Elie De Brauwer pointed out that xputs() isn't reliably reporting errors because there's no flush. Rather than change the output granularity, flush before exit and check errors there. (We still need xputc() doing it so "yes" doesn't continue forever.)

1 files changed, 1 insertions, 0 deletions

diff --git a/main.c b/main.c
index 829b787a..0cd1cb23 100644
--- a/main.c
+++ b/main.c
@@ -102,6 +102,7 @@ void toy_exec(char *argv[])
   if (!which) return;
   toy_init(which, argv);
   toys.which->toy_main();
+  if (fflush(NULL) || ferror(stdout)) perror_exit("write");
   exit(toys.exitval);
 }