%
% (c) The GRASP/AQUA Project, Glasgow University, 1993-2000
%
-
-\section[GHC_Main]{Main driver for Glasgow Haskell compiler}
-
\begin{code}
+-- | Main driver for the compiling plain Haskell source code.
+--
+-- This module implements compilation of a Haskell-only source file. It is
+-- /not/ concerned with preprocessing of source files; this is handled in
+-- "DriverPipeline".
+--
module HscMain
( newHscEnv, hscCmmFile
, hscParseIdentifier
, hscSimplify
, hscNormalIface, hscWriteIface, hscGenHardCode
#ifdef GHCI
- , hscStmt, hscTcExpr, hscKcType
+ , hscStmt, hscTcExpr, hscImport, hscKcType
, compileExpr
#endif
+ , HsCompiler(..)
+ , hscOneShotCompiler, hscNothingCompiler
+ , hscInteractiveCompiler, hscBatchCompiler
, hscCompileOneShot -- :: Compiler HscStatus
, hscCompileBatch -- :: Compiler (HscStatus, ModIface, ModDetails)
, hscCompileNothing -- :: Compiler (HscStatus, ModIface, ModDetails)
, hscCompileInteractive -- :: Compiler (InteractiveStatus, ModIface, ModDetails)
+ , hscCheckRecompBackend
, HscStatus' (..)
- , InteractiveStatus, NothingStatus, OneShotStatus, BatchStatus
+ , InteractiveStatus, HscStatus
-- The new interface
, hscParse
import {- Kind parts of -} Type ( Kind )
import CoreLint ( lintUnfolding )
import DsMeta ( templateHaskellNames )
-import SrcLoc ( SrcSpan, noSrcLoc, interactiveSrcLoc, srcLocSpan, noSrcSpan )
+import SrcLoc ( SrcSpan, noSrcLoc, interactiveSrcLoc, srcLocSpan, noSrcSpan, unLoc )
import VarSet
import VarEnv ( emptyTidyEnv )
#endif
import HscTypes
import MkExternalCore ( emitExternalCore )
import FastString
-import LazyUniqFM ( emptyUFM )
+import UniqFM ( emptyUFM )
import UniqSupply ( initUs_ )
import Bag ( unitBag )
import Exception
-import MonadUtils
+-- import MonadUtils
import Control.Monad
-import System.IO
+-- import System.IO
import Data.IORef
\end{code}
#include "HsVersions.h"
%************************************************************************
\begin{code}
-newHscEnv :: DynFlags -> IO HscEnv
-newHscEnv dflags
+newHscEnv :: GhcApiCallbacks -> DynFlags -> IO HscEnv
+newHscEnv callbacks dflags
= do { eps_var <- newIORef initExternalPackageState
; us <- mkSplitUniqSupply 'r'
; nc_var <- newIORef (initNameCache us knownKeyNames)
; mlc_var <- newIORef emptyModuleEnv
; optFuel <- initOptFuelState
; return (HscEnv { hsc_dflags = dflags,
+ hsc_callbacks = callbacks,
hsc_targets = [],
hsc_mod_graph = [],
hsc_IC = emptyInteractiveContext,
Just b -> return b
Nothing -> liftIO $ hGetStringBuffer src_filename
- let loc = mkSrcLoc (mkFastString src_filename) 1 0
+ let loc = mkSrcLoc (mkFastString src_filename) 1 1
- case unP parseModule (mkPState buf loc dflags) of
+ case unP parseModule (mkPState dflags buf loc) of
PFailed span err ->
throwOneError (mkPlainErrMsg span err)
-- exception/signal an error.
type RenamedStuff =
(Maybe (HsGroup Name, [LImportDecl Name], Maybe [LIE Name],
- Maybe (HsDoc Name), HaddockModInfo Name))
+ Maybe LHsDocString))
-- | Rename and typecheck a module, additionally returning the renamed syntax
hscTypecheckRename ::
<- {-# SCC "Typecheck-Rename" #-}
ioMsgMaybe $ tcRnModule hsc_env (ms_hsc_src mod_summary) True rdr_module
- let rn_info = do decl <- tcg_rn_decls tc_result
- imports <- tcg_rn_imports tc_result
- let exports = tcg_rn_exports tc_result
- let doc = tcg_doc tc_result
- let hmi = tcg_hmi tc_result
- return (decl,imports,exports,doc,hmi)
+ let -- This 'do' is in the Maybe monad!
