opt out of accursedUnutterablePerformIO

[Ben Franksen]

Am 05.03.2018 um 22:04 schrieb Ben Franksen:
> Am 05.03.2018 um 21:51 schrieb Ben Franksen:
>> I have managed to track the whole thing down to the interaction with
>> another utility function for ByteStrings (betweenLinesPS) that works
>> with the internal representation. The small test program is attached.
> 
> Oh, and BTW it does not crash when I remove the INLINE annotation for
> linesPS2.

Ops, wrong, I made a mistake when testing. It should not inline anyway
since it is a recursive function. Sorry for the noise.