From dd421f5acd9016a2f88a09150904af463ad17815 Mon Sep 17 00:00:00 2001
From: Weiming Zhao <weimingz@codeaurora.org>
Date: Fri, 24 Jun 2016 18:02:27 +0000
Subject: [PATCH] [libcxx] guard throw with exception enabling check

Summary: this fixes build error when built with c++14 and no exceptions

Reviewers: rmaprath

Subscribers: weimingz, grandinj, rmaprath, cfe-commits

Differential Revision: http://reviews.llvm.org/D21673

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@273697 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/experimental/optional | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/experimental/optional b/include/experimental/optional
index a384882a1..3912438ec 100644
--- a/include/experimental/optional
+++ b/include/experimental/optional
@@ -517,7 +517,11 @@ public:
     constexpr value_type const& value() const
     {
         if (!this->__engaged_)
+#ifndef _LIBCPP_NO_EXCEPTIONS
             throw bad_optional_access();
+#else
+            assert(!"bad optional access");
+#endif
         return this->__val_;
     }
 
@@ -525,7 +529,11 @@ public:
     value_type& value()
     {
         if (!this->__engaged_)
+#ifndef _LIBCPP_NO_EXCEPTIONS
             throw bad_optional_access();
+#else
+            assert(!"bad optional access");
+#endif
         return this->__val_;
     }