diff --git a/tools/gdb_bthread_stack.py b/tools/gdb_bthread_stack.py
index bb5001184c..acb6628a4e 100644
--- a/tools/gdb_bthread_stack.py
+++ b/tools/gdb_bthread_stack.py
@@ -74,15 +74,16 @@ def get_all_bthreads(total):
     global bthreads
     bthreads = []
     count = 0
-    groups = int(gdb.parse_and_eval("butil::ResourcePool<bthread::TaskMeta>::_ngroup")["val"])
+    groups = int(gdb.parse_and_eval("(size_t)'butil::ResourcePool<bthread::TaskMeta>::_ngroup'"))
     for group in range(groups):
         blocks = int(gdb.parse_and_eval("(unsigned long)(*((*((('butil::static_atomic<butil::ResourcePool<bthread::TaskMeta>::BlockGroup*>' *)('butil::ResourcePool<bthread::TaskMeta>::_block_groups')) + {})).val)).nblock".format(group)))
         for block in range(blocks):
-            items = int(gdb.parse_and_eval("(*(*((butil::ResourcePool<bthread::TaskMeta>::Block**)((*((*((('butil::static_atomic<butil::ResourcePool<bthread::TaskMeta>::BlockGroup*>' *)('butil::ResourcePool<bthread::TaskMeta>::_block_groups')) + {})).val)).blocks) + {}))).nitem".format(group, block)))
+            items = int(gdb.parse_and_eval("(*(*(('butil::ResourcePool<bthread::TaskMeta>::Block' **)((*((*((('butil::static_atomic<butil::ResourcePool<bthread::TaskMeta>::BlockGroup*>' *)('butil::ResourcePool<bthread::TaskMeta>::_block_groups'))+ {})).val)).blocks) + {}))).nitem".format(group, block)))
             for item in range(items):
-                task_meta = gdb.parse_and_eval("*(('bthread::TaskMeta' *)((*(*((butil::ResourcePool<bthread::TaskMeta>::Block**)((*((*((('butil::static_atomic<butil::ResourcePool<bthread::TaskMeta>::BlockGroup*>' *)('butil::ResourcePool<bthread::TaskMeta>::_block_groups')) + {})).val)).blocks) + {}))).items) + {})".format(group, block, item))
+                task_meta = gdb.parse_and_eval("*(('bthread::TaskMeta' *)((*(*(('butil::ResourcePool<bthread::TaskMeta>::Block' **)((*((*((('butil::static_atomic<butil::ResourcePool<bthread::TaskMeta>::BlockGroup*>' *)('butil::ResourcePool<bthread::TaskMeta>::_block_groups')) + {})).val)).blocks) + {}))).items) + {})".format(group, block, item))
                 version_tid = (int(task_meta["tid"]) >> 32)
-                version_butex = gdb.parse_and_eval("*(uint32_t *){}".format(task_meta["version_butex"]))
+                version_butex = gdb.parse_and_eval(
+                    "*(uint32_t *){}".format(task_meta["version_butex"]))
                 if version_tid == int(version_butex) and int(task_meta["attr"]["stack_type"]) != 0:
                     bthreads.append(task_meta)
                     count += 1