macros must be added to var_tbl

src/macro.c

@@ -21,7 +21,7 @@ pic_defmacro(pic_state *pic, const char *name, struct pic_proc *macro)
     pic_abort(pic, "macro table overflow");
   }
   pic->stx[idx] = pic_syntax_new_macro(pic, pic_intern_cstr(pic, name), macro);
-  xh_put(pic->global_tbl, name, ~idx);
+  xh_put(pic->var_tbl, name, ~idx);
   pic->xlen++;
 }