script: do not ignore poll() errors. ~+20 bytes.

1 files changed, 5 insertions, 1 deletions

diff --git a/util-linux/script.c b/util-linux/script.c
index 700f0cb0a..5d6f4d924 100644
--- a/util-linux/script.c
+++ b/util-linux/script.c
@@ -115,7 +115,11 @@ int script_main(int argc ATTRIBUTE_UNUSED, char **argv)
                 /* TODO: don't use full_write's, use proper write buffering */
                 while (fd_count) {
                         /* not safe_poll! we want SIGCHLD to EINTR poll */
-                        poll(ppfd, fd_count, -1);
+                        if (poll(ppfd, fd_count, -1) < 0 && errno != EINTR) {
+                                /* If child exits too quickly, we may get EIO:
+                                 * for example, try "script -c true" */
+                                break;
+                        }
                         if (pfd[0].revents) {
                                 count = safe_read(0, buf, sizeof(buf));
                                 if (count <= 0) {