diff options
| -rw-r--r-- | compiler/GHC/Iface/UpdateIdInfos.hs | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/compiler/GHC/Iface/UpdateIdInfos.hs b/compiler/GHC/Iface/UpdateIdInfos.hs index 0c70b5caeb..7e0be83a5f 100644 --- a/compiler/GHC/Iface/UpdateIdInfos.hs +++ b/compiler/GHC/Iface/UpdateIdInfos.hs @@ -62,9 +62,13 @@ updateModDetailsIdInfos cg_infos mod_details = -- Rules -------------------------------------------------------------------------------- +-- N.B. we do this strictly to avoid building thunks which will later +-- keep TypeEnvs around (see #19464). updateRuleIdInfos :: TypeEnv -> CoreRule -> CoreRule updateRuleIdInfos _ rule@BuiltinRule{} = rule -updateRuleIdInfos type_env Rule{ .. } = Rule { ru_rhs = updateGlobalIds type_env ru_rhs, .. } +updateRuleIdInfos type_env Rule{ .. } = + let !rhs = updateGlobalIds type_env ru_rhs + in Rule { ru_rhs = rhs, .. } -------------------------------------------------------------------------------- -- Instances |