From 2c9aa666a935ae061e46be7e3fb0fd7b98acc3e4 Mon Sep 17 00:00:00 2001
From: totaam <antoine@xpra.org>
Date: Wed, 25 Oct 2023 22:15:50 +0700
Subject: [PATCH] c_char_p needs bytes

---
 xpra/client/gl/backing.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xpra/client/gl/backing.py b/xpra/client/gl/backing.py
index 667c30f53b..e7f18ab04b 100644
--- a/xpra/client/gl/backing.py
+++ b/xpra/client/gl/backing.py
@@ -450,9 +450,9 @@ def gl_marker(self, *msg) -> None:
         if not GREMEDY_DEBUG:
             return
         try:
-            s = msg[0] % msg[1:]
+            s = strtobytes(msg[0] % msg[1:])
         except TypeError:
-            s = str(msg)
+            s = strtobytes(msg)
         from ctypes import c_char_p  # pylint: disable=import-outside-toplevel
         c_string = c_char_p(s)
         glStringMarkerGREMEDY(0, c_string)