[GHC] #9397: Probable fix: add an INLINE[n] or NOINLINE[n] pragma confused?

[GHC]

#9397: Probable fix: add an INLINE[n] or NOINLINE[n] pragma confused?
-------------------------------------+-------------------------------------
       Reporter:  jrp                |                   Owner:
           Type:  task               |                  Status:  new
       Priority:  normal             |               Milestone:
      Component:  Build System       |                 Version:  7.8.3
       Keywords:                     |        Operating System:
   Architecture:  Unknown/Multiple   |  Unknown/Multiple
     Difficulty:  Unknown            |         Type of failure:  Incorrect
     Blocked By:                     |  warning at compile-time
Related Tickets:                     |               Test Case:
                                     |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------
 Building ghc HEAD using 7.8.3 under OS X results in the following
 warnings:
 {{{
 "inplace/bin/ghc-stage1" -hisuf hi -osuf  o -hcsuf hc -static  -O -H64m
 -package-name binary-0.7.1.0 -hide-all-packages -i -ilibraries/binary/src
 -ilibraries/binary/dist-install/build -ilibraries/binary/dist-
 install/build/autogen -Ilibraries/binary/dist-install/build
 -Ilibraries/binary/dist-install/build/autogen -Ilibraries/binary/.
 -optP-DGENERICS -optP-include -optPlibraries/binary/dist-
 install/build/autogen/cabal_macros.h -package array-0.5.0.0 -package
 base-4.7.1.0 -package bytestring-0.10.4.0 -package containers-0.5.5.1 -O2
 -Wall -fliberate-case-threshold=1000 -XHaskell98 -O2  -no-user-package-db
 -rtsopts      -odir libraries/binary/dist-install/build -hidir
 libraries/binary/dist-install/build -stubdir libraries/binary/dist-
 install/build -split-objs -dynamic-too -c
 libraries/binary/src/Data/Binary/Get/Internal.hs -o libraries/binary/dist-
 install/build/Data/Binary/Get/Internal.o -dyno libraries/binary/dist-
 install/build/Data/Binary/Get/Internal.dyn_o

 libraries/binary/src/Data/Binary/Get/Internal.hs:314:1: Warning:
     Rule "<$> to <*>" may never fire because ‘<$>’ might inline first
     Probable fix: add an INLINE[n] or NOINLINE[n] pragma on ‘<$>’
 "inplace/bin/ghc-stage1" -hisuf hi -osuf  o -hcsuf hc -static  -O -H64m
 -package-name binary-0.7.1.0 -hide-all-packages -i -ilibraries/binary/src
 -ilibraries/binary/dist-install/build -ilibraries/binary/dist-
 install/build/autogen -Ilibraries/binary/dist-install/build
 -Ilibraries/binary/dist-install/build/autogen -Ilibraries/binary/.
 -optP-DGENERICS -optP-include -optPlibraries/binary/dist-
 install/build/autogen/cabal_macros.h -package array-0.5.0.0 -package
 base-4.7.1.0 -package bytestring-0.10.4.0 -package containers-0.5.5.1 -O2
 -Wall -fliberate-case-threshold=1000 -XHaskell98 -O2  -no-user-package-db
 -rtsopts      -odir libraries/binary/dist-install/build -hidir
 libraries/binary/dist-install/build -stubdir libraries/binary/dist-
 install/build -split-objs -dynamic-too -c
 libraries/binary/src/Data/Binary/Get.hs -o libraries/binary/dist-
 install/build/Data/Binary/Get.o -dyno libraries/binary/dist-
 install/build/Data/Binary/Get.dyn_o

 libraries/binary/src/Data/Binary/Get.hs:416:1: Warning:
     Rule "getWord8/readN" may never fire
       because ‘getWord8’ might inline first
     Probable fix: add an INLINE[n] or NOINLINE[n] pragma on ‘getWord8’

 libraries/binary/src/Data/Binary/Get.hs:417:1: Warning:
     Rule "getWord16be/readN" may never fire
       because ‘getWord16be’ might inline first
     Probable fix: add an INLINE[n] or NOINLINE[n] pragma on ‘getWord16be’

 libraries/binary/src/Data/Binary/Get.hs:418:1: Warning:
     Rule "getWord16le/readN" may never fire
       because ‘getWord16le’ might inline first
     Probable fix: add an INLINE[n] or NOINLINE[n] pragma on ‘getWord16le’

 libraries/binary/src/Data/Binary/Get.hs:419:1: Warning:
     Rule "getWord32be/readN" may never fire
       because ‘getWord32be’ might inline first
     Probable fix: add an INLINE[n] or NOINLINE[n] pragma on ‘getWord32be’

 libraries/binary/src/Data/Binary/Get.hs:420:1: Warning:
     Rule "getWord32le/readN" may never fire
       because ‘getWord32le’ might inline first
     Probable fix: add an INLINE[n] or NOINLINE[n] pragma on ‘getWord32le’

 libraries/binary/src/Data/Binary/Get.hs:421:1: Warning:
     Rule "getWord64be/readN" may never fire
       because ‘getWord64be’ might inline first
     Probable fix: add an INLINE[n] or NOINLINE[n] pragma on ‘getWord64be’

 libraries/binary/src/Data/Binary/Get.hs:422:1: Warning:
     Rule "getWord64le/readN" may never fire
       because ‘getWord64le’ might inline first
     Probable fix: add an INLINE[n] or NOINLINE[n] pragma on ‘getWord64le’

 }}}

 Not sure what the probable fix is suggesting as the functions that are
 pointed are already marked as INLINE.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9397>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler