change SHARED_BUF() to use _PyObject_IsUniquelyReferenced()

tom-pytel · tom-pytel · commit e5cd6e9d8956 · 2025-04-17T10:28:22.000-04:00
diff --git a/Modules/_io/bytesio.c b/Modules/_io/bytesio.c
@@ -70,7 +70,7 @@ check_exports(bytesio *self)
         return NULL; \
     }
 
-#define SHARED_BUF(self) (Py_REFCNT((self)->buf) > 1)
+#define SHARED_BUF(self) (!_PyObject_IsUniquelyReferenced((self)->buf))
 
 
 /* Internal routine to get a line from the buffer of a BytesIO

Original file line number	Diff line number	Diff line change
`@@ -70,7 +70,7 @@ check_exports(bytesio *self)`
`70`	`70`	`return NULL; \`
`71`	`71`	`}`
`72`	`72`
`73`		`-#define SHARED_BUF(self) (Py_REFCNT((self)->buf) > 1)`
	`73`	`+#define SHARED_BUF(self) (!_PyObject_IsUniquelyReferenced((self)->buf))`
`74`	`74`
`75`	`75`
`76`	`76`	`/* Internal routine to get a line from the buffer of a BytesIO`