Mask out the two lower bits from the method list header entsize

boljonggo · Mar 6, 2013 · e81a174 · e81a174
1 parent 0a1e552
commit e81a174
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/Source/CDObjectiveC2Processor.m b/Source/CDObjectiveC2Processor.m
@@ -353,7 +353,8 @@ - (NSArray *)loadMethodsAtAddress:(uint64_t)address;
 
         struct cd_objc2_list_header listHeader;
 
-        listHeader.entsize = [cursor readInt32];
+        // See getEntsize() from http://www.opensource.apple.com/source/objc4/objc4-532.2/runtime/objc-runtime-new.h
+        listHeader.entsize = [cursor readInt32] & ~(uint32_t)3;
         listHeader.count   = [cursor readInt32];
         NSParameterAssert(listHeader.entsize == 3 * [self.machOFile ptrSize]);