[instancer] When partial instancing, subset LigCaretList after VarStore instantiation

src/OT/Layout/GDEF/GDEF.hh

@@ -664,7 +664,6 @@ struct GDEFVersion1_2
     out->version.minor = version.minor;
     bool subset_glyphclassdef = out->glyphClassDef.serialize_subset (c, glyphClassDef, this, nullptr, false, true);
     bool subset_attachlist = out->attachList.serialize_subset (c, attachList, this);
-    bool subset_ligcaretlist = out->ligCaretList.serialize_subset (c, ligCaretList, this);
     bool subset_markattachclassdef = out->markAttachClassDef.serialize_subset (c, markAttachClassDef, this, nullptr, false, true);
 
     bool subset_markglyphsetsdef = false;
@@ -702,6 +701,7 @@ struct GDEFVersion1_2
         subset_varstore = out->varStore.serialize_subset (c, varStore, this, c->plan->gdef_varstore_inner_maps.as_array ());
     }
 
+
     if (subset_varstore)
     {
       out->version.minor = 3;
@@ -713,6 +713,8 @@ struct GDEFVersion1_2
       c->serializer->revert (snapshot_version0);
     }
 
+    bool subset_ligcaretlist = out->ligCaretList.serialize_subset (c, ligCaretList, this);
+
     return_trace (subset_glyphclassdef || subset_attachlist ||
 		  subset_ligcaretlist || subset_markattachclassdef ||
 		  (out->version.to_int () >= 0x00010002u && subset_markglyphsetsdef) ||

test/subset/data/tests/gdef_partial_instance.tests

@@ -0,0 +1,11 @@
+FONTS:
+AnekBangla-subset.ttf
+
+PROFILES:
+default.txt
+
+SUBSETS:
+*
+
+INSTANCES:
+wght=300

test/subset/meson.build

@@ -75,6 +75,7 @@ if get_option('experimental_api')
     'update_def_wght',
     'empty_region_vardata',
     'feature_variations_partial_instance',
+    'gdef_partial_instance',
     ]
 endif