fixup! pythongh-119333: Back up exception before calling PyContext_WatchCallback

Author: rhansen

Doc/c-api/contextvars.rst

@@ -135,11 +135,11 @@ Context object management functions:
    Otherwise, the callback is invoked before the deactivation of *ctx* as the current context
    and the restoration of the previous contex object for the current thread.
 
-   If the callback raises an exception it will be ignored.
-
    Any pending exception is cleared before the callback is called and restored
    after the callback returns.
 
+   If the callback raises an exception it will be ignored.
+
    .. versionadded:: 3.14
 
 

Include/cpython/context.h

@@ -38,10 +38,10 @@ typedef enum {
  * The callback is invoked with the event and a reference to
  * the context after its entered and before its exited.
  *
- * If the callback raises an exception it will be ignored.
- *
  * Any pending exception is cleared before the callback is called and restored
  * after the callback returns.
+ *
+ * If the callback raises an exception it will be ignored.
  */
 typedef void (*PyContext_WatchCallback)(PyContextEvent, PyContext *);