X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fmain%2FStaticFlags.hs;h=96f8b4b715f0b70d4afb6b9c8639e9c6da596dc5;hb=b00e3a6c0a82a8af3238d677f798d812cd7fd49f;hp=e03d6810ca4afd50fc67597b9cea21d281698a5d;hpb=38113ad2138652700dc4461cd2d7ab073f9716ac;p=ghc-hetmet.git

diff --git a/compiler/main/StaticFlags.hs b/compiler/main/StaticFlags.hs
index e03d681..96f8b4b 100644
--- a/compiler/main/StaticFlags.hs
+++ b/compiler/main/StaticFlags.hs
@@ -237,8 +237,17 @@ opt_PprCaseAsLet :: Bool
 opt_PprCaseAsLet		= lookUp   (fsLit "-dppr-case-as-let")
 
 -- | Set the maximum width of the dumps
+--   If GHC's command line options are bad then the options parser uses the
+--   pretty printer display the error message. In this case the staticFlags
+--   won't be initialized yet, so we must check for this case explicitly 
+--   and return the default value.
 opt_PprCols :: Int
-opt_PprCols			= lookup_def_int "-dppr-cols" 100
+opt_PprCols 
+ = unsafePerformIO
+ $ do	ready <- readIORef v_opt_C_ready
+	if (not ready)
+		then return 100
+		else return $ lookup_def_int "-dppr-cols" 100
 
 
 opt_PprStyle_Debug  :: Bool