Index: clang-tools-extra/trunk/clang-tidy/performance/ImplicitConversionInLoopCheck.h
===================================================================
--- clang-tools-extra/trunk/clang-tidy/performance/ImplicitConversionInLoopCheck.h
+++ clang-tools-extra/trunk/clang-tidy/performance/ImplicitConversionInLoopCheck.h
@@ -28,7 +28,7 @@
 
 private:
   void ReportAndFix(const ASTContext *Context, const VarDecl *VD,
-                    const CXXOperatorCallExpr *OperatorCall);
+                    const Expr *OperatorCall);
 };
 
 } // namespace performance
Index: clang-tools-extra/trunk/clang-tidy/performance/ImplicitConversionInLoopCheck.cpp
===================================================================
--- clang-tools-extra/trunk/clang-tidy/performance/ImplicitConversionInLoopCheck.cpp
+++ clang-tools-extra/trunk/clang-tidy/performance/ImplicitConversionInLoopCheck.cpp
@@ -28,7 +28,7 @@
 static bool IsNonTrivialImplicitCast(const Stmt *ST) {
   if (const auto *ICE = dyn_cast<ImplicitCastExpr>(ST)) {
     return (ICE->getCastKind() != CK_NoOp) ||
-           IsNonTrivialImplicitCast(ICE->getSubExpr());
+            IsNonTrivialImplicitCast(ICE->getSubExpr());
   }
   return false;
 }
@@ -39,7 +39,9 @@
   // conversion. The check on the implicit conversion is done in check() because
   // we can't access implicit conversion subnode via matchers: has() skips casts
   // and materialize! We also bind on the call to operator* to get the proper
-  // type in the diagnostic message.
+  // type in the diagnostic message. We use both cxxOperatorCallExpr for user
+  // defined operator and unaryOperator when the iterator is a pointer, like
+  // for arrays or std::array.
   //
   // Note that when the implicit conversion is done through a user defined
   // conversion operator, the node is a CXXMemberCallExpr, not a
@@ -47,10 +49,14 @@
   // cxxOperatorCallExpr() matcher.
   Finder->addMatcher(
       cxxForRangeStmt(hasLoopVariable(
-          varDecl(hasType(qualType(references(qualType(isConstQualified())))),
-                  hasInitializer(expr(hasDescendant(cxxOperatorCallExpr().bind(
-                                          "operator-call")))
-                                     .bind("init")))
+          varDecl(
+              hasType(qualType(references(qualType(isConstQualified())))),
+              hasInitializer(
+                  expr(anyOf(hasDescendant(
+                                 cxxOperatorCallExpr().bind("operator-call")),
+                             hasDescendant(unaryOperator(hasOperatorName("*"))
+                                               .bind("operator-call"))))
+                      .bind("init")))
               .bind("faulty-var"))),
       this);
 }
@@ -60,7 +66,7 @@
   const auto *VD = Result.Nodes.getNodeAs<VarDecl>("faulty-var");
   const auto *Init = Result.Nodes.getNodeAs<Expr>("init");
   const auto *OperatorCall =
-      Result.Nodes.getNodeAs<CXXOperatorCallExpr>("operator-call");
+      Result.Nodes.getNodeAs<Expr>("operator-call");
 
   if (const auto *Cleanup = dyn_cast<ExprWithCleanups>(Init))
     Init = Cleanup->getSubExpr();
@@ -79,7 +85,7 @@
 
 void ImplicitConversionInLoopCheck::ReportAndFix(
     const ASTContext *Context, const VarDecl *VD,
-    const CXXOperatorCallExpr *OperatorCall) {
+    const Expr *OperatorCall) {
   // We only match on const ref, so we should print a const ref version of the
   // type.
   QualType ConstType = OperatorCall->getType().withConst();
Index: clang-tools-extra/trunk/test/clang-tidy/performance-implicit-conversion-in-loop.cpp
===================================================================
--- clang-tools-extra/trunk/test/clang-tidy/performance-implicit-conversion-in-loop.cpp
+++ clang-tools-extra/trunk/test/clang-tidy/performance-implicit-conversion-in-loop.cpp
@@ -40,7 +40,7 @@
 template <typename T>
 class OperatorWrapper {
  public:
-  explicit OperatorWrapper(const T& t);
+  OperatorWrapper() = delete;
 };
 