+ rn_info = do { decl <- tcg_rn_decls tc_result
+ ; let imports = tcg_rn_imports tc_result
+ exports = tcg_rn_exports tc_result
+ doc_hdr = tcg_doc_hdr tc_result
+ ; return (decl,imports,exports,doc_hdr) }
return (tc_result, rn_info)
-- functional dependencies, we have to parameterise the typeclass over the
-- result type. Therefore we need to artificially distinguish some types. We
-- do this by adding type tags which will simply be ignored by the caller.
-data HscOneShotTag = HscOneShotTag
-data HscNothingTag = HscNothingTag
-
-type OneShotStatus = HscStatus' HscOneShotTag
-type BatchStatus = HscStatus' ()
-type InteractiveStatus = HscStatus' (CompiledByteCode, ModBreaks)
-type NothingStatus = HscStatus' HscNothingTag
+type HscStatus = HscStatus' ()
+type InteractiveStatus = HscStatus' (Maybe (CompiledByteCode, ModBreaks))
+ -- INVARIANT: result is @Nothing@ <=> input was a boot file
-type OneShotResult = OneShotStatus
-type BatchResult = (BatchStatus, ModIface, ModDetails)
-type NothingResult = (NothingStatus, ModIface, ModDetails)
+type OneShotResult = HscStatus
+type BatchResult = (HscStatus, ModIface, ModDetails)
+type NothingResult = (HscStatus, ModIface, ModDetails)
type InteractiveResult = (InteractiveStatus, ModIface, ModDetails)
-- FIXME: The old interface and module index are only using in 'batch' and
-> Maybe (Int,Int) -- Just (i,n) <=> module i of n (for msgs)
-> m result
-class HsCompiler a where
- -- | The main interface.
- hscCompile :: GhcMonad m =>
- HscEnv -> ModSummary -> Bool
- -> Maybe ModIface -> Maybe (Int, Int)
- -> m a
+data HsCompiler a
+ = HsCompiler {
+ -- | Called when no recompilation is necessary.
+ hscNoRecomp :: GhcMonad m =>
+ ModIface -> m a,
- -- | Called when no recompilation is necessary.
- hscNoRecomp :: GhcMonad m =>
- ModIface -> m a
+ -- | Called to recompile the module.
+ hscRecompile :: GhcMonad m =>
+ ModSummary -> Maybe Fingerprint -> m a,
- -- | Called to recompile the module.
- hscRecompile :: GhcMonad m =>
- ModSummary -> Maybe Fingerprint -> m a
+ hscBackend :: GhcMonad m =>
+ TcGblEnv -> ModSummary -> Maybe Fingerprint -> m a,
- -- | Code generation for Boot modules.
- hscGenBootOutput :: GhcMonad m =>
- TcGblEnv -> ModSummary -> Maybe Fingerprint -> m a
+ -- | Code generation for Boot modules.
+ hscGenBootOutput :: GhcMonad m =>
+ TcGblEnv -> ModSummary -> Maybe Fingerprint -> m a,
- -- | Code generation for normal modules.
- hscGenOutput :: GhcMonad m =>
- ModGuts -> ModSummary -> Maybe Fingerprint -> m a
+ -- | Code generation for normal modules.
