1 files changed, 7 insertions, 2 deletions

diff --git a/shell/ash.c b/shell/ash.c
index 11ba9774a..b50e0952e 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -3491,13 +3491,18 @@ setsignal(int signo)
         switch (new_act) {
         case S_CATCH:
                 act.sa_handler = signal_handler;
-                act.sa_flags = 0; /* matters only if !DFL and !IGN */
-                sigfillset(&act.sa_mask); /* ditto */
                 break;
         case S_IGN:
                 act.sa_handler = SIG_IGN;
                 break;
         }
+
+        /* flags and mask matter only if !DFL and !IGN, but we do it
+         * for all cases for more deterministic behavior:
+         */
+        act.sa_flags = 0;
+        sigfillset(&act.sa_mask);
+
         sigaction_set(signo, &act);
 
         *t = new_act;