diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -1722,6 +1722,11 @@
           return false;
         }
 
+        // This is the default value of a non-template type parameter, so treat
+        // it as an expression.
+        if (Contexts.back().ContextKind == tok::less)
+          return true;
+
         Tok = Tok->MatchingParen;
         if (!Tok)
           return false;
diff --git a/clang/unittests/Format/TokenAnnotatorTest.cpp b/clang/unittests/Format/TokenAnnotatorTest.cpp
--- a/clang/unittests/Format/TokenAnnotatorTest.cpp
+++ b/clang/unittests/Format/TokenAnnotatorTest.cpp
@@ -253,6 +253,14 @@
                     "};");
   ASSERT_EQ(Tokens.size(), 30u) << Tokens;
   EXPECT_TOKEN(Tokens[14], tok::ampamp, TT_BinaryOperator);
+
+  Tokens = annotate("template <bool B = C && D> struct S {};");
+  ASSERT_EQ(Tokens.size(), 15u) << Tokens;
+  EXPECT_TOKEN(Tokens[6], tok::ampamp, TT_BinaryOperator);
+
+  Tokens = annotate("template <typename T, bool B = C && D> struct S {};");
+  ASSERT_EQ(Tokens.size(), 18u) << Tokens;
+  EXPECT_TOKEN(Tokens[9], tok::ampamp, TT_BinaryOperator);
 }
 
 TEST_F(TokenAnnotatorTest, UnderstandsUsesOfPlusAndMinus) {