+ hscGenOutput :: GhcMonad m =>
+ ModGuts -> ModSummary -> Maybe Fingerprint -> m a
+ }
-
-genericHscCompile :: (HsCompiler a, GhcMonad m) =>
- (Maybe (Int,Int) -> Bool -> ModSummary -> m ())
+genericHscCompile :: GhcMonad m =>
+ HsCompiler a
+ -> (Maybe (Int,Int) -> Bool -> ModSummary -> m ())
-> HscEnv -> ModSummary -> Bool
-> Maybe ModIface -> Maybe (Int, Int)
-> m a
-genericHscCompile hscMessage
+genericHscCompile compiler hscMessage
hsc_env mod_summary source_unchanged
mb_old_iface0 mb_mod_index =
withTempSession (\_ -> hsc_env) $ do
case mb_checked_iface of
Just iface | not recomp_reqd
-> do hscMessage mb_mod_index False mod_summary
- hscNoRecomp iface
+ hscNoRecomp compiler iface
_otherwise
-> do hscMessage mb_mod_index True mod_summary
- hscRecompile mod_summary mb_old_hash
+ hscRecompile compiler mod_summary mb_old_hash
-genericHscRecompile :: (HsCompiler a, GhcMonad m) =>
- ModSummary -> Maybe Fingerprint
+hscCheckRecompBackend :: HsCompiler a -> TcGblEnv -> Compiler a
+hscCheckRecompBackend compiler tc_result
+ hsc_env mod_summary source_unchanged mb_old_iface _m_of_n =
+ withTempSession (\_ -> hsc_env) $ do
+ (recomp_reqd, mb_checked_iface)
+ <- {-# SCC "checkOldIface" #-}
+ liftIO $ checkOldIface hsc_env mod_summary
+ source_unchanged mb_old_iface
+
+ let mb_old_hash = fmap mi_iface_hash mb_checked_iface
+ case mb_checked_iface of
+ Just iface | not recomp_reqd
+ -> hscNoRecomp compiler iface{ mi_globals = Just (tcg_rdr_env tc_result) }
+ _otherwise
+ -> hscBackend compiler tc_result mod_summary mb_old_hash
+
+genericHscRecompile :: GhcMonad m =>
+ HsCompiler a
+ -> ModSummary -> Maybe Fingerprint
-> m a
-genericHscRecompile mod_summary mb_old_hash
+genericHscRecompile compiler mod_summary mb_old_hash
| ExtCoreFile <- ms_hsc_src mod_summary =
panic "GHC does not currently support reading External Core files"
| otherwise = do
tc_result <- hscFileFrontEnd mod_summary
- case ms_hsc_src mod_summary of
- HsBootFile ->
- hscGenBootOutput tc_result mod_summary mb_old_hash
- _other -> do
- guts <- hscDesugar mod_summary tc_result
- hscGenOutput guts mod_summary mb_old_hash
+ hscBackend compiler tc_result mod_summary mb_old_hash
+
+genericHscBackend :: GhcMonad m =>
+ HsCompiler a
+ -> TcGblEnv -> ModSummary -> Maybe Fingerprint
+ -> m a
+genericHscBackend compiler tc_result mod_summary mb_old_hash
+ | HsBootFile <- ms_hsc_src mod_summary =
+ hscGenBootOutput compiler tc_result mod_summary mb_old_hash
+ | otherwise = do
+ guts <- hscDesugar mod_summary tc_result
+ hscGenOutput compiler guts mod_summary mb_old_hash
--------------------------------------------------------------
-- Compilers
--------------------------------------------------------------
-instance HsCompiler OneShotResult where
-
- hscCompile hsc_env mod_summary src_changed mb_old_iface mb_i_of_n = do
- -- One-shot mode needs a knot-tying mutable variable for interface files.
- -- See TcRnTypes.TcGblEnv.tcg_type_env_var.
- type_env_var <- liftIO $ newIORef emptyNameEnv
- let
- mod = ms_mod mod_summary
- hsc_env' = hsc_env{ hsc_type_env_var = Just (mod, type_env_var) }
- ---
- genericHscCompile oneShotMsg hsc_env' mod_summary src_changed
- mb_old_iface mb_i_of_n
-
- hscNoRecomp _old_iface = do
- withSession (liftIO . dumpIfaceStats)
- return HscNoRecomp
-
- hscRecompile = genericHscRecompile
-
- hscGenBootOutput tc_result mod_summary mb_old_iface = do
- (iface, changed, _) <- hscSimpleIface tc_result mb_old_iface
- hscWriteIface iface changed mod_summary
- return (HscRecomp False HscOneShotTag)
-
- hscGenOutput guts0 mod_summary mb_old_iface = do
- guts <- hscSimplify guts0
- (iface, changed, _details, cgguts)
- <- hscNormalIface guts mb_old_iface
- hscWriteIface iface changed mod_summary
- hasStub <- hscGenHardCode cgguts mod_summary
- return (HscRecomp hasStub HscOneShotTag)
+hscOneShotCompiler :: HsCompiler OneShotResult
+hscOneShotCompiler =
+ HsCompiler {
+
+ hscNoRecomp = \_old_iface -> do
+ withSession (liftIO . dumpIfaceStats)
+ return HscNoRecomp
+
+ , hscRecompile = genericHscRecompile hscOneShotCompiler
+
+ , hscBackend = \ tc_result mod_summary mb_old_hash -> do
+ hsc_env <- getSession
+ case hscTarget (hsc_dflags hsc_env) of
+ HscNothing -> return (HscRecomp False ())
+ _otherw -> genericHscBackend hscOneShotCompiler
+ tc_result mod_summary mb_old_hash
+
+ , hscGenBootOutput = \tc_result mod_summary mb_old_iface -> do
+ (iface, changed, _) <- hscSimpleIface tc_result mb_old_iface
+ hscWriteIface iface changed mod_summary
+ return (HscRecomp False ())
+
+ , hscGenOutput = \guts0 mod_summary mb_old_iface -> do
+ guts <- hscSimplify guts0
+ (iface, changed, _details, cgguts)
+ <- hscNormalIface guts mb_old_iface
+ hscWriteIface iface changed mod_summary
+ hasStub <- hscGenHardCode cgguts mod_summary
+ return (HscRecomp hasStub ())
+ }
-- Compile Haskell, boot and extCore in OneShot mode.
