diff options
| -rw-r--r-- | ipc/msg.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/ipc/msg.c b/ipc/msg.c index 32e9bd837cde..e3e52ce01123 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -763,7 +763,10 @@ static inline int convert_mode(long *msgtyp, int msgflg) if (*msgtyp == 0) return SEARCH_ANY; if (*msgtyp < 0) { - *msgtyp = -*msgtyp; + if (*msgtyp == LONG_MIN) /* -LONG_MIN is undefined */ + *msgtyp = LONG_MAX; + else + *msgtyp = -*msgtyp; return SEARCH_LESSEQUAL; } if (msgflg & MSG_EXCEPT) |