Silence some static asserts in ptx helpers (#1257) (#1284)

We only use if constexpr in C++17 so those functions are instantiated but never used. Fixes nvbug4384352 Co-authored-by: Jake Hemstad <[email protected]>
NVIDIA · Jan 17, 2024 · b592060 · b592060
1 parent 299eb62
commit b592060
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/libcudacxx/include/cuda/std/detail/libcxx/include/__cuda/ptx/ptx_helper_functions.h b/libcudacxx/include/cuda/std/detail/libcxx/include/__cuda/ptx/ptx_helper_functions.h
@@ -46,15 +46,19 @@ inline _LIBCUDACXX_DEVICE _CUDA_VSTD::uint64_t __as_ptr_gmem(const void* __ptr)
 template <typename _Tp>
 inline _LIBCUDACXX_DEVICE _CUDA_VSTD::uint32_t __as_b32(_Tp __val)
 {
+#if _LIBCUDACXX_STD_VER >= 17 && !defined(_LIBCUDACXX_HAS_NO_CXX14_CONSTEXPR)
   static_assert(sizeof(_Tp) == 4, "");
+#endif // _LIBCUDACXX_STD_VER >= 17  && !_LIBCUDACXX_HAS_NO_CXX14_CONSTEXPR
   // Consider using std::bitcast
   return *reinterpret_cast<_CUDA_VSTD::uint32_t*>(&__val);
 }
 
 template <typename _Tp>
 inline _LIBCUDACXX_DEVICE _CUDA_VSTD::uint64_t __as_b64(_Tp __val)
 {
+#if _LIBCUDACXX_STD_VER >= 17 && !defined(_LIBCUDACXX_HAS_NO_CXX14_CONSTEXPR)
   static_assert(sizeof(_Tp) == 8, "");
+#endif // _LIBCUDACXX_STD_VER >= 17 && !_LIBCUDACXX_HAS_NO_CXX14_CONSTEXPR
   // Consider using std::bitcast
   return *reinterpret_cast<_CUDA_VSTD::uint64_t*>(&__val);
 }