Whats the best way to have a static assert for the NVCC compiler inside a struct which is used for compile time settings:
The following works mostly but sometimes NVCC produces bullshit error messages, and does not compile even if it should!
template<int A, int B>
struct Settings{
static const int a = A;
static const int b = B;
STATIC_ASSERT(a == 15);
}
typedef Settings<15,5> set1; // Comment this out and it works....
template<int A, int B>
struct Settings2{
static const int a = A;
static const int b = B;
STATIC_ASSERT(a % b == 0);
}
typedef Settings<10,5> set2;
The static assert does not work, I dont know but there is a CUDA Compiler BUG which tells me when I compile it throws the STATIC_ASSERT(a == 15); even if IT should COMPILE because the code above is correct, if I comment (A) out then it suddenly works, I use the STATIC_ASSERT from Thrust which is basically taken from Boost:
#define JOIN( X, Y ) DO_JOIN( X, Y )
#define DO_JOIN( X, Y ) DO_JOIN2(X,Y)
#define DO_JOIN2( X, Y ) X##Y
namespace staticassert {
// HP aCC cannot deal with missing names for template value parameters
template <bool x> struct STATIC_ASSERTION_FAILURE;
template <> struct STATIC_ASSERTION_FAILURE<true> { enum { value = 1 }; };
// HP aCC cannot deal with missing names for template value parameters
template<int x> struct static_assert_test{};
};
// XXX nvcc 2.3 can't handle STATIC_ASSERT
#if defined(__CUDACC__) && (CUDA_VERSION > 100)
#error your version number of cuda is not 2 digits!
#endif
#if defined(__CUDACC__) /* && (CUDA_VERSION < 30)*/
#define STATIC_ASSERT(开发者_C百科 B ) typedef staticassert::static_assert_test<sizeof(staticassert::STATIC_ASSERTION_FAILURE< (bool)( (B) ) >) > JOIN(thrust_static_assert_typedef_, __LINE__)
#define STATIC_ASSERT2(B,COMMENT) STATIC_ASSERT(B)
#else
#define STATIC_ASSERT2(B,COMMENT) \
typedef staticassert::static_assert_test< \
sizeof(staticassert::STATIC_ASSERTION_FAILURE< (bool)( (B) ) >)>\
JOIN(thrust_static_assert_typedef_, JOIN(__LINE__, COMMENT ))
#define STATIC_ASSERT( B ) \
typedef staticassert::static_assert_test<sizeof(staticassert::STATIC_ASSERTION_FAILURE< (bool)( (B) ) >) > JOIN(thrust_static_assert_typedef_, __LINE__)
#endif // NVCC 2.3
Did anybody experience the same problem?
Thanks for any comments!
After adding the missing semicolons after each struct
definition, your code compiles with no warnings or errors for me. System details:
harrism$ nvcc --version
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2010 NVIDIA Corporation
Built on Thu_Nov_11_15:26:50_PST_2010
Cuda compilation tools, release 3.2, V0.2.1221
harrism$ g++ --version
i686-apple-darwin10-g++-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3)
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