[3.13] gh-153444: Fix compile warning in Modules/_interpchannelsmodule.c (GH-153445) (#153449)

miss-islington · sobolevn · web-flow · commit 19a02148e573 · 2026-07-09T16:37:13.000Z
gh-153444: Fix compile warning in `Modules/_interpchannelsmodule.c` (GH-153445) (cherry picked from commit 33678dc) Co-authored-by: sobolevn <mail@sobolevn.me>
diff --git a/Modules/_interpchannelsmodule.c b/Modules/_interpchannelsmodule.c
@@ -2903,7 +2903,8 @@ channelsmod_create(PyObject *self, PyObject *args, PyObject *kwds)
 
     int64_t cid = channel_create(&_globals.channels, unboundop);
     if (cid < 0) {
-        (void)handle_channel_error(cid, self, cid);
+        // Negative `cid` can't be too big for a downcast:
+        (void)handle_channel_error((int)cid, self, cid);
         return NULL;
     }
     module_state *state = get_module_state(self);

Original file line number	Diff line number	Diff line change
`@@ -2903,7 +2903,8 @@ channelsmod_create(PyObject self, PyObject args, PyObject *kwds)`
`2903`	`2903`
`2904`	`2904`	`int64_t cid = channel_create(&_globals.channels, unboundop);`
`2905`	`2905`	`if (cid < 0) {`
`2906`		`- (void)handle_channel_error(cid, self, cid);`
	`2906`	+ // Negative `cid` can't be too big for a downcast:
	`2907`	`+ (void)handle_channel_error((int)cid, self, cid);`
`2907`	`2908`	`return NULL;`
`2908`	`2909`	`}`
`2909`	`2910`	`module_state *state = get_module_state(self);`