GitLab

Compiling this:

{-# LANGUAGE TemplateHaskell #-}
module Foo where

import Data.Aeson
import Data.Aeson.TH

data Test = Test

$(deriveFromJSON defaultOptions ''Test)

ghc-7.7.20131115 crashes with

Foo.hs:10:3:
    Can't find interface-file declaration for variable Data.Aeson.TH.parseTypeMismatch'
      Probable cause: bug in .hi-boot file, or inconsistent .hi file
      Use -ddump-if-trace to get an idea of which file caused the error
    In the expression:
      Data.Aeson.TH.parseTypeMismatch'
        "Test"
        "Foo.Test"
        "an empty Array"
        ("Array of length " ++ ((show . Data.Vector.length) arr_a3BM))
    In a case alternative:
        Array arr_a3BM
          | Data.Vector.null arr_a3BM -> Control.Applicative.pure Test
          | otherwise
          -> Data.Aeson.TH.parseTypeMismatch'
               "Test"
               "Foo.Test"
               "an empty Array"
               ("Array of length " ++ ((show . Data.Vector.length) arr_a3BM))
    In the expression:
      case value_a3BL of {
        Array arr_a3BM
          | Data.Vector.null arr_a3BM -> Control.Applicative.pure Test
          | otherwise
          -> Data.Aeson.TH.parseTypeMismatch'
               "Test"
               "Foo.Test"
               "an empty Array"
               ("Array of length " ++ ((show . Data.Vector.length) arr_a3BM))
        other_a3BN
          -> Data.Aeson.TH.parseTypeMismatch'
               "Test" "Foo.Test" "Array" (Data.Aeson.TH.valueConName other_a3BN) }

Trac metadata

Trac field	Value
Version	7.7
Type	Bug
TypeOfFailure	OtherFailure
Priority	high
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system	Windows
Architecture	x86