From 6bbad2999504110c1b760bb2d62e0d649afef1a9 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 20 May 2003 08:18:16 +0000
Subject: * error.c (syserr_initialize): use Errno constants as default   errno
 for subclasses.  [ruby-dev:20241]

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@3835 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 error.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'error.c')

diff --git a/error.c b/error.c
index dbbf0d028..26dec201c 100644
--- a/error.c
+++ b/error.c
@@ -542,11 +542,17 @@ syserr_initialize(argc, argv, self)
     char *err;
     char *buf;
     VALUE error, mesg;
+    VALUE klass = rb_obj_class(self);
 
-    if (rb_scan_args(argc, argv, "11", &mesg, &error) == 1 && FIXNUM_P(mesg)) {
+    rb_scan_args(argc, argv, klass == rb_eSystemCallError ? "11" : "02",
+		 &mesg, &error);
+    if (argc == 1 && FIXNUM_P(mesg)) {
 	error = mesg;
 	mesg = Qnil;
     }
+    if (klass != rb_eSystemCallError && NIL_P(error)) {
+	error = rb_const_get_at(klass, rb_intern("Errno"));
+    }
     err = strerror(NUM2LONG(error));
     if (!err) err = "Unknown error";
     if (RTEST(mesg)) {
-- 
cgit