--- icu.orig/source/layout/CoverageTables.cpp 2007-01-09 12:57:41.000000000 +0000
+++ icu/source/layout/CoverageTables.cpp 2007-01-09 12:59:09.000000000 +0000
@@ -44,6 +44,11 @@
le_uint16 count = SWAPW(glyphCount);
le_uint8 bit = OpenTypeUtilities::highBit(count);
le_uint16 power = 1 << bit;
+
+ if (count == 0) {
+ return -1;
+ }
+
le_uint16 extra = count - power;
le_uint16 probe = power;
le_uint16 index = 0;