Add a WARNING pragma

[ghc-hetmet.git] / compiler / deSugar / Desugar.lhs

diff --git a/compiler/deSugar/Desugar.lhs b/compiler/deSugar/Desugar.lhs
index eeaa154..80b0dcb 100644 (file)
--- a/compiler/deSugar/Desugar.lhs
+++ b/compiler/deSugar/Desugar.lhs
@@ -38,6 +38,7 @@ import SrcLoc
 import Maybes
 import FastString
 import Coverage
+
 import Data.IORef
 \end{code}
 
@@ -63,7 +64,7 @@ deSugar hsc_env
                            tcg_fix_env      = fix_env,
                            tcg_inst_env     = inst_env,
                            tcg_fam_inst_env = fam_inst_env,
-                           tcg_deprecs      = deprecs,
+                           tcg_warns      = warns,
                            tcg_binds        = binds,
                            tcg_fords        = fords,
                            tcg_rules        = rules,
@@ -128,7 +129,7 @@ deSugar hsc_env
                mg_dir_imps     = imp_mods imports,
                mg_rdr_env      = rdr_env,
                mg_fix_env      = fix_env,
-               mg_deprecs      = deprecs,
+               mg_warns        = warns,
                mg_types        = type_env,
                mg_insts        = insts,
                mg_fam_insts    = fam_insts,
@@ -149,13 +150,15 @@ mkAutoScc mod exports
   | not opt_SccProfilingOn     -- No profiling
   = NoSccs             
   | opt_AutoSccsOnAllToplevs   -- Add auto-scc on all top-level things
-  = AddSccs mod (\_ -> True)
+  = AddSccs mod (\id -> not $ isDerivedOccName $ getOccName id)
+    -- See #1641.  This is pretty yucky, but I can't see a better way
+    -- to identify compiler-generated Ids, and at least this should
+    -- catch them all.
   | opt_AutoSccsOnExportedToplevs      -- Only on exported things
   = AddSccs mod (\id -> idName id `elemNameSet` exports)
   | otherwise
   = NoSccs
 
-
 deSugarExpr :: HscEnv
            -> Module -> GlobalRdrEnv -> TypeEnv 
            -> LHsExpr Id