diff -r 9289c4214a35 -r 25db2c8f3cf8 src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot-layout.h
--- a/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot-layout.h	Wed May 30 08:10:41 2018 -0700
+++ b/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-ot-layout.h	Wed May 30 12:20:00 2018 -0700
@@ -38,6 +38,7 @@
 HB_BEGIN_DECLS
 
 
+#define HB_OT_TAG_BASE HB_TAG('B','A','S','E')
 #define HB_OT_TAG_GDEF HB_TAG('G','D','E','F')
 #define HB_OT_TAG_GSUB HB_TAG('G','S','U','B')
 #define HB_OT_TAG_GPOS HB_TAG('G','P','O','S')
@@ -316,6 +317,22 @@
                               unsigned int *range_end          /* OUT.  May be NULL */);
 
 
+/*
+ * BASE
+ */
+#if 0
+
+#define HB_OT_TAG_BASE_HANG HB_TAG('h','a','n','g')
+#define HB_OT_TAG_BASE_ICFB HB_TAG('i','c','f','b')
+#define HB_OT_TAG_BASE_ICFT HB_TAG('i','c','f','t')
+#define HB_OT_TAG_BASE_IDEO HB_TAG('i','d','e','o')
+#define HB_OT_TAG_BASE_IDTB HB_TAG('i','d','t','b')
+#define HB_OT_TAG_BASE_MATH HB_TAG('m','a','t','h')
+#define HB_OT_TAG_BASE_ROMN HB_TAG('r','o','m','n')
+
+#endif
+
+
 HB_END_DECLS
 
 #endif /* HB_OT_LAYOUT_H */