Look through using declarations when searching for allocation overloads.

llvm-svn: 90961

clang/lib/Sema/SemaExprCXX.cpp

@@ -601,7 +601,8 @@ bool Sema::FindAllocationOverload(SourceLocation StartLoc, SourceRange Range,
        Alloc != AllocEnd; ++Alloc) {
     // Even member operator new/delete are implicitly treated as
     // static, so don't use AddMemberCandidate.
-    if (FunctionDecl *Fn = dyn_cast<FunctionDecl>(*Alloc)) {
+    if (FunctionDecl *Fn = 
+          dyn_cast<FunctionDecl>((*Alloc)->getUnderlyingDecl())) {
       AddOverloadCandidate(Fn, Args, NumArgs, Candidates,
                            /*SuppressUserConversions=*/false);
       continue;

clang/test/SemaCXX/new-delete.cpp

@@ -202,3 +202,17 @@ struct X11 : X10 { // expected-error {{no suitable member 'operator delete' in '
 void f() {
   X11 x11; // expected-note {{implicit default destructor for 'struct X11' first required here}}
 }
+
+struct X12 {
+  void* operator new(size_t, void*);
+};
+
+struct X13 : X12 {
+  using X12::operator new;
+};
+
+static void* f(void* g)
+{
+    return new (g) X13();
+}
+