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#ifndef BOOST_TEST_DYN_LINK
#define BOOST_TEST_DYN_LINK
#endif
#define BOOST_TEST_NO_MAIN
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <boost/test/unit_test.hpp>
#include "ext/luawrapper/include/LuaContext.hpp"
BOOST_AUTO_TEST_SUITE(test_lua_lightuserdata)
BOOST_AUTO_TEST_CASE(test_registerFunction)
{
// This test comes from luawrapper/tests/custom_types.cc, TEST(CustomTypes, MemberFunctions).
// In some versions of luajit, as shipped by Debian Buster and others, Lua lightuserdata
// objects can only hold 47 bits of the address of a pointer. If the kernel puts our heap
// above that 47 bit limit, this test crashes. Many arm64 Linux kernels are known to put
// the heap in that problematic area.
struct Object
{
void increment() { ++value; }
int value;
};
LuaContext context;
context.registerFunction("increment", &Object::increment);
context.writeVariable("obj", Object{10});
context.executeCode("obj:increment()");
BOOST_CHECK_EQUAL(11, context.readVariable<Object>("obj").value);
}
BOOST_AUTO_TEST_SUITE_END()
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