commit 1dfc4ba88714d8ac9a85dba051cf94e57f7b3e04
author Aaron Ballman <aaron@aaronballman.com> Fri Jun 01 00:02:08 2012 +0000
committer Aaron Ballman <aaron@aaronballman.com> Fri Jun 01 00:02:08 2012 +0000
tree 391e32b18e04c9c1de5b1ff764b2aaae199ecf34
parent 396e0a8cfa3fbdd5fde83a19cc87b7af62cc1ddd

Anonymous union members within a struct are now properly handled as an unevaluated field in C++11 mode.  This fixes PR12866.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@157784 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Sema/SemaExprMember.cpp

diff --git a/lib/Sema/SemaExprMember.cpp b/lib/Sema/SemaExprMember.cpp
index 6af4040..f8bf908 100644
--- a/lib/Sema/SemaExprMember.cpp
+++ b/lib/Sema/SemaExprMember.cpp
@@ -115,7 +115,7 @@
     NamedDecl *D = *I;
 
     if (D->isCXXInstanceMember()) {
-      if (dyn_cast<FieldDecl>(D))
+      if (dyn_cast<FieldDecl>(D) || dyn_cast<IndirectFieldDecl>(D))
         isField = true;
 
       CXXRecordDecl *R = cast<CXXRecordDecl>(D->getDeclContext());

test/SemaCXX/anonymous-union-cxx11.cpp

diff --git a/test/SemaCXX/anonymous-union-cxx11.cpp b/test/SemaCXX/anonymous-union-cxx11.cpp
new file mode 100644
index 0000000..8e682eb
--- /dev/null
+++ b/test/SemaCXX/anonymous-union-cxx11.cpp
@@ -0,0 +1,13 @@
+// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify -pedantic %s
+
+namespace PR12866 {
+  struct bar {
+    union {
+      int member;
+    };
+  };
+
+  void foo( void ) {
+    (void)sizeof(bar::member);
+  }
+}