From c43795c6648546eecf92e22150b7e478e63e1a31 Mon Sep 17 00:00:00 2001
From: ksss <co000ri@gmail.com>
Date: Sun, 21 May 2017 16:58:57 +0900
Subject: Should raise SyscallError on IO#syswrite

instead of IOError
---
 src/io.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src')

diff --git a/src/io.c b/src/io.c
index 51a659f0e..452a61a3f 100644
--- a/src/io.c
+++ b/src/io.c
@@ -705,6 +705,9 @@ mrb_io_syswrite(mrb_state *mrb, mrb_value io)
     fd = fptr->fd2;
   }
   length = write(fd, RSTRING_PTR(buf), RSTRING_LEN(buf));
+  if (length == -1) {
+    mrb_sys_fail(mrb, 0);
+  }
 
   return mrb_fixnum_value(length);
 }
-- 
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