process.c: Add Process._fork (#5017)

* process.c: Add Process._fork

This API is supposed for application monitoring libraries to hook fork
event.

[Feature #17795]

Co-authored-by: Nobuyoshi Nakada <nobu@ruby-lang.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/io.c b/io.c
index 4cd8a4fa5d..fceb7019f1 100644
--- a/io.c
+++ b/io.c
@@ -6897,7 +6897,7 @@ pipe_open(VALUE execarg_obj, const char *modestr, int fmode,
     }
     else {
 # if defined(HAVE_WORKING_FORK)
-	pid = rb_fork_ruby(&status);
+	pid = rb_call_proc__fork();
 	if (pid == 0) {		/* child */
 	    popen_redirect(&arg);
 	    rb_io_synchronized(RFILE(orig_stdout)->fptr);