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-rw-r--r--src/Haddock/InterfaceFile.hs9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/Haddock/InterfaceFile.hs b/src/Haddock/InterfaceFile.hs
index 9ad22431..22f1e4d1 100644
--- a/src/Haddock/InterfaceFile.hs
+++ b/src/Haddock/InterfaceFile.hs
@@ -57,7 +57,16 @@ binaryInterfaceMagic = 0xD0Cface
-- Instead of adding one, we add three to all version numbers
-- when one of our own (stored) datatypes is changed.
binaryInterfaceVersion :: Word16
+#if __GLASGOW_HASKELL__ == 608 && __GHC_PATCHLEVEL__ == 2
binaryInterfaceVersion = 2
+#endif
+#if __GLASGOW_HASKELL__ == 608 && __GHC_PATCHLEVEL__ == 3
+binaryInterfaceVersion = 3
+#endif
+#if __GLASGOW_HASKELL__ >= 609
+binaryInterfaceVersion = 4
+#endif
+
initBinMemSize :: Int
initBinMemSize = 1024*1024