Hi I've attached a minimal example, which makes the compiler complain in error about multiple instance declarations. Run "make" twice.
~/src/hsskripte/bugrep $ make ghc --make mtest.hs Chasing modules from: mtest.hs Compiling Schema ( ./Schema.hs, ./Schema.o ) Compiling Datenbank ( ./Datenbank.hs, ./Datenbank.o ) Compiling Main ( mtest.hs, mtest.o ) Linking ... ~/src/hsskripte/bugrep $ make ghc --make mtest.hs Chasing modules from: mtest.hs Skipping Schema ( ./Schema.hs, ./Schema.o ) Skipping Datenbank ( ./Datenbank.hs, ./Datenbank.o ) Duplicate instance declarations: In module Datenbank: GHC.Base.Eq Datenbank.Praedikat In module Datenbank: GHC.Base.Eq Datenbank.Praedikat Duplicate instance declarations: In module Datenbank: GHC.Show.Show Datenbank.Praedikat In module Datenbank: GHC.Show.Show Datenbank.Praedikat make: *** [mtest] Fehler 1 Greetings, Volker
bugrep.tar.gz
Description: application/tgz
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