tsoding.tic-tac-toe-auto-deref/tcc.patch

--- ./tcc-0.9.27/tccgen.c	2017-12-17 15:27:05.000000000 +0700
+++ ./tcc-0.9.27-patched/tccgen.c	2022-06-10 23:53:17.869447393 +0700
@@ -18,6 +18,7 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include <assert.h>
 #include "tcc.h"
 
 /********************************************************/
@@ -5115,8 +5116,13 @@
         } else if (tok == '.' || tok == TOK_ARROW || tok == TOK_CDOUBLE) {
             int qualifiers;
             /* field */ 
-            if (tok == TOK_ARROW) 
+            if (tok == TOK_ARROW) {
                 indir();
+            } else if (tok == '.') {
+                if ((vtop->type.t & VT_BTYPE) == VT_PTR) {
+                    indir();
+                }
+            }
             qualifiers = vtop->type.t & (VT_CONSTANT | VT_VOLATILE);
             test_lvalue();
             gaddrof();