[GHC] #14591: HEAD panic: tcSyntaxOp "noSyntaxExpr"

[GHC]

#14591: HEAD panic: tcSyntaxOp  "noSyntaxExpr"
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        Reporter:  tianxiaogu        |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.2
      Resolution:                    |             Keywords:
Operating System:  Linux             |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"23b5b80418e219f0c0c27f0e37a08ccdc0045e87/ghc" 23b5b80/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="23b5b80418e219f0c0c27f0e37a08ccdc0045e87"
 Add missing case to HsExpr.isMonadFailStmtContext

 This fixes Trac #14591

 I took the opportunity to delete the dead code isMonadCompExpr
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14591#comment:1>
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