fix by Jie Zhang for exit status and POSIX compliance:

http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html
The exit status of a command that terminated because it received a signal shall be reported as greater than 128.

1 files changed, 1 insertions, 1 deletions

diff --git a/shell/msh.c b/shell/msh.c
index a96e799e2..aa6fb1d26 100644
--- a/shell/msh.c
+++ b/shell/msh.c
@@ -3007,7 +3007,7 @@ static int waitfor(int lastpid, int canintr)
                                         prs(" - core dumped");
                                 if (rv >= ARRAY_SIZE(signame) || signame[rv])
                                         prs("\n");
-                                rv = -1;
+                                rv |= 0x80;
                         } else
                                 rv = WAITVAL(s);
                 }