Custom Query (1030 matches)

It was reported (by David Brown on Feb 10,2008} that the following code crashes

(let ((shared1 (make-array 8 :element-type '(unsigned-byte 8)))
       (shared2 (make-array 8 :element-type '(unsigned-byte 8))))
   (ccl:with-pointer-to-ivector (%shared1 shared1)
     (ccl:with-pointer-to-ivector (%shared2 shared2)
       (%stack-block ((stacky 8))
         (format t "~A~%~A~%~A~%" %shared1 %shared2 stacky)))))

This should have been fixed in recent checkins, but a test case for the bug is here for the record.

%SET-CSTRING (which is the SETF inverse of %GET-CSTRING) tries to use %COPY-IVECTOR-TO-PTR; that can't work (since strings are always UTF-32 internally).

(This was originally part of ticket:241)

Reported in email:

I know this is an internal function, but I don't see any exported equivalent
functionality.  In any case, it appears the :start keyword argument is doing
something wrong.

Welcome to Clozure Common Lisp Version 1.2-r7902S  (LinuxX8664)!
? (ccl::decode-string-from-octets  (make-array 5 :element-type
'(unsigned-byte 8) :initial-element 65))
"AAAAA"
5
? (ccl::decode-string-from-octets  (make-array 5 :element-type
'(unsigned-byte 8) :initial-element 65) :start 1)
"AA"
3
? (ccl::decode-string-from-octets  (make-array 5 :element-type
'(unsigned-byte 8) :initial-element 65) :start 0)
"AAAAA"
5
? (ccl::decode-string-from-octets  (make-array 5 :element-type
'(unsigned-byte 8) :initial-element 65) :start 2)
""
1
? (ccl::decode-string-from-octets  (make-array 5 :element-type
'(unsigned-byte 8) :initial-element 65) :start 1)
"AA"
3


In this case it's skipping some extra octets.  But that's not the worst of
it.  "In the wild" I observed this function adding garbage to the end of the
string that is returned, if start > 0.