ensure paths NUL-terminated

* dir.c (check_dirname): ensure path name NUL-terminated for
  SHARABLE_MIDDLE_SUBSTRING.
* io.c (rb_sysopen): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51073 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/io.c b/io.c
index 40d8920081..184f0e6496 100644
--- a/io.c
+++ b/io.c
@@ -5444,6 +5444,7 @@ rb_sysopen(VALUE fname, int oflags, mode_t perm)
     struct sysopen_struct data;
 
     data.fname = rb_str_encode_ospath(fname);
+    StringValueCStr(data.fname);
     data.oflags = oflags;
     data.perm = perm;