-hscCompileOneShot :: Compiler OneShotStatus
-hscCompileOneShot = hscCompile
+hscCompileOneShot :: Compiler OneShotResult
+hscCompileOneShot hsc_env mod_summary src_changed mb_old_iface mb_i_of_n = do
+ -- One-shot mode needs a knot-tying mutable variable for interface
+ -- files. See TcRnTypes.TcGblEnv.tcg_type_env_var.
+ type_env_var <- liftIO $ newIORef emptyNameEnv
+ let
+ mod = ms_mod mod_summary
+ hsc_env' = hsc_env{ hsc_type_env_var = Just (mod, type_env_var) }
+ ---
+ genericHscCompile hscOneShotCompiler
+ oneShotMsg hsc_env' mod_summary src_changed
+ mb_old_iface mb_i_of_n
+
--------------------------------------------------------------
-instance HsCompiler BatchResult where
+hscBatchCompiler :: HsCompiler BatchResult
+hscBatchCompiler =
+ HsCompiler {
- hscCompile = genericHscCompile batchMsg
+ hscNoRecomp = \iface -> do
+ details <- genModDetails iface
+ return (HscNoRecomp, iface, details)
- hscNoRecomp iface = do
- details <- genModDetails iface
- return (HscNoRecomp, iface, details)
+ , hscRecompile = genericHscRecompile hscBatchCompiler
- hscRecompile = genericHscRecompile
+ , hscBackend = genericHscBackend hscBatchCompiler
- hscGenBootOutput tc_result mod_summary mb_old_iface = do
- (iface, changed, details)
- <- hscSimpleIface tc_result mb_old_iface
- hscWriteIface iface changed mod_summary
- return (HscRecomp False (), iface, details)
+ , hscGenBootOutput = \tc_result mod_summary mb_old_iface -> do
+ (iface, changed, details)
+ <- hscSimpleIface tc_result mb_old_iface
+ hscWriteIface iface changed mod_summary
+ return (HscRecomp False (), iface, details)
- hscGenOutput guts0 mod_summary mb_old_iface = do
- guts <- hscSimplify guts0
- (iface, changed, details, cgguts)
- <- hscNormalIface guts mb_old_iface
- hscWriteIface iface changed mod_summary
- hasStub <- hscGenHardCode cgguts mod_summary
- return (HscRecomp hasStub (), iface, details)
+ , hscGenOutput = \guts0 mod_summary mb_old_iface -> do
+ guts <- hscSimplify guts0
+ (iface, changed, details, cgguts)
+ <- hscNormalIface guts mb_old_iface
+ hscWriteIface iface changed mod_summary
+ hasStub <- hscGenHardCode cgguts mod_summary
+ return (HscRecomp hasStub (), iface, details)
+ }
-- Compile Haskell, boot and extCore in batch mode.
