merge revision(s) 45899: [Backport #9751]

	* thread.c (thread_start_func_2): stop if forked in a sub-thread,
	  the thread has become the main thread.
	  [ruby-core:62070] [Bug #9751]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@46518 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

4 files changed, 31 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 70dc331f5e..f4dc059b8e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Mon Jun 23 18:50:13 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* thread.c (thread_start_func_2): stop if forked in a sub-thread,
+	  the thread has become the main thread.
+	  [ruby-core:62070] [Bug #9751]
+
 Mon Jun 23 18:35:34 2014  Josh Goebel  <dreamer3@gmail.com>
 
 	* net/protocol.rb (using_each_crlf_line): fix SMTP dot-stuffing
diff --git a/test/ruby/test_thread.rb b/test/ruby/test_thread.rb
index 9ac2c30710..1e730a1452 100644
--- a/test/ruby/test_thread.rb
+++ b/test/ruby/test_thread.rb
@@ -964,4 +964,25 @@ Thread.new(Thread.current) {|mth|
     pid, status = Process.waitpid2(pid)
     assert_equal(false, status.success?, bug8433)
   end if Process.respond_to?(:fork)
+
+  def test_fork_in_thread
+    bug9751 = '[ruby-core:62070] [Bug #9751]'
+    f = nil
+    th = Thread.start do
+      unless f = IO.popen("-")
+        STDERR.reopen(STDOUT)
+        exit
+      end
+      Process.wait2(f.pid)
+    end
+    unless th.join(3)
+      Process.kill(:QUIT, f.pid)
+      Process.kill(:KILL, f.pid) unless th.join(1)
+    end
+    _, status = th.value
+    output = f.read
+    f.close
+    assert_not_predicate(status, :signaled?, FailDesc[status, bug9751, output])
+    assert_predicate(status, :success?, bug9751)
+  end if Process.respond_to?(:fork)
 end
diff --git a/thread.c b/thread.c
index 142ed5dbf5..5be0855040 100644
--- a/thread.c
+++ b/thread.c
@@ -552,6 +552,9 @@ thread_start_func_2(rb_thread_t *th, VALUE *stack_start, VALUE *register_stack_s
 	thread_debug("thread end: %p\n", (void *)th);
 
 	main_th = th->vm->main_thread;
+	if (main_th == th) {
+	    ruby_stop(0);
+	}
 	if (RB_TYPE_P(errinfo, T_OBJECT)) {
 	    /* treat with normal error object */
 	    rb_threadptr_raise(main_th, 1, &errinfo);
diff --git a/version.h b/version.h
index d654f06ec9..15a9aec128 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.0.0"
 #define RUBY_RELEASE_DATE "2014-06-23"
-#define RUBY_PATCHLEVEL 497
+#define RUBY_PATCHLEVEL 498
 
 #define RUBY_RELEASE_YEAR 2014
 #define RUBY_RELEASE_MONTH 6