* io.c (io_read): should freeze buffer before thread context

  switch. [ruby-dev:24442]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@7011 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/io.c b/io.c
index f188f74c11..52e71f3df2 100644
--- a/io.c
+++ b/io.c
@@ -1197,8 +1197,8 @@ io_read(argc, argv, io)
     }
     if (len == 0) return str;
 
-    READ_CHECK(fptr->f);
     FL_SET(str, FL_FREEZE);
+    READ_CHECK(fptr->f);
     n = rb_io_fread(RSTRING(str)->ptr, len, fptr->f);
     FL_UNSET(str, FL_FREEZE);
     if (n == 0) {