> compile NEMU

221220000 张三
Linux zzy 5.15.146.1-microsoft-standard-WSL2 #1 SMP Thu Jan 11 04:09:03 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
 17:14:54 up 19:40,  2 users,  load average: 1.17, 0.49, 0.29

nemu/src/monitor/sdb/sdb.c

@@ -171,6 +171,7 @@ void sdb_set_batch_mode() {
 }
 
 int test_expr() {
+  init_regex();
   uint32_t expect, res;
   char buf[65536] = {0};
   if (scanf("%"PRIu32" %s", &expect, buf));