1 files changed, 8 insertions, 4 deletions
diff --git a/io.c b/io.c
index 47b86ed240..9ad7bff972 100644
--- a/io.c
+++ b/io.c
@@ -6665,10 +6665,14 @@ rb_io_reopen(int argc, VALUE *argv, VALUE file)
         }
     }
     else {
-        if (close(fptr->fd) < 0)
-            rb_sys_fail_path(fptr->pathv);
-        fptr->fd = -1;
-        fptr->fd = rb_sysopen(fptr->pathv, oflags, 0666);
+	int tmpfd = rb_sysopen(fptr->pathv, oflags, 0666);
+	int err = 0;
+	if (rb_cloexec_dup2(tmpfd, fptr->fd) < 0)
+	    err = errno;
+	(void)close(tmpfd);
+	if (err) {
+	    rb_syserr_fail_path(err, fptr->pathv);
+	}
     }
 
     return file;