summaryrefslogtreecommitdiff
path: root/compiler
diff options
context:
space:
mode:
Diffstat (limited to 'compiler')
-rw-r--r--compiler/iface/IfaceSyn.lhs5
-rw-r--r--compiler/iface/MkIface.lhs2
-rw-r--r--compiler/iface/TcIface.lhs2
3 files changed, 8 insertions, 1 deletions
diff --git a/compiler/iface/IfaceSyn.lhs b/compiler/iface/IfaceSyn.lhs
index 79e235925e..afd73639f9 100644
--- a/compiler/iface/IfaceSyn.lhs
+++ b/compiler/iface/IfaceSyn.lhs
@@ -275,6 +275,7 @@ data IfaceSynTyConRhs
[IfaceAxBranch] -- for pretty printing purposes only
| IfaceAbstractClosedSynFamilyTyCon
| IfaceSynonymTyCon IfaceType
+ | IfaceBuiltInSynFamTyCon -- for pretty printing purposes only
instance Binary IfaceSynTyConRhs where
put_ bh IfaceOpenSynFamilyTyCon = putByte bh 0
@@ -282,6 +283,8 @@ instance Binary IfaceSynTyConRhs where
>> put_ bh br
put_ bh IfaceAbstractClosedSynFamilyTyCon = putByte bh 2
put_ bh (IfaceSynonymTyCon ty) = putByte bh 3 >> put_ bh ty
+ put_ _ IfaceBuiltInSynFamTyCon
+ = pprPanic "Cannot serialize IfaceBuiltInSynFamTyCon, used for pretty-printing only" empty
get bh = do { h <- getByte bh
; case h of
@@ -1255,6 +1258,7 @@ pprIfaceDecl ss (IfaceSyn { ifName = tycon, ifTyVars = tyvars
pp_rhs IfaceOpenSynFamilyTyCon = ppShowIface ss (ptext (sLit "open"))
pp_rhs IfaceAbstractClosedSynFamilyTyCon = ppShowIface ss (ptext (sLit "closed, abstract"))
pp_rhs (IfaceClosedSynFamilyTyCon _ (_:_)) = ptext (sLit "where")
+ pp_rhs IfaceBuiltInSynFamTyCon = ppShowIface ss (ptext (sLit "built-in"))
pp_rhs _ = panic "pprIfaceDecl syn"
pp_branches (IfaceClosedSynFamilyTyCon ax brs)
@@ -1635,6 +1639,7 @@ freeNamesIfSynRhs IfaceOpenSynFamilyTyCon = emptyNameSet
freeNamesIfSynRhs (IfaceClosedSynFamilyTyCon ax br)
= unitNameSet ax &&& fnList freeNamesIfAxBranch br
freeNamesIfSynRhs IfaceAbstractClosedSynFamilyTyCon = emptyNameSet
+freeNamesIfSynRhs IfaceBuiltInSynFamTyCon = emptyNameSet
freeNamesIfContext :: IfaceContext -> NameSet
freeNamesIfContext = fnList freeNamesIfType
diff --git a/compiler/iface/MkIface.lhs b/compiler/iface/MkIface.lhs
index e3c0ac33d8..f2d2058611 100644
--- a/compiler/iface/MkIface.lhs
+++ b/compiler/iface/MkIface.lhs
@@ -1626,7 +1626,7 @@ tyConToIfaceDecl env tycon
= IfaceSynonymTyCon (tidyToIfaceType env1 ty)
to_ifsyn_rhs (BuiltInSynFamTyCon {})
- = pprPanic "toIfaceDecl: BuiltInFamTyCon" (ppr tycon)
+ = IfaceBuiltInSynFamTyCon
ifaceConDecls (NewTyCon { data_con = con }) = IfNewTyCon (ifaceConDecl con)
diff --git a/compiler/iface/TcIface.lhs b/compiler/iface/TcIface.lhs
index e4a415a099..1a2a447576 100644
--- a/compiler/iface/TcIface.lhs
+++ b/compiler/iface/TcIface.lhs
@@ -494,6 +494,8 @@ tc_iface_decl parent _ (IfaceSyn {ifName = occ_name, ifTyVars = tv_bndrs,
tc_syn_rhs IfaceAbstractClosedSynFamilyTyCon = return AbstractClosedSynFamilyTyCon
tc_syn_rhs (IfaceSynonymTyCon ty) = do { rhs_ty <- tcIfaceType ty
; return (SynonymTyCon rhs_ty) }
+ tc_syn_rhs IfaceBuiltInSynFamTyCon = pprPanic "tc_iface_decl"
+ (ptext (sLit "IfaceBuiltInSynFamTyCon in interface file"))
tc_iface_decl _parent ignore_prags
(IfaceClass {ifCtxt = rdr_ctxt, ifName = tc_occ,