[GHC] #10665: INLINE breaks rewrite rules when '-g' is used

[GHC]

#10665: INLINE breaks rewrite rules when '-g' is used
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        Reporter:  slyfox            |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.10.2-rc2
  (CodeGen)                          |
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash                              |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by simonpj):

 Your diagnosis sounds dead right to me.

 It is very unreliable to have a rule where functions on the LHS can be
 inlined when the rule is active.  Better to make sure that the rule is
 active only up to phase 2 (say), and the inlining of `a2` happens only
 after phase 2.  Maybe this is really a bug in (the RULES of) conduit?  Can
 you describe the actual RULE and inlining?

 Getting a panic is bad.  Probably we should simply not inline in the LHS
 of a rule, regardless of INLINE pragmas.

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10665#comment:1>
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