From 48c2d371ea86ddc0cdad30601b7a0e118fa3ce70 Mon Sep 17 00:00:00 2001
From: stevens <lipengyu@kylinos.cn>
Date: Fri, 7 Aug 2026 23:34:10 +0800
Subject: [PATCH] gh-151524: Make it clearer that `_PyInstrumentation_DISABLE`
 is immortal in the code (GH-151525) (cherry picked from commit
 52bed26b79cc0333f1b26fd144488e4b38ebd0b5)

Co-authored-by: stevens <lipengyu@kylinos.cn>
---
 Python/instrumentation.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Python/instrumentation.c b/Python/instrumentation.c
index 51bcbfdb3b6c55b..646fc15c6872e56 100644
--- a/Python/instrumentation.c
+++ b/Python/instrumentation.c
@@ -989,8 +989,12 @@ call_one_instrument(
     if (res == NULL) {
         return -1;
     }
+    if (res == &_PyInstrumentation_DISABLE) {
+        assert(_Py_IsImmortal(res));
+        return 1;
+    }
     Py_DECREF(res);
-    return (res == &_PyInstrumentation_DISABLE);
+    return 0;
 }
 
 static const int8_t MOST_SIGNIFICANT_BITS[16] = {