Index: lib/Sema/SemaOverload.cpp
===================================================================
--- lib/Sema/SemaOverload.cpp
+++ lib/Sema/SemaOverload.cpp
@@ -6429,7 +6429,12 @@
         if (Expr *E = Args[0]) {
           // Use the explicit base to restrict the lookup:
           ObjectType = E->getType();
-          ObjectClassification = E->Classify(Context);
+          // Pointers in the object arguments are implicitly dereferenced, so we
+          // always classify them as l-values.
+          if (!ObjectType.isNull() && ObjectType->isPointerType())
+            ObjectClassification = Expr::Classification::makeSimpleLValue();
+          else
+            ObjectClassification = E->Classify(Context);
         } // .. else there is an implicit base.
         FunctionArgs = Args.slice(1);
       }
Index: test/CodeCompletion/signatures-crash.cpp
===================================================================
--- /dev/null
+++ test/CodeCompletion/signatures-crash.cpp
@@ -0,0 +1,15 @@
+struct map {
+  void find(int);
+  void find();
+};
+
+int main() {
+  map *m;
+  m->find(10);
+  // RUN: %clang_cc1 -fsyntax-only -code-completion-at=%s:8:11 %s -o - | FileCheck %s
+  // CHECK: find
+
+  // Also check when the lhs is an explicit pr-value.
+  (m+0)->find(10);
+  // RUN: %clang_cc1 -fsyntax-only -code-completion-at=%s:13:15 %s -o - | FileCheck %s
+}