 struct SimpleClass {
@@ -101,7 +101,7 @@
   // CHECK-MESSAGES: [[@LINE-1]]:{{[0-9]*}}: warning: the type of the loop variable 'foo' is different from the one returned by the iterator and generates an implicit conversion; you can either change the type to the matching one ('const SimpleClass &' but 'const auto&' is always a valid option) or remove the reference to make it explicit that you are creating a new value [performance-implicit-conversion-in-loop]
   // for (ImplicitWrapper<SimpleClass>& foo : SimpleView()) {}
   for (const ImplicitWrapper<SimpleClass> foo : SimpleView()) {}
-  for (ImplicitWrapper<SimpleClass>foo : SimpleView()) {}
+  for (ImplicitWrapper<SimpleClass> foo : SimpleView()) {}
 }
 
 void ImplicitSimpleClassRefIterator() {
@@ -109,7 +109,16 @@
   // CHECK-MESSAGES: [[@LINE-1]]:{{[0-9]*}}: warning: the type of the{{.*'const SimpleClass &'.*}}
   // for (ImplicitWrapper<SimpleClass>& foo : SimpleRefView()) {}
   for (const ImplicitWrapper<SimpleClass> foo : SimpleRefView()) {}
-  for (ImplicitWrapper<SimpleClass>foo : SimpleRefView()) {}
+  for (ImplicitWrapper<SimpleClass> foo : SimpleRefView()) {}
+}
+
+void ImplicitSimpleClassArray() {
+  SimpleClass array[5];
+  for (const ImplicitWrapper<SimpleClass>& foo : array) {}
+  // CHECK-MESSAGES: [[@LINE-1]]:{{[0-9]*}}: warning: the type of the{{.*'const SimpleClass &'.*}}
+  // for (ImplicitWrapper<SimpleClass>& foo : array) {}
+  for (const ImplicitWrapper<SimpleClass> foo : array) {}
+  for (ImplicitWrapper<SimpleClass> foo : array) {}
 }
 
 void ImplicitComplexClassIterator() {
@@ -117,15 +126,24 @@
   // CHECK-MESSAGES: [[@LINE-1]]:{{[0-9]*}}: warning: the type of the{{.*'const ComplexClass &'.*}}
   // for (ImplicitWrapper<ComplexClass>& foo : ComplexView()) {}
   for (const ImplicitWrapper<ComplexClass> foo : ComplexView()) {}
-  for (ImplicitWrapper<ComplexClass>foo : ComplexView()) {}
+  for (ImplicitWrapper<ComplexClass> foo : ComplexView()) {}
 }
 
 void ImplicitComplexClassRefIterator() {
+  ComplexClass array[5];
+  for (const ImplicitWrapper<ComplexClass>& foo : array) {}
+  // CHECK-MESSAGES: [[@LINE-1]]:{{[0-9]*}}: warning: the type of the{{.*'const ComplexClass &'.*}}
+  // for (ImplicitWrapper<ComplexClass>& foo : array) {}
+  for (const ImplicitWrapper<ComplexClass> foo : array) {}
+  for (ImplicitWrapper<ComplexClass> foo : array) {}
+}
+
+void ImplicitComplexClassArray() {
   for (const ImplicitWrapper<ComplexClass>& foo : ComplexRefView()) {}
   // CHECK-MESSAGES: [[@LINE-1]]:{{[0-9]*}}: warning: the type of the{{.*'const ComplexClass &'.*}}
   // for (ImplicitWrapper<ComplexClass>& foo : ComplexRefView()) {}
   for (const ImplicitWrapper<ComplexClass> foo : ComplexRefView()) {}
-  for (ImplicitWrapper<ComplexClass>foo : ComplexRefView()) {}
+  for (ImplicitWrapper<ComplexClass> foo : ComplexRefView()) {}
 }
 
