diff options
Diffstat (limited to 'thread.c')
-rw-r--r-- | thread.c | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -2465,7 +2465,9 @@ rb_fd_rcopy(fd_set *dst, rb_fdset_t *src) { int max = rb_fd_max(src); - if (max > FD_SETSIZE) { + /* we assume src is the result of select() with dst, so dst should be + * larger or equal than src. */ + if (max > FD_SETSIZE || max > dst->fd_count) { rb_raise(rb_eArgError, "too large fdsets"); } |