fix ffi.nullptr #2

Signed-off-by: Jianhui Zhao <[email protected]>
zhaojh329 · Jan 15, 2025 · 6c49e8f · 6c49e8f
1 parent e826b2e
commit 6c49e8f
Show file tree

Hide file tree

Showing 3 changed files with 10 additions and 1 deletion.
diff --git a/ffi.c b/ffi.c
@@ -417,6 +417,7 @@ static struct ctype *ctype_new(lua_State *L, bool keep)
     struct ctype *ct = lua_newuserdata(L, sizeof(struct ctype));
 
     ct->type = CTYPE_VOID;
+    ct->ft = &ffi_type_void;
     ct->is_const = false;
 
     luaL_getmetatable(L, CTYPE_MT);
@@ -2470,7 +2471,12 @@ static void createmetatable(lua_State *L, const char *name, const struct luaL_Re
 static void create_nullptr(lua_State *L)
 {
     struct ctype *ct = ctype_new(L, false);
-    ctype_to_ptr(L, ct);
+    struct ctype *ptr = ctype_new(L, false);
+
+    ct->type = CTYPE_PTR;
+    ct->is_const = false;
+    ct->ptr = ptr;
+
     cdata_ptr_set(cdata_new(L, ct, NULL), NULL);
 }
 

diff --git a/tests/libtest.so b/tests/libtest.so
diff --git a/tests/test.lua b/tests/test.lua
@@ -43,6 +43,9 @@ ffi.cdef([[
 ]])
 
 local tests = {
+    function()
+        print(ffi.nullptr)
+    end,
     function()
         local a = ffi.new('int [10]', {1, 2, 3})
         assert(a[0] == 1)