AST: Properly calculate the linkage of a IndirectFieldDecl

getLVForNamespaceScopeDecl believed that it wasn't possible for it to
ever see an IndirectFieldDecl.  However, this can occur when determining
whether or not something is a redeclaration of a member of an anonymous
static union.

This fixes PR21858.

llvm-svn: 223975

1 files changed, 4 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/anonymous-union.cpp b/clang/test/SemaCXX/anonymous-union.cpp
index fde27b049d8..3b568fd8704 100644
--- a/clang/test/SemaCXX/anonymous-union.cpp
+++ b/clang/test/SemaCXX/anonymous-union.cpp
@@ -84,6 +84,10 @@ static union {
   float float_val2;
 };
 
+void PR21858() {
+  void int_val2();
+}
+
 void f() {
   int_val2 = 0;
   float_val2 = 0.0;