Ensure that we instantiate static reference data members of class templates

early, since their values can be used in constant expressions in C++11. For
odr-use checking, the opposite change is required, since references are
odr-used whether or not they satisfy the requirements for appearing in a
constant expression.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151881 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/test/SemaCXX/lambda-expressions.cpp b/test/SemaCXX/lambda-expressions.cpp
index 7e53754a52..9d3f9b857f 100644
--- a/test/SemaCXX/lambda-expressions.cpp
+++ b/test/SemaCXX/lambda-expressions.cpp
@@ -85,6 +85,13 @@ namespace ImplicitCapture {
 
     const int h = a; // expected-note {{declared}}
     []() { return h; }; // expected-error {{variable 'h' cannot be implicitly captured in a lambda with no capture-default specified}} expected-note {{lambda expression begins here}} 
+
+    // The exemption for variables which can appear in constant expressions
+    // applies only to objects (and not to references).
+    // FIXME: This might be a bug in the standard.
+    static int i;
+    constexpr int &ref_i = i; // expected-note {{declared}}
+    [] { return ref_i; }; // expected-error {{variable 'ref_i' cannot be implicitly captured in a lambda with no capture-default specified}} expected-note {{lambda expression begins here}}
   }
 }