diff options
Diffstat (limited to 'compiler/deSugar/Check.hs')
| -rw-r--r-- | compiler/deSugar/Check.hs | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/compiler/deSugar/Check.hs b/compiler/deSugar/Check.hs index 81832c8982..db3a501fcf 100644 --- a/compiler/deSugar/Check.hs +++ b/compiler/deSugar/Check.hs @@ -1030,7 +1030,7 @@ translatePat fam_insts pat = case pat of -- -- - Otherwise, we treat the `ListPat` as ordinary view pattern. -- - -- See Trac #14547, especially comment#9 and comment#10. + -- See #14547, especially comment#9 and comment#10. -- -- Here we construct CanFailPmPat directly, rather can construct a view -- pattern and do further translation as an optimization, for the reason, @@ -1100,7 +1100,7 @@ from translation in pattern matcher. `HsOverLit` inside `NPat` to HsIntPrim/HsWordPrim. If we do the same thing in `translatePat` as in `tidyNPat`, the exhaustiveness checker will fail to match the literals patterns correctly. See - Trac #14546. + #14546. In Note [Undecidable Equality for Overloaded Literals], we say: "treat overloaded literals that look different as different", but previously we @@ -1121,7 +1121,7 @@ from translation in pattern matcher. in value position as PmOLit, but translate the 0 and 1 in pattern position as PmSLit. The inconsistency leads to the failure of eqPmLit to detect the equality and report warning of "Pattern match is redundant" on pattern 0, - as reported in Trac #14546. In this patch we remove the specialization of + as reported in #14546. In this patch we remove the specialization of OverLit patterns, and keep the overloaded number literal in pattern as it is to maintain the consistency. We know nothing about the `fromInteger` method (see Note [Undecidable Equality for Overloaded Literals]). Now we @@ -1141,7 +1141,7 @@ from translation in pattern matcher. non-overloaded string values are translated to PmSLit. However the string patterns, both overloaded and non-overloaded, are translated to list of characters. The inconsistency leads to wrong warnings about redundant and - non-exhaustive pattern matching warnings, as reported in Trac #14546. + non-exhaustive pattern matching warnings, as reported in #14546. In order to catch the redundant pattern in following case: @@ -1167,7 +1167,7 @@ from translation in pattern matcher. We must ensure that doing the same translation to literal values and patterns in `translatePat` and `hsExprToPmExpr`. The previous inconsistent work led to - Trac #14546. + #14546. -} -- | Translate a list of patterns (Note: each pattern is translated @@ -2511,7 +2511,7 @@ dsPmWarn dflags ctx@(DsMatchContext kind loc) pm_result {- Note [Inaccessible warnings for record updates] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -Consider (Trac #12957) +Consider (#12957) data T a where T1 :: { x :: Int } -> T Bool T2 :: { x :: Int } -> T a |