-hscCompileBatch :: Compiler (BatchStatus, ModIface, ModDetails)
-hscCompileBatch = hscCompile
+hscCompileBatch :: Compiler (HscStatus, ModIface, ModDetails)
+hscCompileBatch = genericHscCompile hscBatchCompiler batchMsg
--------------------------------------------------------------
-instance HsCompiler InteractiveResult where
-
- hscCompile = genericHscCompile batchMsg
+hscInteractiveCompiler :: HsCompiler InteractiveResult
+hscInteractiveCompiler =
+ HsCompiler {
+ hscNoRecomp = \iface -> do
+ details <- genModDetails iface
+ return (HscNoRecomp, iface, details)
- hscNoRecomp iface = do
- details <- genModDetails iface
- return (HscNoRecomp, iface, details)
+ , hscRecompile = genericHscRecompile hscInteractiveCompiler
- hscRecompile = genericHscRecompile
+ , hscBackend = genericHscBackend hscInteractiveCompiler
- hscGenBootOutput _ _ _ = panic "hscCompileInteractive: HsBootFile"
+ , hscGenBootOutput = \tc_result _mod_summary mb_old_iface -> do
+ (iface, _changed, details) <- hscSimpleIface tc_result mb_old_iface
+ return (HscRecomp False Nothing, iface, details)
- hscGenOutput guts0 mod_summary mb_old_iface = do
- guts <- hscSimplify guts0
- (iface, _changed, details, cgguts)
- <- hscNormalIface guts mb_old_iface
- hscInteractive (iface, details, cgguts) mod_summary
+ , hscGenOutput = \guts0 mod_summary mb_old_iface -> do
+ guts <- hscSimplify guts0
+ (iface, _changed, details, cgguts)
+ <- hscNormalIface guts mb_old_iface
+ hscInteractive (iface, details, cgguts) mod_summary
+ }
-- Compile Haskell, extCore to bytecode.
hscCompileInteractive :: Compiler (InteractiveStatus, ModIface, ModDetails)
-hscCompileInteractive = hscCompile
+hscCompileInteractive = genericHscCompile hscInteractiveCompiler batchMsg
--------------------------------------------------------------
-instance HsCompiler NothingResult where
+hscNothingCompiler :: HsCompiler NothingResult
+hscNothingCompiler =
+ HsCompiler {
+ hscNoRecomp = \iface -> do
+ details <- genModDetails iface
+ return (HscNoRecomp, iface, details)
- hscCompile = genericHscCompile batchMsg
+ , hscRecompile = genericHscRecompile hscNothingCompiler
- hscNoRecomp iface = do
- details <- genModDetails iface
- return (HscNoRecomp, iface, details)
+ , hscBackend = \tc_result _mod_summary mb_old_iface -> do
+ (iface, _changed, details) <- hscSimpleIface tc_result mb_old_iface
+ return (HscRecomp False (), iface, details)
- hscRecompile mod_summary mb_old_hash
- | ExtCoreFile <- ms_hsc_src mod_summary =
- panic "hscCompileNothing: cannot do external core"
- | otherwise = do
- tc_result <- hscFileFrontEnd mod_summary
- hscGenBootOutput tc_result mod_summary mb_old_hash
+ , hscGenBootOutput = \_ _ _ ->
+ panic "hscCompileNothing: hscGenBootOutput should not be called"
- hscGenBootOutput tc_result _mod_summary mb_old_iface = do
- (iface, _changed, details) <- hscSimpleIface tc_result mb_old_iface
- return (HscRecomp False HscNothingTag, iface, details)
-
- hscGenOutput _ _ _ =
- panic "hscCompileNothing: hscGenOutput should not be called"
+ , hscGenOutput = \_ _ _ ->
+ panic "hscCompileNothing: hscGenOutput should not be called"
+ }
-- Type-check Haskell and .hs-boot only (no external core)
-hscCompileNothing :: Compiler (NothingStatus, ModIface, ModDetails)
-hscCompileNothing = hscCompile
+hscCompileNothing :: Compiler (HscStatus, ModIface, ModDetails)
+hscCompileNothing = genericHscCompile hscNothingCompiler batchMsg
--------------------------------------------------------------
-- NoRecomp handlers
then do cmms <- tryNewCodeGen hsc_env this_mod data_tycons
dir_imps cost_centre_info
stg_binds hpc_info
- pprTrace "cmms" (ppr cmms) $ return cmms
