3 files changed, 19 insertions, 2 deletions
diff --git a/erts/emulator/sys/common/erl_check_io.c b/erts/emulator/sys/common/erl_check_io.c
index b03e19ee71..f421794f91 100644
--- a/erts/emulator/sys/common/erl_check_io.c
+++ b/erts/emulator/sys/common/erl_check_io.c
@@ -1507,7 +1507,6 @@ send_event_tuple(struct erts_nif_select_event* e, ErtsResource* resource,
     }
     tuple = TUPLE4(hp, am_select, resource_term, ref_term, event_atom);
 
-    ERL_MESSAGE_TOKEN(mp) = am_undefined;
     erts_queue_message(rp, rp_locks, mp, tuple, am_system);
 
     if (rp_locks)
diff --git a/erts/emulator/sys/common/erl_poll.c b/erts/emulator/sys/common/erl_poll.c
index 70b5532af9..b4d1575ee5 100644
--- a/erts/emulator/sys/common/erl_poll.c
+++ b/erts/emulator/sys/common/erl_poll.c
@@ -803,6 +803,23 @@ update_pollset(ErtsPollSet *ps, int fd, ErtsPollOp op, ErtsPollEvents events)
     struct kevent evts[2];
     struct timespec ts = {0, 0};
 
+    if (op == ERTS_POLL_OP_ADD) {
+        /* This is a hack to make the "noshell" option work; kqueue can poll
+         * these fds but will not report EV_EOF, so we return NVAL to use the
+         * fallback instead.
+         *
+         * This may be common to all pipes but we have no way to tell whether
+         * an fd is a pipe or not. */
+        switch (fd) {
+        case STDIN_FILENO:
+        case STDOUT_FILENO:
+        case STDERR_FILENO:
+            return ERTS_POLL_EV_NVAL;
+        default:
+            break;
+        }
+    }
+
 #if defined(EV_DISPATCH) && !defined(__OpenBSD__)
     /* If we have EV_DISPATCH we use it, unless we are on OpenBSD as the
        behavior of EV_EOF seems to be edge triggered there and we need it
diff --git a/erts/emulator/sys/common/erl_sys_common_misc.c b/erts/emulator/sys/common/erl_sys_common_misc.c
index 2541ab5d31..d34e1a9ec0 100644
--- a/erts/emulator/sys/common/erl_sys_common_misc.c
+++ b/erts/emulator/sys/common/erl_sys_common_misc.c
@@ -176,6 +176,7 @@ sys_double_to_chars_fast(double f, char *buffer, int buffer_size, int decimals,
     double af;
     Uint64 int_part, frac_part;
     int neg;
+    int  has_decimals = decimals != 0;
     char *p = buffer;
 
     if (decimals < 0)
@@ -257,7 +258,7 @@ sys_double_to_chars_fast(double f, char *buffer, int buffer_size, int decimals,
     }
 
     /* Delete trailing zeroes */
-    if (compact)
+    if (compact && has_decimals)
         p = find_first_trailing_zero(p);
     *p = '\0';
     return p - buffer;