Another signal-handling refinement from RJK: the SIGCHLD handler

[u/mdw/putty] / unix / pty.c

diff --git a/unix/pty.c b/unix/pty.c
index 8bd20fe..0084e64 100644 (file)
--- 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;
 }