lib: Fix compiler warnings in test-ioloop

Fixes:
test-ioloop.c:72: error: ignoring return value of ‘write’, declared with attribute warn_unused_result

diff --git a/src/lib/test-ioloop.c b/src/lib/test-ioloop.c
index f8e32ef1954417c9ee9abe0e7f54194a217fe1c3..68f8dfabebf50afeff1a097a9a15eac194833b94 100644 (file)
--- a/src/lib/test-ioloop.c
+++ b/src/lib/test-ioloop.c
@@ -69,8 +69,9 @@ static void test_ioloop_fd(void)
 
        struct timeout *to = timeout_add(2000, test_ioloop_fd_to, &test_ctx);
 
-       (void)write(fds[0], "ltr", 3);
-       (void)write(fds[1], "rtl", 3);
+       if (write(fds[0], "ltr", 3) != 3 ||
+           write(fds[1], "rtl", 3) != 3)
+               i_fatal("write() failed: %m");
 
        io_loop_run(ioloop);