bug fix on select into

sdk/Makefile

@@ -1,4 +1,4 @@
 example:
-    g++-9 -shared -fPIC example.cpp aquery_mem.cpp -fno-semantic-interposition -Ofast -march=native -flto --std=c++1z -o ../test.so
+	$(CXX) -shared -fPIC example.cpp aquery_mem.cpp -fno-semantic-interposition -Ofast -march=native -flto --std=c++1z -o ../test.so
 
 all: example

sdk/aquery.h

@@ -75,7 +75,7 @@ extern void register_memory(void* ptr, deallocator_t deallocator);
 __AQEXPORT__(void) init_session(Context* cxt);
 
 #define __AQ_NO_SESSION__ __AQEXPORT__(void) init_session(Context*) {}
-void* memcpy(void*, void*, unsigned long long);
+void* memcpy(void*, const void*, unsigned long long);
 struct ColRef_storage {
 	void* container;
 	unsigned int capacity, size;
@@ -86,4 +86,4 @@ struct ColRef_storage {
 		memcpy(this, &vt, sizeof(ColRef_storage));
 	}
 };
-#endif
+#endif