exception_wrapper::terminate_with

Summary: Enables terminating the process with the wrapped exception, as if calling folly::terminate_with polymorphically

Reviewed By: Gownta

Differential Revision: D32776269

fbshipit-source-id: d0d1ac374a38010bbe3ae608d22f7b2141d070e6

folly/ExceptionWrapper.h

@@ -470,6 +470,9 @@ class exception_wrapper final {
   //! \pre `bool(*this)`
   [[noreturn]] void throw_exception() const;
 
+  //! Terminates the process with the wrapped expression.
+  [[noreturn]] void terminate_with() const noexcept { throw_exception(); }
+
   //! Throws the wrapped expression nested into another exception.
   //! \pre `bool(*this)`
   //! \param ex Exception in *this will be thrown nested into ex;

folly/test/ExceptionWrapperTest.cpp

@@ -794,3 +794,9 @@ TEST(ExceptionWrapper, self_swap_test) {
   auto& ew2 = ew;
   ew = std::move(ew2); // should not crash
 }
+
+TEST(ExceptionWrapper, termiante_with_test) {
+  auto ew = make_exception_wrapper<int>(42);
+  EXPECT_DEATH(
+      try { ew.terminate_with(); } catch (...){}, "int");
+}