Index: lib/Format/TokenAnnotator.cpp
===================================================================
--- lib/Format/TokenAnnotator.cpp
+++ lib/Format/TokenAnnotator.cpp
@@ -305,7 +305,17 @@
     FormatToken *Left = CurrentToken->Previous;
     Left->ParentBracket = Contexts.back().ContextKind;
     FormatToken *Parent = Left->getPreviousNonComment();
-    bool StartsObjCMethodExpr =
+
+    // Cases where '>' is followed by '['.
+    // In C++, this can happen either in array of templates (foo<int>[10])
+    // or when array is a nested template type (unique_ptr<type1<type2>[]>).
+    bool CppArrayTemplates =
+        Style.Language == FormatStyle::LK_Cpp && Parent &&
+        Parent->is(TT_TemplateCloser) &&
+        (Contexts.back().CanBeExpression || Contexts.back().IsExpression ||
+         Contexts.back().InTemplateArgument);
+
+    bool StartsObjCMethodExpr = !CppArrayTemplates &&
         Style.Language == FormatStyle::LK_Cpp &&
         Contexts.back().CanBeExpression && Left->isNot(TT_LambdaLSquare) &&
         CurrentToken->isNot(tok::l_brace) &&
@@ -326,7 +336,7 @@
                  Parent->isOneOf(tok::l_brace, tok::comma)) {
         Left->Type = TT_JsComputedPropertyName;
       } else if (Style.Language == FormatStyle::LK_Proto ||
-                 (Parent &&
+                 (!CppArrayTemplates && Parent &&
                   Parent->isOneOf(TT_BinaryOperator, TT_TemplateCloser, tok::at,
                                   tok::comma, tok::l_paren, tok::l_square,
                                   tok::question, tok::colon, tok::kw_return,
Index: unittests/Format/FormatTest.cpp
===================================================================
--- unittests/Format/FormatTest.cpp
+++ unittests/Format/FormatTest.cpp
@@ -11501,6 +11501,26 @@
   verifyFormat("include \"a.td\"\ninclude \"b.td\"", Style);
 }
 
+TEST_F(FormatTest, ArrayOfTemplates) {
+  EXPECT_EQ("auto a = new unique_ptr<int>[10];",
+            format("auto a = new unique_ptr<int > [ 10];"));
+
+  FormatStyle Spaces = getLLVMStyle();
+  Spaces.SpacesInSquareBrackets = true;
+  EXPECT_EQ("auto a = new unique_ptr<int>[ 10 ];",
+            format("auto a = new unique_ptr<int > [10];", Spaces));
+}
+
+TEST_F(FormatTest, ArrayAsTemplateType) {
+  EXPECT_EQ("auto a = unique_ptr<Foo<Bar>[10]>;",
+            format("auto a = unique_ptr < Foo < Bar>[ 10]> ;"));
+
+  FormatStyle Spaces = getLLVMStyle();
+  Spaces.SpacesInSquareBrackets = true;
+  EXPECT_EQ("auto a = unique_ptr<Foo<Bar>[ 10 ]>;",
+            format("auto a = unique_ptr < Foo < Bar>[10]> ;", Spaces));
+}
+
 // Since this test case uses UNIX-style file path. We disable it for MS
 // compiler.
 #if !defined(_MSC_VER) && !defined(__MINGW32__)