https://git.ruby-lang.org/ruby.git/commit/?id=df62d6522a

From df62d6522a6f679642e9b10dbf1edb1d9b646e91 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Mon, 4 Nov 2019 09:14:18 +0900
Subject: Use the dedicated function `rb_io_check_io`


diff --git a/process.c b/process.c
index 652fdaf..6fa3270 100644
--- a/process.c
+++ b/process.c
@@ -1840,7 +1840,7 @@ check_exec_redirect_fd(VALUE v, int iskey) https://github.com/ruby/ruby/blob/trunk/process.c#L1840
         else
             goto wrong;
     }
-    else if (!NIL_P(tmp = rb_check_convert_type_with_id(v, T_FILE, "IO", idTo_io))) {
+    else if (!NIL_P(tmp = rb_io_check_io(v))) {
         rb_io_t *fptr;
         GetOpenFile(tmp, fptr);
         if (fptr->tied_io_for_writing)
-- 
cgit v0.10.2


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