[GHC] #10445: Wrong stack space size when using -Ksize

[GHC]

#10445: Wrong stack space size when using -Ksize
-------------------------------------+-------------------------------------
              Reporter:  asr         |             Owner:
                  Type:  bug         |            Status:  new
              Priority:  normal      |         Milestone:  7.10.2
             Component:  Compiler    |           Version:  7.10.1
              Keywords:              |  Operating System:  Unknown/Multiple
          Architecture:              |   Type of failure:  None/Unknown
  Unknown/Multiple                   |        Blocked By:
             Test Case:              |   Related Tickets:
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------
 After compiling the first example in
 https://wiki.haskell.org/Performance/Accumulating_parameter:

 {{{
 $ cat Test.hs

 len :: [a] -> Int
 len []     = 0
 len (x:xs) = len xs + 1

 main :: IO ()
 main = print $ len [1..1000000]
 }}}

 {{{
 $ ghc Test.hs -rtsopts
 }}}

 and running

 {{{
 ./Test +RTS -K10K
 }}}

 GHC 7.6.3 reports

 {{{
 Stack space overflow: current size 10240 bytes.
 }}}

 GHC 7.8.4 reports

 {{{
 Stack space overflow: current size 33632 bytes.
 }}}

 and GHC 7.10.1 reports

 {{{
 Stack space overflow: current size 99136 bytes.
 }}}

 GHC 7.8.3 and 7.10.1 report an incorrect stack space size.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10445>
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