Fix `optional::emplace`

Currently we cannot use `optional::value` on device, as that might throw if there is no value stored.

However, in `emplace` we know that there must be a value stored, as we have just created it.

Consequently, just return `this->_m_value`

1 files changed, 2 insertions, 2 deletions

diff --git a/thrust/optional.h b/thrust/optional.h
index 52008e4f..5850b6ea 100644
--- a/thrust/optional.h
+++ b/thrust/optional.h
@@ -1580,7 +1580,7 @@ public:
 
     *this = nullopt;
     this->construct(std::forward<Args>(args)...);
-    return value();
+    return this->m_value;
   }
 
   /// \group emplace
@@ -1594,7 +1594,7 @@ public:
   emplace(std::initializer_list<U> il, Args &&... args) {
     *this = nullopt;
     this->construct(il, std::forward<Args>(args)...);
-    return value();
+    return this->m_value;
   }
 
   /// Swaps this optional with the other.