string output streams: null pointer deref.

Originally, string output streams would null out their handle
when the string was extracted. This changed in commit
e44c113ee17c7cf15e8b1891f4d51ec03b16bc24 [Jul 2015], so that
just the string buffer was nulled out. Unfortunately, two
places in the code were not updated, still checking for a null
handle, which is always false, and not defending against the
null handle.

* stream.c (string_out_extracted_error): New static function.
(string_out_put_string, string_out_put_byte): Check the buffer
for null, not the handle, which doesn't go null while the
object is live. Throw an exception rather than returning nil.

0 files changed, 0 insertions, 0 deletions