When performing name lookup for the allocation or deallocation
operators, make sure that the implicitly-declared global new and
delete operators are always available. Fixes PR5904.

llvm-svn: 99382
diff --git a/clang/test/SemaCXX/new-delete-predefined-decl-2.cpp b/clang/test/SemaCXX/new-delete-predefined-decl-2.cpp
new file mode 100644
index 0000000..981476d
--- /dev/null
+++ b/clang/test/SemaCXX/new-delete-predefined-decl-2.cpp
@@ -0,0 +1,13 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -DQUALIFIED -fsyntax-only -verify %s
+
+// PR5904
+void f0(int *ptr) {
+#ifndef QUALIFIED
+  operator delete(ptr);
+#endif
+}
+
+void f1(int *ptr) {
+  ::operator delete[](ptr);
+}