[except.nested]

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@104850 91177308-0d34-0410-b5e6-96231b3b80d8

test/language.support/support.exception/except.nested/rethrow_if_nested.pass.cpp

@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <exception>
+
+// class nested_exception;
+
+// template <class E> void rethrow_if_nested(const E& e);
+
+#include <exception>
+#include <cstdlib>
+#include <cassert>
+
+class A
+{
+    int data_;
+public:
+    explicit A(int data) : data_(data) {}
+
+    friend bool operator==(const A& x, const A& y) {return x.data_ == y.data_;}
+};
+
+class B
+    : public std::nested_exception
+{
+    int data_;
+public:
+    explicit B(int data) : data_(data) {}
+    B(const B& b) : data_(b.data_) {}
+
+    friend bool operator==(const B& x, const B& y) {return x.data_ == y.data_;}
+};
+
+int main()
+{
+    {
+        try
+        {
+            A a(3);
+            std::rethrow_if_nested(a);
+            assert(true);
+        }
+        catch (...)
+        {
+            assert(false);
+        }
+    }
+    {
+        try
+        {
+            throw B(5);
+        }
+        catch (const B& b0)
+        {
+            try
+            {
+                B b = b0;
+                std::rethrow_if_nested(b);
+                assert(false);
+            }
+            catch (const B& b)
+            {
+                assert(b == B(5));
+            }
+        }
+    }
+}