prefer rb_syserr_fail

* file.c, io.c, util.c: prefer rb_syserr_fail with saved errno
  over setting errno then call rb_sys_fail, not to be clobbered
  potentially and to reduce thread local errno accesses.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53264 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index e7b24143e2..e9f36e59dc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Wed Dec 23 17:57:45 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* file.c, io.c, util.c: prefer rb_syserr_fail with saved errno
+	  over setting errno then call rb_sys_fail, not to be clobbered
+	  potentially and to reduce thread local errno accesses.
+
 Wed Dec 23 11:58:52 2015  Yuichiro Kaneko  <yui-knk@ruby-lang.org>
 
 	* string.c: Fix document. Default value of the first