Type Traits/`void_t`: Add missing default for the first type parameter.
Bug
MODIFY
thrust/type_traits/void_t.h
thrust/type_traits/void_t.h
@@ -41,7 +41,7 @@ template <typename... Ts> using void_t = typename voider<Ts...>::type;
#else // Older than C++11.
template <
- typename T
+ typename = void
, typename = void
, typename = void
, typename = void

Type Traits/`void_t`: Add missing default for the first type parameter.

Bug 2379510