Add parens around template argument for cpp_new

Author: tim-dlang

src/cppconv/dwriter.d

@@ -4933,7 +4933,14 @@ void parseTreeToDCode(T)(ref CodeWriter code, DWriterData data, T tree, immutabl
         }
         else
         {
+            bool needsParens = !tree.childs[3].matchTreePattern!q{
+                NewTypeId([NameIdentifier | TypeKeyword], null)
+            };
+            if (needsParens)
+                code.write("(");
             parseTreeToDCode(code, data, tree.childs[3], condition, currentScope);
+            if (needsParens)
+                code.write(")");
         }
         parseTreeToDCode(code, data, tree.childs[$ - 1], condition, currentScope);
     }

tests/single/test371.cpp

@@ -0,0 +1,11 @@
+template<typename T>
+class C
+{
+};
+
+void f()
+{
+    C<int> *c = new C<int>();
+
+    int *p = new int();
+}

tests/single/test371.d

@@ -0,0 +1,18 @@
+module test371;
+
+import config;
+import cppconvhelpers;
+
+extern(C++, class) struct C(T)
+{
+}
+
+void f()
+{
+    import core.stdcpp.new_;
+
+    C!(int)* c = cpp_new!(C!(int))();
+
+    int* p = cpp_new!int();
+}
+