[Vm-dev] Bug in Interpreter>>primitiveNextPut:
David T. Lewis
lewis at mail.msen.com
Thu Nov 26 16:43:43 UTC 2009
I opened a Mantis bug report for this issue:
On Thu, Nov 26, 2009 at 03:10:52PM +0100, Henrik Johansen wrote:
> Interpreter >> primitiveNextPut:
> limit := self fetchInteger: StreamReadLimitIndex ofObject: stream.
> atIx := (array bitAnd: AtCacheMask) + AtPutBase.
> (index < limit and: [(atCache at: atIx+AtCacheOop) = array])
> so basically, it needs ReadLimit to be > 0. (Which is only true for (Read)WriteStreams if created with on:from:to:).
> Changing the first line to
> limit := self fetchInteger: StreamWriteLimitIndex ofObject: stream.
> and the primitive now works.
> ws := WriteStream on: (String new: 500000).
> [1 to: 500000 do: [:ix | ws nextPut: $a]] timeToRun
> before: 130
> after: 33
> Inserted a counter after the prim call, for the loop above it was always >= 500000, with fix it's >=1.
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