On Thu, Jan 12, 2012 at 16:50, Andrew Coppin <andrewcop...@btinternet.com>wrote:
> My guess is that your "debug printing" is causing something to be > evaluated when it otherwise wouldn't be, causing a transaction to begin > within a transaction. > My guess is something is being lazily evaluated as usual, but if that is forced within a transaction, well, last I checked the GHC I/O system used STM internally so unsafePerformIO debug prints could well cause nested transactions. -- brandon s allbery allber...@gmail.com wandering unix systems administrator (available) (412) 475-9364 vm/sms
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