(wait_reading_process_input): If a pty gives EIO,

raise SIGCHLD just in case.

1 files changed, 6 insertions, 2 deletions

diff --git a/src/process.c b/src/process.c
index 2ca75250706..0e5ae9e3fe2 100644
--- a/src/process.c
+++ b/src/process.c
@@ -2676,9 +2676,13 @@ wait_reading_process_input (time_limit, microsecs, read_kbd, do_display)
                  Therefore, if we get an error reading and errno =
                  EIO, just continue, because the child process has
                  exited and should clean itself up soon (e.g. when we
-                 get a SIGCHLD). */
+                 get a SIGCHLD).
+
+                 However, it has been known to happen that the SIGCHLD
+                 got lost.  So raise the signl again just in case.
+                 It can't hurt.  */
               else if (nread == -1 && errno == EIO)
-                ;
+                kill (getpid (), SIGCHLD);
 #endif                          /* HAVE_PTYS */
               /* If we can detect process termination, don't consider the process
                  gone just because its pipe is closed.  */