Don't reraise SIGCHLD, as that can now lose.

With the 2012-12-03 fix for Bug#12980 in place, an old workaround
for some of that bug's symptoms can now cause Emacs to abort.
Remove the workaround.
* process.c (wait_reading_process_output): Don't reraise SIGCHLD.
The bug that caused SIGCHLD to get lost has been fixed, and the
workaround for it can now cause Emacs to abort.

Fixes: debbugs:13192

1 files changed, 1 insertions, 7 deletions

diff --git a/src/process.c b/src/process.c
index 7b21d060cf8..92d5e692d0b 100644
--- a/src/process.c
+++ b/src/process.c
@@ -4773,11 +4773,7 @@ wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd,
                  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).
-
-                 However, it has been known to happen that the SIGCHLD
-                 got lost.  So raise the signal again just in case.
-                 It can't hurt.  */
+                 get a SIGCHLD).  */
               else if (nread == -1 && errno == EIO)
                 {
                   struct Lisp_Process *p = XPROCESS (proc);
@@ -4795,8 +4791,6 @@ wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd,
                       p->tick = ++process_tick;
                       pset_status (p, Qfailed);
                     }
-                  else
-                    handle_child_signal (SIGCHLD);
                 }
 #endif /* HAVE_PTYS */
               /* If we can detect process termination, don't consider the