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bug#8751: 24.0.50; CCL is broken
From: |
Stefan Monnier |
Subject: |
bug#8751: 24.0.50; CCL is broken |
Date: |
Mon, 30 May 2011 13:01:51 -0300 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) |
Paul, can you take a look at this? It seems this was introduced very
recently, probably by
* ccl.c (ccl_driver): Redo slightly to avoid the need for 'unsigned'.
ccl: add integer overflow checks
* ccl.c (CCL_CODE_MAX, GET_CCL_RANGE, GET_CCL_CODE, GET_CCL_INT):
(IN_INT_RANGE): New macros.
(ccl_driver): Use them to check for integer overflow when
decoding a CCL program. Many of the new checks are whether XINT (x)
fits in int; it doesn't always, on 64-bit hosts. The new version
doesn't catch all possible integer overflows, but it's an
improvement. (Bug#8719)
-- Stefan
>>>>> "Kazuhiro" == Kazuhiro Ito <kzhr@d1.dion.ne.jp> writes:
> Below code raises error "Error in CCL program at 4th code" on trunk.
> (progn
> (define-ccl-program ccl-test
> '(1 (loop
> (read r0)
> (write-repeat r0))))
> (ccl-execute-on-string 'ccl-test (make-vector 9 0) "_"))
> --
> Kazuhiro Ito
bug#8751: 24.0.50; CCL is broken,
Stefan Monnier <=