From 0ff7954f9f09f80654ac91c16712154744a0dd2d Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Fri, 10 May 2019 22:04:40 -0700
Subject: [PATCH] [meta] Add hb_is_trivial

---
 src/hb-meta.hh   | 7 +++++++
 src/test-meta.cc | 4 ++++
 2 files changed, 11 insertions(+)

diff --git a/src/hb-meta.hh b/src/hb-meta.hh
index a1e93d75..df8ebd17 100644
--- a/src/hb-meta.hh
+++ b/src/hb-meta.hh
@@ -389,5 +389,12 @@ using hb_is_trivially_copyable= hb_bool_constant<
 >;
 #define hb_is_trivially_copyable(T) hb_is_trivially_copyable<T>::value
 
+template <typename T>
+using hb_is_trivial= hb_bool_constant<
+  hb_is_trivially_copyable (T) &&
+  hb_is_trivially_default_constructible (T)
+>;
+#define hb_is_trivial(T) hb_is_trivial<T>::value
+
 
 #endif /* HB_META_HH */
diff --git a/src/test-meta.cc b/src/test-meta.cc
index f03be306..ffd360b0 100644
--- a/src/test-meta.cc
+++ b/src/test-meta.cc
@@ -119,6 +119,10 @@ main (int argc, char **argv)
   static_assert (hb_is_trivially_copyable (X), "");
   static_assert (hb_is_trivially_copyable (Y), "");
 
+  static_assert (hb_is_trivial (int), "");
+  static_assert (hb_is_trivial (X), "");
+  static_assert (hb_is_trivial (Y), "");
+
   /* TODO Add more meaningful tests. */
 
   return 0;
-- 
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