From 3e1c524e64c9829234f9c89f99a31af3aabe3ab8 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Tue, 10 Jan 2023 17:18:34 -0700
Subject: [PATCH] [bit-page] Comment

---
 src/hb-bit-page.hh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/hb-bit-page.hh b/src/hb-bit-page.hh
index 11987054f..222660f64 100644
--- a/src/hb-bit-page.hh
+++ b/src/hb-bit-page.hh
@@ -34,7 +34,8 @@
 /* Compiler-assisted vectorization. */
 
 /* Type behaving similar to vectorized vars defined using __attribute__((vector_size(...))),
- * basically a fixed-size bitset. */
+ * basically a fixed-size bitset. We can't use the compiler type because hb_vector_t cannot
+ * guarantee alignment requirements. */
 template <typename elt_t, unsigned int byte_size>
 struct hb_vector_size_t
 {