12 Jan
2012
12 Jan
'12
4:56 p.m.
On Thu, Jan 12, 2012 at 16:50, Andrew Coppin
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 allbery.b@gmail.com wandering unix systems administrator (available) (412) 475-9364 vm/sms