 void OperatorSimpleClassIterator() {
@@ -133,7 +151,7 @@
   // CHECK-MESSAGES: [[@LINE-1]]:{{[0-9]*}}: warning: the type of the{{.*'const SimpleClass &'.*}}
   // for (OperatorWrapper<SimpleClass>& foo : SimpleView()) {}
   for (const OperatorWrapper<SimpleClass> foo : SimpleView()) {}
-  for (OperatorWrapper<SimpleClass>foo : SimpleView()) {}
+  for (OperatorWrapper<SimpleClass> foo : SimpleView()) {}
 }
 
 void OperatorSimpleClassRefIterator() {
@@ -141,7 +159,16 @@
   // CHECK-MESSAGES: [[@LINE-1]]:{{[0-9]*}}: warning: the type of the{{.*'const SimpleClass &'.*}}
   // for (OperatorWrapper<SimpleClass>& foo : SimpleRefView()) {}
   for (const OperatorWrapper<SimpleClass> foo : SimpleRefView()) {}
-  for (OperatorWrapper<SimpleClass>foo : SimpleRefView()) {}
+  for (OperatorWrapper<SimpleClass> foo : SimpleRefView()) {}
+}
+
+void OperatorSimpleClassArray() {
+  SimpleClass array[5];
+  for (const OperatorWrapper<SimpleClass>& foo : array) {}
+  // CHECK-MESSAGES: [[@LINE-1]]:{{[0-9]*}}: warning: the type of the{{.*'const SimpleClass &'.*}}
+  // for (OperatorWrapper<SimpleClass>& foo : array) {}
+  for (const OperatorWrapper<SimpleClass> foo : array) {}
+  for (OperatorWrapper<SimpleClass> foo : array) {}
 }
 
 void OperatorComplexClassIterator() {
@@ -149,7 +176,7 @@
   // CHECK-MESSAGES: [[@LINE-1]]:{{[0-9]*}}: warning: the type of the{{.*'const ComplexClass &'.*}}
   // for (OperatorWrapper<ComplexClass>& foo : ComplexView()) {}
   for (const OperatorWrapper<ComplexClass> foo : ComplexView()) {}
-  for (OperatorWrapper<ComplexClass>foo : ComplexView()) {}
+  for (OperatorWrapper<ComplexClass> foo : ComplexView()) {}
 }
 
 void OperatorComplexClassRefIterator() {
@@ -157,5 +184,14 @@
   // CHECK-MESSAGES: [[@LINE-1]]:{{[0-9]*}}: warning: the type of the{{.*'const ComplexClass &'.*}}
   // for (OperatorWrapper<ComplexClass>& foo : ComplexRefView()) {}
   for (const OperatorWrapper<ComplexClass> foo : ComplexRefView()) {}
-  for (OperatorWrapper<ComplexClass>foo : ComplexRefView()) {}
+  for (OperatorWrapper<ComplexClass> foo : ComplexRefView()) {}
+}
+
+void OperatorComplexClassArray() {
+  ComplexClass array[5];
+  for (const OperatorWrapper<ComplexClass>& foo : array) {}
+  // CHECK-MESSAGES: [[@LINE-1]]:{{[0-9]*}}: warning: the type of the{{.*'const ComplexClass &'.*}}
+  // for (OperatorWrapper<ComplexClass>& foo : array) {}
+  for (const OperatorWrapper<ComplexClass> foo : array) {}
+  for (OperatorWrapper<ComplexClass> foo : array) {}
 }