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Diffstat (limited to 'compiler/typecheck/TcSimplify.hs')
| -rw-r--r-- | compiler/typecheck/TcSimplify.hs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/typecheck/TcSimplify.hs b/compiler/typecheck/TcSimplify.hs index 34bc4a8448..37015b30bc 100644 --- a/compiler/typecheck/TcSimplify.hs +++ b/compiler/typecheck/TcSimplify.hs @@ -693,7 +693,7 @@ It does *not* reduce type or data family applications or look through newtypes. Why is this useful? As one example, when coverage-checking an EmptyCase expression, it's possible that the type of the scrutinee will only reduce if some local equalities are solved for. See "Wrinkle: Local equalities" -in Note [Type normalisation for EmptyCase] in Check. +in Note [Type normalisation] in Check. To accomplish its stated goal, tcNormalise first feeds the local constraints into solveSimpleGivens, then stuffs the argument type in a CHoleCan, and feeds |