#7687: ghc panic on TH and deriveJSON -------------------------------+-------------------------------------------- Reporter: guest | Owner: Type: bug | Status: new Priority: normal | Component: Template Haskell Version: 7.4.2 | Keywords: TH Os: Windows | Architecture: x86_64 (amd64) Failure: Compile-time crash | Blockedby: Blocking: | Related: -------------------------------+-------------------------------------------- {-# LANGUAGE CPP,TemplateHaskell #-} module Main (main) where import Data.Aeson.TH data Test = Test Int deriving Show deriveJSON id ''Test main = return () will give Building aeson-test-0.0.1... Preprocessing test suite 'test-aeson-test' for aeson-test-0.0.1... [1 of 1] Compiling Main ( src\Main.hs, dist\build\test-aeson- test\test-aeson-test-tmp\Main.o ) Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Loading package array-0.4.0.0 ... linking ... done. Loading package bytestring-0.9.2.1 ... linking ... done. Loading package deepseq-1.3.0.0 ... linking ... done. Loading package containers-0.4.2.1 ... linking ... done. ghc.exe: panic! (the 'impossible' happened) Loading package text-0.11.2.3 ... linking ... done. (GHC version 7.4.2 for i386-unknown-mingw32): Loading package attoparsec-0.10.4.0 ... linking ... done. loadObj "C:\\Users\\User\\AppData\\Roaming\\cabal\\hashable-1.2.0.5\\ghc-7.4.2\\HShashable-1.2.0.5.o": failed Loading package blaze-builder-0.3.1.0 ... linking ... done. Loading package dlist-0.5 ... linking ... done. Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Loading package hashable-1.2.0.5 ... ghc.exe: Unknown PEi386 section name `.text.startup' (while processing: C:\Users\User\AppData\Roaming\cabal\hashable-1.2.0.5\ghc-7.4.2\HShashable-1.2.0.5.o) -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7687 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler