Use the correct flag for controlling scoped type variables in an instance decl

diff --git a/compiler/rename/RnSource.lhs b/compiler/rename/RnSource.lhs
index 71415fa..028970c 100644 (file)
--- a/compiler/rename/RnSource.lhs
+++ b/compiler/rename/RnSource.lhs
@@ -378,11 +378,11 @@ type variable environment iff -fglasgow-exts
 
 \begin{code}
 extendTyVarEnvForMethodBinds tyvars thing_inside
-  = doptM Opt_GlasgowExts                      `thenM` \ opt_GlasgowExts ->
-    if opt_GlasgowExts then
-       extendTyVarEnvFVRn (map hsLTyVarName tyvars) thing_inside
-    else
-       thing_inside
+  = do { scoped_tvs <- doptM Opt_ScopedTypeVariables
+       ; if scoped_tvs then
+               extendTyVarEnvFVRn (map hsLTyVarName tyvars) thing_inside
+         else
+               thing_inside }
 \end{code}
 
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