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bug#13827: faulty range check in bytevector accessor

From: Ian Price
Subject: bug#13827: faulty range check in bytevector accessor
Date: Wed, 27 Feb 2013 02:02:06 +0000
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux)

Branch: master
Commit: 9b977c836bf147d386944c401113aba32776fa68
System: 32 bit x86 Fedora 16

(use-modules (rnrs bytevectors))
(define not-32-bit (expt 2 32))
(define bv (make-bytevector 4))
(bytevector-u32-set! bv 0 not-32-bit (endianness big))
(pk bv)

Running this gives me a core dump. It happens for a wide range of values
that don't fit in 32 bits.

After some talk on #guile, Mark and I believe it comes down to the range
check in INTEGER_ACCESSOR_PROLOGUE in bytevectors.c

Ian Price -- shift-reset.com

"Programming is like pinball. The reward for doing it well is
the opportunity to do it again" - from "The Wizardy Compiled"

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