3 files changed, 7 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 259c53f450..75630030b0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sun Feb 2 05:48:42 2014  Eric Wong <e@80x24.org>
+
+	* io.c (rb_io_syswrite): add RB_GC_GUARD
+	  [Bug #9472][ruby-core:60407]
+
 Wed Feb  5 11:36:30 2014  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* configure.in (opt-dir): don't use non portable flag -E of sed.
diff --git a/io.c b/io.c
index 9c2adb22ec..7c8f2c9762 100644
--- a/io.c
+++ b/io.c
@@ -4213,6 +4213,7 @@ rb_io_syswrite(VALUE io, VALUE str)
     }
 
     n = rb_write_internal(fptr->fd, RSTRING_PTR(str), RSTRING_LEN(str));
+    RB_GC_GUARD(str);
 
     if (n == -1) rb_sys_fail_path(fptr->pathv);
 
diff --git a/version.h b/version.h
index bde48b91a4..8e38488132 100644
--- a/version.h
+++ b/version.h
@@ -1,5 +1,5 @@
 #define RUBY_VERSION "1.9.3"
-#define RUBY_PATCHLEVEL 512
+#define RUBY_PATCHLEVEL 513
 
 #define RUBY_RELEASE_DATE "2014-02-05"
 #define RUBY_RELEASE_YEAR 2014