[llvm-bugs] [Bug 26497] New: [CUDA] call to pow is ambiguous

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=26497

            Bug ID: 26497
           Summary: [CUDA] call to pow is ambiguous
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: wujingyue at gmail.com
                CC: dgregor at apple.com, llvm-bugs at lists.llvm.org
    Classification: Unclassified

Is this intended? 

// pow.cu
using namespace std;                                                            

__global__ void foo(double* dd) {                                               
  dd[0] = pow(dd[1], dd[2]);                                                    
}

$ clang++ pow.cu -c

pow.cu:4:11: error: call to 'pow' is ambiguous
  dd[0] = pow(dd[1], dd[2]);
          ^~~
/usr/local/cuda/include/math_functions_dbl_ptx3.hpp:350:41: note: candidate
function
__MATH_FUNCTIONS_DBL_PTX3_DECL__ double pow(double a, double b)
                                        ^
/usr/local/google/home/jingyue/Work/llvm/install-git/bin/../lib/clang/3.9.0/include/__clang_cuda_cmath.h:186:19:
note: candidate function
__DEVICE__ double pow(double base, double exp) { return ::pow(base, exp); }
                  ^
/usr/local/google/home/jingyue/Work/llvm/install-git/bin/../lib/clang/3.9.0/include/__clang_cuda_cmath.h:187:19:
note: candidate function
__DEVICE__ double pow(double base, int iexp) { return ::powi(base, iexp); }
                  ^
/usr/local/google/home/jingyue/Work/llvm/install-git/bin/../lib/clang/3.9.0/include/__clang_cuda_cmath.h:184:18:
note: candidate function
__DEVICE__ float pow(float base, float exp) { return ::powf(base, exp); }
                 ^
/usr/local/google/home/jingyue/Work/llvm/install-git/bin/../lib/clang/3.9.0/include/__clang_cuda_cmath.h:185:18:
note: candidate function
__DEVICE__ float pow(float base, int iexp) { return ::powif(base, iexp); }
                 ^
1 error generated.

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