Revert r345562: "PR23833, DR2140: an lvalue-to-rvalue conversion on a glvalue of type"

This exposes a (known) CodeGen bug: it can't cope with emitting lvalue
expressions that denote non-odr-used but usable-in-constant-expression
variables. See PR39528 for a testcase.

Reverted for now until that issue can be fixed.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@346065 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 10 deletions

diff --git a/test/CXX/drs/dr21xx.cpp b/test/CXX/drs/dr21xx.cpp
index b111529b09..2522ff7dbd 100644
--- a/test/CXX/drs/dr21xx.cpp
+++ b/test/CXX/drs/dr21xx.cpp
@@ -19,16 +19,6 @@ namespace dr2120 { // dr2120: 7
   static_assert(!__is_standard_layout(E), "");
 }
 
-namespace dr2140 { // dr2140: 8
-#if __cplusplus >= 201103L
-  union U { int a; decltype(nullptr) b; };
-  constexpr int *test(U u) {
-    return u.b;
-  }
-  static_assert(!test({123}), "u.b should be valid even when b is inactive");
-#endif
-}
-
 namespace dr2180 { // dr2180: yes
   class A {
     A &operator=(const A &); // expected-note 0-2{{here}}