+ return cmms
else {-# SCC "CodeGen" #-}
codeGen dflags this_mod data_tycons
dir_imps cost_centre_info
stg_binds hpc_info
--- Optionally run experimental Cmm transformations ---
- cmms <- optionallyConvertAndOrCPS hsc_env cmms
+ -- cmms <- optionallyConvertAndOrCPS hsc_env cmms
-- unless certain dflags are on, the identity function
------------------ Code output -----------------------
rawcmms <- cmmToRawCmm cmms
+ dumpIfSet_dyn dflags Opt_D_dump_cmmz "Raw Cmm" (ppr rawcmms)
(_stub_h_exists, stub_c_exists)
<- codeOutput dflags this_mod location foreign_stubs
dependencies rawcmms
------------------ Create f-x-dynamic C-side stuff ---
(_istub_h_exists, istub_c_exists)
<- outputForeignStubs dflags this_mod location foreign_stubs
- return (HscRecomp istub_c_exists (comp_bc, mod_breaks), iface, details)
+ return (HscRecomp istub_c_exists (Just (comp_bc, mod_breaks))
+ , iface, details)
#else
hscInteractive _ _ = panic "GHC not compiled with interpreter"
#endif
parseCmmFile dflags filename
cmms <- liftIO $ optionallyConvertAndOrCPS hsc_env [cmm]
rawCmms <- liftIO $ cmmToRawCmm cmms
- liftIO $ codeOutput dflags no_mod no_loc NoStubs [] rawCmms
+ _ <- liftIO $ codeOutput dflags no_mod no_loc NoStubs [] rawCmms
return ()
where
no_mod = panic "hscCmmFile: no_mod"
-> HpcInfo
-> IO [Cmm]
tryNewCodeGen hsc_env this_mod data_tycons imported_mods
- cost_centre_info stg_binds hpc_info
- | not (dopt Opt_TryNewCodeGen (hsc_dflags hsc_env))
- = return []
- | otherwise
- = do { let dflags = hsc_dflags hsc_env
+ cost_centre_info stg_binds hpc_info =
+ do { let dflags = hsc_dflags hsc_env
; prog <- StgCmm.codeGen dflags this_mod data_tycons imported_mods
cost_centre_info stg_binds hpc_info
; dumpIfSet_dyn dflags Opt_D_dump_cmmz "Cmm produced by new codegen"
; prog <- return $ map (runTx $ runCmmOpts cmmCfgOptsZ) prog
-- Control flow optimisation
- -- Note: Have to thread the module's SRT through all the procedures
- -- because we greedily build it as we go.
+ -- We are building a single SRT for the entire module, so
+ -- we must thread it through all the procedures as we cps-convert them.
; us <- mkSplitUniqSupply 'S'
; let topSRT = initUs_ us emptySRT
; (topSRT, prog) <- foldM (protoCmmCPSZ hsc_env) (topSRT, []) prog
; prog <- return $ map (runTx $ runCmmOpts cmmCfgOptsZ) (srtToData topSRT : prog)
-- Control flow optimisation, again
- ; dumpIfSet_dyn dflags Opt_D_dump_cmmz "Output Cmm" (pprCmms prog)
-
; let prog' = map cmmOfZgraph prog
- ; dumpIfSet_dyn dflags Opt_D_dump_cmmz "Raw Cmm" (ppr prog')
+ ; dumpIfSet_dyn dflags Opt_D_dump_cmmz "Output Cmm" (ppr prog')
; return prog' }
let cvt = cmmOfZgraph $ cfopts $ chosen_graph
dumpIfSet_dyn dflags Opt_D_dump_cvt_cmm "C-- post-conversion" (ppr cvt)
return cvt
- -- return cmm -- don't use the conversion
myCoreToStg :: DynFlags -> Module -> [CoreBind]
-> IO ( [(StgBinding,[(Id,[Id])])] -- output program
return $ Just (ids, hval)
+hscImport :: GhcMonad m => HscEnv -> String -> m (ImportDecl RdrName)
+hscImport hsc_env str = do
+ (L _ (HsModule{hsmodImports=is})) <- hscParseThing parseModule (hsc_dflags hsc_env) str
+ case is of
+ [i] -> return (unLoc i)
+ _ -> throwOneError (mkPlainErrMsg noSrcSpan (ptext (sLit "parse error in import declaration")))
hscTcExpr -- Typecheck an expression (but don't run it)
:: GhcMonad m =>
buf <- liftIO $ stringToStringBuffer str
- let loc = mkSrcLoc (fsLit "<interactive>") 1 0
+ let loc = mkSrcLoc (fsLit "<interactive>") 1 1
- case unP parser (mkPState buf loc dflags) of
+ case unP parser (mkPState dflags buf loc) of
PFailed span err -> do
let msg = mkPlainErrMsg span err
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