<p></p>
<p><b>@mmd-osm</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/osm2pgsql/pull/1153#discussion_r419673895">src/lua-utils.cpp</a>:</p>
<pre style='color:#555'>> @@ -158,11 +159,16 @@ static int pcall_error_traceback_handler(lua_State *lua_state)
 // wrapper function for lua_pcall to include a stack traceback
 int luaX_pcall(lua_State *lua_state, int narg, int nres)
 {
+// Lua 5.1 doesn't support luaL_traceback, unless LuaJIT is used
+#if LUA_VERSION_NUM < 502 && HAVE_LUAJIT == 0
</pre>
<p>I think I would change this to <code>#if LUA_VERSION_NUM < 502 && !defined(HAVE_LUAJIT)</code></p>

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