Mercurial > cpython-lru_cache-weakref

diff Python/ceval.c @ 18239:a1ef43a6d6e1 legacy-trunk

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gen_iternext(): Don't assume that the current thread state's frame is not NULL. I don't think it can be NULL from Python code, but if using generators via the C API I expect a NULL frame is possible.
author Tim Peters <tim.peters@gmail.com>
date Sat, 23 Jun 2001 05:47:56 +0000
parents f02605b8fdc1
children 47717e5667eb
line wrap: on
line diff
--- a/Python/ceval.c	Sat Jun 23 05:27:20 2001 +0000
+++ b/Python/ceval.c	Sat Jun 23 05:47:56 2001 +0000
@@ -152,7 +152,7 @@
 
 	/* Generators always return to their most recent caller, not
 	 * necessarily their creator. */
-	Py_INCREF(tstate->frame);
+	Py_XINCREF(tstate->frame);
 	assert(f->f_back == NULL);
 	f->f_back = tstate->frame;
 
@@ -163,7 +163,7 @@
 	/* Don't keep the reference to f_back any longer than necessary.  It
 	 * may keep a chain of frames alive or it could create a reference
 	 * cycle. */
-	Py_DECREF(f->f_back);
+	Py_XDECREF(f->f_back);
 	f->f_back = NULL;
 
 	return result;