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| author | Matthew Pickering <matthewtpickering@gmail.com> | 2021-02-23 14:14:38 +0000 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2021-02-28 05:39:41 -0500 |
| commit | 035d983dfa217bf8784b86e78d6024a3ca1a3f4f (patch) | |
| tree | 7fb0ee9a8a3cf987aca99cf216d94609221aee58 /compiler/GHC/Tc/TyCl.hs | |
| parent | 856929a5fa93e9fb13bd9efcb9049054fb1bde72 (diff) | |
| download | haskell-035d983dfa217bf8784b86e78d6024a3ca1a3f4f.tar.gz | |
Fix two places where TcGblEnv was retained
Found with ghc-debug on the ManyConstructors test
Diffstat (limited to 'compiler/GHC/Tc/TyCl.hs')
| -rw-r--r-- | compiler/GHC/Tc/TyCl.hs | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/compiler/GHC/Tc/TyCl.hs b/compiler/GHC/Tc/TyCl.hs index 6f7a7c548c..45d38fd87d 100644 --- a/compiler/GHC/Tc/TyCl.hs +++ b/compiler/GHC/Tc/TyCl.hs @@ -239,7 +239,9 @@ tcTyClDecls tyclds kisig_env role_annots -- loops yet and could fall into a black hole. ; fixM $ \ ~(rec_tyclss, _) -> do { tcg_env <- getGblEnv - ; let roles = inferRoles (tcg_src tcg_env) role_annots rec_tyclss + -- Forced so we don't retain a reference to the TcGblEnv + ; let !src = tcg_src tcg_env + roles = inferRoles src role_annots rec_tyclss -- Populate environment with knot-tied ATyCon for TyCons -- NB: if the decls mention any ill-staged data cons |