commit c68a4a048cf4e2d520b00546d8a4eef3a2723e8b
author Benjamin Peterson <benjamin@python.org> Fri Jan 18 00:10:24 2013 -0500
committer Benjamin Peterson <benjamin@python.org> Fri Jan 18 00:10:24 2013 -0500
tree c2da8094f7a98fa39f2acd34af343b99c2c49861
parent fc4aa76d59968a60ea91bda4b2c505e1070743ac

check windows fd validity (closes #16992)

Modules/signalmodule.c

diff --git a/Modules/signalmodule.c b/Modules/signalmodule.c
index eb89a03..0aac98b 100644
--- a/Modules/signalmodule.c
+++ b/Modules/signalmodule.c
@@ -427,7 +427,7 @@
         return NULL;
     }
 #endif
-    if (fd != -1 && fstat(fd, &buf) != 0) {
+    if (fd != -1 && (!_PyVerify_fd(fd) || fstat(fd, &buf) != 0)) {
         PyErr_SetString(PyExc_ValueError, "invalid fd");
         return NULL;
     }