From d6739ada35ce6e0f3182f935606e873e6e06f1bf Mon Sep 17 00:00:00 2001
From: Simon Tatham <anakin@pobox.com>
Date: Sat, 2 Nov 2002 16:05:26 +0000
Subject: [PATCH] Another signal-handling refinement from RJK: the SIGCHLD
 handler should be prepared to reap more than one child per invocation if
 necessary, since we do after all have two.

[originally from svn r2183]
---
 unix/pty.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/unix/pty.c b/unix/pty.c
index 8bd20fec..0084e64a 100644
--- a/unix/pty.c
+++ b/unix/pty.c
@@ -168,11 +168,13 @@ static void sigchld_handler(int signum)
     pid_t pid;
     int status;
 
-    pid = waitpid(-1, &status, WNOHANG);
-    if (pid == pty_child_pid && (WIFEXITED(status) || WIFSIGNALED(status))) {
-	pty_exit_code = status;
-	pty_child_dead = TRUE;
-    }
+    do {
+	pid = waitpid(-1, &status, WNOHANG);
+	if (pid == pty_child_pid && (WIFEXITED(status) || WIFSIGNALED(status))) {
+	    pty_exit_code = status;
+	    pty_child_dead = TRUE;
+	}
+    } while(pid > 0);
     errno = save_errno;
 }