Fix PyStackRef_IsError for gil-enabled build

sergey-miryanov · sergey-miryanov · commit e0ff9f8ced2b · 2025-09-28T01:04:43.000+05:00
diff --git a/Include/internal/pycore_stackref.h b/Include/internal/pycore_stackref.h
@@ -293,7 +293,7 @@ PyStackRef_Unwrap(_PyStackRef ref)
 static inline bool
 PyStackRef_IsError(_PyStackRef ref)
 {
-    return ref.bits == Py_TAG_INVALID;
+    return (ref.bits & Py_TAG_BITS) == Py_TAG_INVALID;
 }
 
 static inline bool

Original file line number	Diff line number	Diff line change
`@@ -293,7 +293,7 @@ PyStackRef_Unwrap(_PyStackRef ref)`
`293`	`293`	`static inline bool`
`294`	`294`	`PyStackRef_IsError(_PyStackRef ref)`
`295`	`295`	`{`
`296`		`- return ref.bits == Py_TAG_INVALID;`
	`296`	`+ return (ref.bits & Py_TAG_BITS) == Py_TAG_INVALID;`
`297`	`297`	`}`
`298`	`298`
`299`	`299`	`static inline bool`