limit.rlim_cur can be negative (RLIM_INFINITY)

kulikjak · kulikjak · commit 01cb4a7d4fd2 · 2026-03-24T14:27:50.000+01:00
diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
@@ -1188,7 +1188,7 @@ newDevPollObject(PyObject *module)
     ** allocate huge amounts of memory or even fail to allocate.
     */
     out_size = limit.rlim_cur;
-    if (out_size > DEVPOLL_MAX_OUT_BUFFER_SIZE) {
+    if ((rlim_t)out_size > DEVPOLL_MAX_OUT_BUFFER_SIZE) {
         out_size = DEVPOLL_MAX_OUT_BUFFER_SIZE;
     }
 

Original file line number	Diff line number	Diff line change
`@@ -1188,7 +1188,7 @@ newDevPollObject(PyObject *module)`
`1188`	`1188`	`** allocate huge amounts of memory or even fail to allocate.`
`1189`	`1189`	`*/`
`1190`	`1190`	`out_size = limit.rlim_cur;`
`1191`		`- if (out_size > DEVPOLL_MAX_OUT_BUFFER_SIZE) {`
	`1191`	`+ if ((rlim_t)out_size > DEVPOLL_MAX_OUT_BUFFER_SIZE) {`
`1192`	`1192`	`out_size = DEVPOLL_MAX_OUT_BUFFER_SIZE;`
`1193`	`1193`	`}`
`1194`	`1194`