commit 8f5d8b155c0cbf9f61cf6a23d73dbc7130df21e0
author Behdad Esfahbod <behdad@behdad.org> Fri Oct 09 17:58:57 2020 -0600
committer Behdad Esfahbod <behdad@behdad.org> Fri Oct 09 22:27:55 2020 -0600
tree 3e85e31d035e3b7c380812ffd40589127697454a
parent 3b64122a7fd5218df6e0f8b345becb7ff73510f7

[buffer] Buffer start <= end <= len requirement in (de-)serialize

src/hb-buffer-serialize.cc

diff --git a/src/hb-buffer-serialize.cc b/src/hb-buffer-serialize.cc
index 37bdcd6..aac2eb1 100644
--- a/src/hb-buffer-serialize.cc
+++ b/src/hb-buffer-serialize.cc
@@ -464,7 +464,8 @@
                             hb_buffer_serialize_format_t format,
                             hb_buffer_serialize_flags_t flags)
 {
-  assert (start <= end && end <= buffer->len);
+  end = hb_clamp (end, start, buffer->len);
+  start = hb_min (start, end);
 
   unsigned int sconsumed;
   if (!buf_consumed)
@@ -561,7 +562,8 @@
                              hb_buffer_serialize_format_t format,
                              hb_buffer_serialize_flags_t flags)
 {
-  assert (start <= end && end <= buffer->len);
+  end = hb_clamp (end, start, buffer->len);
+  start = hb_min (start, end);
 
   unsigned int sconsumed;
   if (!buf_consumed)