问题
I'm writing some disposable Haskell scripts to solve some of the Project Euler problems. I don't really want to have to compile them because of the number of changes I'm constantly having to make, but in a few cases I've found that I've run out of stack space.
The documentation for runhaskell says that the following syntax should increase the stack space:
runhaskell +RTS -K5M -RTS Script.hs
This never, ever works (in any permutation I've tried). The stack size always remains 8,388,608. This is maddening, and I haven't found much help on Google.
Any suggestions? What am I doing wrong?
回答1:
I'm guessing you're using GHC. Chapter 4 of the User's Guide of the newly released 6.10.1 says:
The only runghc flag currently is -f /path/to/ghc, which tells runghc which GHC to use to run the program.
I don't see a bug logged at http://hackage.haskell.org/trac/ghc . Seems pretty lame to me. I'd suggest asking on irc #ghc, or the cvs-ghc mailing list.
Of the other Haskell compilers/interpreters, only nhc98 seems allow you to set the max stack size. Depending on your OS, nhc98 could be an option.
回答2:
I'm doing the same thing (Project Euler) and have been using ghc. The trick (thanks #haskell!) is to tell the executable to have more stack size rather than the compiler.
$ ghc -O2 -o 23 23.hs
$ ./23 +RTS -K128M
回答3:
Just compile it.
Problem123.hs:
module Main where
main = do
print solution
solution = ...
Short and sweet command line:
ghc --make -O3 Problem123.hs
./Problem123
Final note: I'm not sure I would call them "scripts".
来源：https://stackoverflow.com/questions/275250/how-can-i-increase-the-stack-size-with-runhaskell