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| author | Ben Gamari <ben@smart-cactus.org> | 2016-05-22 12:32:02 +0200 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2016-05-22 12:43:59 +0200 |
| commit | c03dad1c5d4ab7c44234d145ba9c13f17a918201 (patch) | |
| tree | 1d14b6595fe9c5434ffaf3618f71095b4c435555 /haddock-api | |
| parent | ebd41f6eb98fdbd43e25fdd574271de9159cde11 (diff) | |
Create: Better debug output
For tracking down #505
Diffstat (limited to 'haddock-api')
| -rw-r--r-- | haddock-api/src/Haddock/Interface/Create.hs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/haddock-api/src/Haddock/Interface/Create.hs b/haddock-api/src/Haddock/Interface/Create.hs index a351c0dc..8d561d68 100644 --- a/haddock-api/src/Haddock/Interface/Create.hs +++ b/haddock-api/src/Haddock/Interface/Create.hs @@ -789,7 +789,10 @@ extractDecl name mdl decl [s0] -> let (n, tyvar_names) = (tcdName d, tyClDeclTyVars d) L pos sig = addClassContext n tyvar_names s0 in L pos (SigD sig) - _ -> error "internal: extractDecl (ClassDecl)" + _ -> O.pprPanic "extractDecl" (O.text "Ambiguous decl for" O.<+> O.ppr name O.<+> O.text "in class:" + O.$$ O.nest 4 (O.ppr d) + O.$$ O.text "Matches:" + O.$$ O.nest 4 (O.ppr matches)) TyClD d@DataDecl {} -> let (n, tyvar_tys) = (tcdName d, lHsQTyVarsToTypes (tyClDeclTyVars d)) in SigD <$> extractRecSel name mdl n tyvar_tys (dd_cons (tcdDataDefn d)) |