *, Args = <_pi_queue_info, unsigned long, _pi_device **, nullptr_t>]
void printArgs(Arg0 arg0, Args... args) {
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:183:47: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_queue *), 128>::operator()<_pi_queue *>' requested here
    PiResult Err = (CallPi<FnType, FnOffset>::operator()(args...));
                                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/queue_impl.hpp:69:27: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPiAndCheck<_pi_result (*)(_pi_queue *), 128, cl::sycl::runtime_error>::operator()<_pi_queue *>' requested here
    PI_CALL(piQueueRetain)(m_CommandQueue);
                          ^
printArgs.cpp:4:6: note: candidate function [with TArg0 = _pi_queue *, TArgs = <>]
auto printArgs(TArg0 arg, TArgs... args)
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_queue *, Args = <>]
void printArgs(Arg0 arg0, Args... args) {
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:183:47: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_queue *), 136>::operator()<_pi_queue *>' requested here
    PiResult Err = (CallPi<FnType, FnOffset>::operator()(args...));
                                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/queue_impl.hpp:75:30: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPiAndCheck<_pi_result (*)(_pi_queue *), 136, cl::sycl::runtime_error>::operator()<_pi_queue *>' requested here
      PI_CALL(piQueueRelease)(m_CommandQueue);
                             ^
printArgs.cpp:4:6: note: candidate function [with TArg0 = _pi_queue *, TArgs = <>]
auto printArgs(TArg0 arg, TArgs... args)
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_queue *, Args = <>]
void printArgs(Arg0 arg0, Args... args) {
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/queue_impl.hpp:163:39: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_context *, _pi_device *, unsigned long, _pi_queue **), 104>::operator()<_pi_context *, _pi_device *, unsigned long, _pi_queue **>' requested here
        PI_CALL_NOCHECK(piQueueCreate)(Context, Device, CreationFlags, &Queue);
                                      ^
printArgs.cpp:4:6: note: candidate function [with TArg0 = _pi_context *, TArgs = <_pi_device *, unsigned long, _pi_queue **>]
auto printArgs(TArg0 arg, TArgs... args)
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_context *, Args = <_pi_device *, unsigned long, _pi_queue **>]
void printArgs(Arg0 arg0, Args... args) {
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:150:7: error: call to 'printArgs' is ambiguous
      printArgs(args...);
      ^~~~~~~~~
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:183:47: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPi<_pi_result (*)(_pi_queue *), 120>::operator()<_pi_queue *>' requested here
    PiResult Err = (CallPi<FnType, FnOffset>::operator()(args...));
                                              ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/queue_impl.hpp:195:27: note: in instantiation of function template specialization 'cl::sycl::detail::pi::CallPiAndCheck<_pi_result (*)(_pi_queue *), 120, cl::sycl::runtime_error>::operator()<_pi_queue *>' requested here
    PI_CALL(piQueueFinish)(m_Queues[FreeQueueNum]);
                          ^
printArgs.cpp:4:6: note: candidate function [with TArg0 = _pi_queue *, TArgs = <>]
auto printArgs(TArg0 arg, TArgs... args)
     ^
/home/jan/software/sycl/intel/lib/clang/10.0.0/include/CL/sycl/detail/pi.hpp:114:6: note: candidate function [with Arg0 = _pi_queue *, Args = <>]
void printArgs(Arg0 arg0, Args... args) {
     ^
14 errors generated.

Tested with an up-to-date compiler (commit 97a199f).

@j-stephan j-stephan changed the title [SYCL] Call to 'printArgs' is ambigous [SYCL] Call to 'printArgs' is ambiguous Jan 21, 2020
@smaslov-intel smaslov-intel mentioned this issue Jan 28, 2020
Merged
smaslov-intel added a commit to smaslov-intel/llvm that referenced this issue Mar 22, 2020
@smaslov-intel
[SYCL] Use qualified name of template function to fix intel#1011
8367b75 
Signed-off-by: Sergey V Maslov <sergey.v.maslov@intel.com>
aelovikov-intel pushed a commit that referenced this issue Feb 17, 2023
@mdtoguchi
Update clang-offload-bundler usage (#1011)
10da9d1 
The commands for clang-offload-bundler have been updated to use -output
instead of -outputs.  Update test.cpp which uses clang-offload-bundler
directly
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[SYCL] Use qualified name of template function call smaslov-intel/llvm
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@bader @j-stephan @smaslov-intel