Don't break std* file descriptors (inspired by the other is_socket() …

…which lives in poll_win.c)
libressl · Oct 15, 2024 · 7d69463 · 7d69463
1 parent 55a2331
commit 7d69463
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/crypto/compat/posix_win.c b/crypto/compat/posix_win.c
@@ -161,6 +161,9 @@ wsa_errno(int err)
 static int
 is_socket(int fd)
 {
+	/* Border case: Don't break std* file descriptors */
+	if (fd < 3)
+		return 0;
 	return (fd & 1) == 0; /* daringly assumes that any valid socket is even */
 }