* src/otvalid/otvcommon.c (otv_Coverage_get_last): Guard `count'.
Problem reported by Marc Schönefeld <marc.schoenefeld@gmx.org>.
diff --git a/ChangeLog b/ChangeLog
index 03292f1..bed5802 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
2019-09-17 Werner Lemberg <wl@gnu.org>
+ * src/otvalid/otvcommon.c (otv_Coverage_get_last): Guard `count'.
+
+ Problem reported by Marc Schönefeld <marc.schoenefeld@gmx.org>.
+
+2019-09-17 Werner Lemberg <wl@gnu.org>
+
* src/sfnt/sfwoff2.c (woff2_open_font): Check table index.
Reported as
diff --git a/src/otvalid/otvcommn.c b/src/otvalid/otvcommn.c
index 5ed1723..3bd99f5 100644
--- a/src/otvalid/otvcommn.c
+++ b/src/otvalid/otvcommn.c
@@ -151,6 +151,9 @@
FT_UInt result = 0;
+ if ( !count )
+ return result;
+
switch ( CoverageFormat )
{
case 1:
