Add a test for a diagnostic special case added in r148439, as requested by
Francois Pichet.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148784 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaCXX/constant-expression-cxx11.cpp b/test/SemaCXX/constant-expression-cxx11.cpp
index e1b3781..21c2cb2 100644
--- a/test/SemaCXX/constant-expression-cxx11.cpp
+++ b/test/SemaCXX/constant-expression-cxx11.cpp
@@ -1027,3 +1027,22 @@
template<int x> int g(int c) { switch(c) { case f<x>(): return 1; } return 0; }
int gg(int c) { return g<4>(c); }
}
+
+namespace ConvertedConstantExpr {
+ extern int &m;
+ extern int &n;
+
+ constexpr int k = 4;
+ int &m = const_cast<int&>(k);
+
+ // If we have nothing more interesting to say, ensure we don't produce a
+ // useless note and instead just point to the non-constant subexpression.
+ enum class E {
+ em = m,
+ en = n, // expected-error {{not a constant expression}}
+ eo = (m +
+ n // expected-error {{not a constant expression}}
+ ),
+ eq = reinterpret_cast<int>((int*)0) // expected-error {{not a constant expression}} expected-note {{reinterpret_cast}}
+ };
+}