When a conditional operator is an rvalue of class type, we need to

create a temporary copy of both the "true" and "false" results. Fixes
the Boost.Interprocess failures.

Daniel did all the hard work of tracking down the issue, I get to type
up the trivial fix for this horrible miscompile.

llvm-svn: 104184

1 files changed, 20 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/conditional-expr.cpp b/clang/test/SemaCXX/conditional-expr.cpp
index f1fe8ba79bb..a09ff2bd417 100644
--- a/clang/test/SemaCXX/conditional-expr.cpp
+++ b/clang/test/SemaCXX/conditional-expr.cpp
@@ -255,3 +255,23 @@ namespace test1 {
     foo(a ? a->x() : 0);
   }
 }
+
+namespace rdar7998817 {
+  class X { 
+    X(X&); // expected-note{{declared private here}}
+
+    struct ref { };
+
+  public:
+    X();
+    X(ref);
+    
+    operator ref();
+  };
+
+  void f(bool B) {
+    X x;
+    (void)(B? x // expected-error{{calling a private constructor of class 'rdar7998817::X'}}
+           : X());
+  }
+}