On 05/06/2016 11:04 AM, Erik de Castro Lopo wrote:
Hi all,
After a bit of rather tedious and frustrating debugging I came to the realisation that the code for the `-hb` profiling option is not thread safe. See https://ghc.haskell.org/trac/ghc/ticket/12019
This gives us an opportunity to simply remove it instead of fixing it. If there is anyone that thinks this future is really useful (ie more useful than the other profiling modes) then I'm willing to fix it. But if noone would miss it. I'd much rather remove it.
I can't say I've ever used the option, but just to inform discussion... Do you have any guesstimate[1] of how much effort it would take to fix vs. just removing? Unless there's a reasonably clear idea of how much effort there's going to be in it[2], I usually err on the side of removal *unless* a really good case can be made. Regards, [1] As ballpark as you like. Even a ratio would work, I think. [2] Which tends to not be the case for threading-related issues.