From 4e6026efe637c1eda57ffc1d7fd8b18f58571ae7 Mon Sep 17 00:00:00 2001
From: xuxingliang <xuxingliang@xiaomi.com>
Date: Wed, 16 Oct 2024 12:23:20 +0800
Subject: [PATCH] gdb/dmesg: replace non-printable NULL terminator

Signed-off-by: xuxingliang <xuxingliang@xiaomi.com>
---
 tools/gdb/nuttxgdb/dmesg.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/gdb/nuttxgdb/dmesg.py b/tools/gdb/nuttxgdb/dmesg.py
index 1c75aace089..8d4036b1152 100644
--- a/tools/gdb/nuttxgdb/dmesg.py
+++ b/tools/gdb/nuttxgdb/dmesg.py
@@ -44,5 +44,8 @@ class Dmesg(gdb.Command):
 
         inf = gdb.selected_inferior()
         buf = bytes(inf.read_memory(rl_head["rl_buffer"], rl_bufsize))
+        buf = buf.replace(
+            b"\0", "␀".encode("utf-8")
+        )  # NULL is valid utf-8 but not printable
         gdb.write(buf.decode("utf-8", errors="replace"))
         gdb.write("\n")