Add hack to not use __make_integer_seq in fatal/type/sequence library

Reviewed By: jberdine

Differential Revision: D3549524

fbshipit-source-id: 7e3f8ff

infer/models/cpp/include/fatal/type/sequence.h

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2016 - present Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+// TODO (t12194697) remove this file once clang in infer is updated
+// Due to bug in clang, ASTExporter is unable to mangle type of
+// __make_integer_seq bug report (fixed in clang's trunk):
+// https://llvm.org/bugs/show_bug.cgi?id=28519
+// Code that triggers the problem comes from fatal library:
+// https://github.com/facebook/fatal/blob/b53547365245219f56d4c8395b8f9410da8705a3/fatal/type/sequence.h#L874
+// We can't change value of FATAL_IMPL_HAS_MAKE_INTEGER_SEQ directly
+// instead trick header to think that it's older clang and
+// __make_integer_seq doesn't exist
+#pragma push_macro("__clang_minor__")
+#undef __clang_minor__
+#define __clang_minor__ 7
+#include_next <fatal/type/sequence.h>
+#pragma pop_macro("__clang_minor__")