python
diff --git a/‎Misc/NEWS.d/next/Core_and_Builtins/2026-06-16-13-50-13.gh-issue-151377.mCqrGg.rst‎
Lines changed: 0 additions & 2 deletions b/‎Misc/NEWS.d/next/Core_and_Builtins/2026-06-16-13-50-13.gh-issue-151377.mCqrGg.rst‎
Lines changed: 0 additions & 2 deletions
diff --git a/‎Python/instrumentation.c‎
Lines changed: 5 additions & 2 deletions b/‎Python/instrumentation.c‎
Lines changed: 5 additions & 2 deletions
@@ -989,9 +989,12 @@ call_one_instrument(
     if (res == NULL) {
         return -1;
     }
-    int is_disable = (res == &_PyInstrumentation_DISABLE);
+    if (res == &_PyInstrumentation_DISABLE) {
+        assert(_Py_IsImmortal(res));
+        return 1;
+    }
     Py_DECREF(res);
-    return is_disable;
+    return 0;
 }
 
 static const int8_t MOST_SIGNIFICANT_BITS[16] = {
Original file line number	Diff line number	Diff line change
`@@ -989,9 +989,12 @@ call_one_instrument(`
`989`	`989`	`if (res == NULL) {`
`990`	`990`	`return -1;`
`991`	`991`	`}`
`992`		`- int is_disable = (res == &_PyInstrumentation_DISABLE);`
	`992`	`+ if (res == &_PyInstrumentation_DISABLE) {`
	`993`	`+ assert(_Py_IsImmortal(res));`
	`994`	`+ return 1;`
	`995`	`+ }`
`993`	`996`	`Py_DECREF(res);`
`994`		`- return is_disable;`
	`997`	`+ return 0;`
`995`	`998`	`}`
`996`	`999`
`997`	`1000`	`static const int8_t MOST_SIGNIFICANT_BITS[16] = {`