merges r30364 from trunk into ruby_1_9_2. Fixes #4377.

--
    * io.c (pipe_open): Added rb_thread_atfork(). We must reinitialize
      GVL at new process creation.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@31850 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/io.c b/io.c
index c9edc75c23..dee458784a 100644
--- a/io.c
+++ b/io.c
@@ -5018,6 +5018,7 @@ pipe_open(struct rb_exec_arg *eargp, VALUE prog, const char *modestr, int fmode,
 	fflush(stdin);		/* is it really needed? */
 	pid = rb_fork(&status, 0, 0, Qnil);
 	if (pid == 0) {		/* child */
+	    rb_thread_atfork();
 	    popen_redirect(&arg);
 	    rb_io_synchronized(RFILE(orig_stdout)->fptr);
 	    rb_io_synchronized(RFILE(orig_stderr)->fptr);