[GHC] #15086: hT profiling option

[GHC]

#15086: hT profiling option
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           Reporter:  crockeea       |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Compiler       |           Version:  8.4.2
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Documentation
  Unknown/Multiple                   |  bug
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 [https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/profiling.html
 #rts-options-for-heap-profiling The docs] indicate that you can pass `-hT`
 as an RTS option for memory profiling "by heap closure type". However, GHC
 8.4.2 claims `invalid heap profile options: -hT`, and this option is not
 listed among the usage options printed with the error.

 The user guide for GHC 8.2.2 also mentions -hT, and I believe that
 GHC-8.2.2 also did not permit the option.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15086>
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