* string.c (rb_memhash): randomize hash to avoid algorithmic

  complexity attacks.
  (rb_str_hash): use rb_memhash.

* include/ruby/intern.h (rb_reset_random_seed): declared.

* thread.c (rb_thread_atfork): call rb_reset_random_seed.

* inits.c (rb_call_inits): call Init_RandomSeed at first.

* random.c (seed_initialized): defined.
  (fill_random_seed): extracted from random_seed.
  (make_seed_value): extracted from random_seed.
  (rb_f_rand): initialize random seed at first.
  (initial_seed): defined.
  (Init_RandomSeed): defined.
  (Init_RandomSeed2): defined.
  (rb_reset_random_seed): defined.
  (Init_Random): call Init_RandomSeed2.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17465 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/thread.c b/thread.c
index 92f5104dba..13630b6b02 100644
--- a/thread.c
+++ b/thread.c
@@ -2124,6 +2124,7 @@ rb_thread_atfork(void)
     st_clear(vm->living_threads);
     st_insert(vm->living_threads, thval, (st_data_t) th->thread_id);
     vm->sleeper = 0;
+    rb_reset_random_seed();
 }
 
 static int