[cfe-commits] r123979 - in /cfe/trunk: lib/Sema/SemaOverload.cpp test/CXX/over/over.match/over.match.best/over.ics.rank/p3-0x.cpp

[Douglas Gregor]

Author: dgregor
Date: Fri Jan 21 10:48:38 2011
New Revision: 123979

URL: http://llvm.org/viewvc/llvm-project?rev=123979&view=rev
Log:
Add test for overload resolution's preference for binding an rvalue
reference to an rvalue rather than binding a const-qualified lvalue
reference to that rvalue.

Added:
    cfe/trunk/test/CXX/over/over.match/over.match.best/over.ics.rank/p3-0x.cpp
Modified:
    cfe/trunk/lib/Sema/SemaOverload.cpp

Modified: cfe/trunk/lib/Sema/SemaOverload.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaOverload.cpp?rev=123979&r1=123978&r2=123979&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaOverload.cpp (original)
+++ cfe/trunk/lib/Sema/SemaOverload.cpp Fri Jan 21 10:48:38 2011
@@ -2434,9 +2434,9 @@
     //      implicit object parameter of a non-static member function declared
     //      without a ref-qualifier, and S1 binds an rvalue reference to an
     //      rvalue and S2 binds an lvalue reference.
-    // FIXME: We don't know if we're dealing with the implicit object parameter,
-    // or if the member function in this case has a ref qualifier.
-    // (Of course, we don't have ref qualifiers yet.)
+    // FIXME: Rvalue references. We don't know if we're dealing with the 
+    // implicit object parameter, or if the member function in this case has a 
+    // ref qualifier. (Of course, we don't have ref qualifiers yet.)
     if (SCS1.RRefBinding != SCS2.RRefBinding)
       return SCS1.RRefBinding ? ImplicitConversionSequence::Better
                               : ImplicitConversionSequence::Worse;

Added: cfe/trunk/test/CXX/over/over.match/over.match.best/over.ics.rank/p3-0x.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CXX/over/over.match/over.match.best/over.ics.rank/p3-0x.cpp?rev=123979&view=auto
==============================================================================
--- cfe/trunk/test/CXX/over/over.match/over.match.best/over.ics.rank/p3-0x.cpp (added)
+++ cfe/trunk/test/CXX/over/over.match/over.match.best/over.ics.rank/p3-0x.cpp Fri Jan 21 10:48:38 2011
@@ -0,0 +1,35 @@
+// RUN: %clang_cc1 -std=c++0x -fsyntax-only -verify %s
+namespace std_example {
+  int i; 
+  int f1(); 
+  int&& f2(); 
+  int &g(const int &);
+  float &g(const int &&);
+  int &j = g(i); 
+  float &k = g(f1());
+  float &l = g(f2());
+
+  int &g2(const int &);
+  float &g2(int &&);
+  int &j2 = g2(i); 
+  float &k2 = g2(f1());
+  float &l2 = g2(f2());
+
+  // FIXME: We don't support ref-qualifiers set.
+#if 0
+  struct A { 
+    A& operator<<(int); 
+    void p() &; 
+    void p() &&;
+  };
+
+  A& operator<<(A&&, char); 
+  A() << 1; 
+  A() << 'c'; 
+  A a; 
+  a << 1; 
+  a << 'c'; 
+  A().p(); 
+  a.p();
+#endif
+}