Debugging.

tests/event/select.rs

@@ -297,11 +297,13 @@ fn test_select_with_maxfd_sockets() {
     }
     setrlimit(Resource::Nofile, rlimit).unwrap();
 
+    dbg!("hello");
     // Renumber the fds to the maximum possible values.
     let great_fd = unsafe { libc::dup2(reader.as_raw_fd(), fd_limit as RawFd - 1) };
     let reader = unsafe { OwnedFd::from_raw_fd(great_fd) };
     let great_fd = unsafe { libc::dup2(writer.as_raw_fd(), fd_limit as RawFd - 2) };
     let writer = unsafe { OwnedFd::from_raw_fd(great_fd) };
+    dbg!("hello");
 
     let nfds = max(reader.as_raw_fd(), writer.as_raw_fd()) + 1;
 
@@ -311,6 +313,7 @@ fn test_select_with_maxfd_sockets() {
     // `select` should say there's nothing ready to be read from the pipe.
     let mut readfds = vec![FdSetElement::default(); fd_set_num_elements(2, nfds as RawFd)];
     fd_set_insert(&mut readfds, reader.as_raw_fd());
+    dbg!("hello");
     let num = retry_on_intr(|| unsafe {
         select(
             nfds,
@@ -324,16 +327,19 @@ fn test_select_with_maxfd_sockets() {
         )
     })
     .unwrap();
+    dbg!("hello");
     assert_eq!(num, 0);
     assert!(!fd_set_contains(&readfds, reader.as_raw_fd()));
     assert_eq!(fd_set_bound(&readfds), 0);
 
+    dbg!("hello");
     // Write a byte to the pipe.
     assert_eq!(
         retry_on_intr(|| send(&writer, b"a", SendFlags::empty())).unwrap(),
         1
     );
 
+    dbg!("hello");
     // `select` should now say there's data to be read.
     let mut readfds = vec![FdSetElement::default(); fd_set_num_elements(2, nfds as RawFd)];
     fd_set_insert(&mut readfds, reader.as_raw_fd());
@@ -346,6 +352,7 @@ fn test_select_with_maxfd_sockets() {
     assert!(!fd_set_contains(&readfds, reader.as_raw_fd()));
     assert_eq!(fd_set_bound(&readfds), 0);
 
+    dbg!("hello");
     // Read the byte from the pipe.
     let mut buf = [b'\0'];
     assert_eq!(
@@ -372,6 +379,7 @@ fn test_select_with_maxfd_sockets() {
     assert_eq!(num, 0);
     assert!(!fd_set_contains(&readfds, reader.as_raw_fd()));
     assert_eq!(fd_set_bound(&readfds), 0);
+    dbg!("hello");
 
     setrlimit(Resource::Nofile, orig_rlimit).unwrap();
 }