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| author | Michael Walker <mike@barrucadu.co.uk> | 2016-02-25 17:34:07 +0100 |
|---|---|---|
| committer | Herbert Valerio Riedel <hvr@gnu.org> | 2016-02-25 23:44:08 +0100 |
| commit | bb5afd3c274011c5ea302210b4c290ec1f83209c (patch) | |
| tree | b6c2000e466e894207ce28dc65346853120f8548 /compiler/typecheck/TcAnnotations.hs | |
| parent | 1badf157be3b7f604ba1ac64d2ea044d783e6e50 (diff) | |
| download | haskell-bb5afd3c274011c5ea302210b4c290ec1f83209c.tar.gz | |
Print which warning-flag controls an emitted warning
Both gcc and clang tell which warning flag a reported warning can be
controlled with, this patch makes ghc do the same. More generally, this
allows for annotated compiler output, where an optional annotation is
displayed in brackets after the severity.
This also adds a new flag `-f(no-)show-warning-groups` to control
whether to show which warning-group (such as `-Wall` or `-Wcompat`)
a warning belongs to. This flag is on by default.
This implements #10752
Reviewed By: quchen, bgamari, hvr
Differential Revision: https://phabricator.haskell.org/D1943
Diffstat (limited to 'compiler/typecheck/TcAnnotations.hs')
| -rw-r--r-- | compiler/typecheck/TcAnnotations.hs | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/compiler/typecheck/TcAnnotations.hs b/compiler/typecheck/TcAnnotations.hs index b80d5bd236..00dac01227 100644 --- a/compiler/typecheck/TcAnnotations.hs +++ b/compiler/typecheck/TcAnnotations.hs @@ -14,6 +14,8 @@ import {-# SOURCE #-} TcSplice ( runAnnotation ) import Module import DynFlags import Control.Monad ( when ) +#else +import DynFlags ( WarnReason(NoReason) ) #endif import HsSyn @@ -29,7 +31,7 @@ tcAnnotations :: [LAnnDecl Name] -> TcM [Annotation] -- No GHCI; emit a warning (not an error) and ignore. cf Trac #4268 tcAnnotations [] = return [] tcAnnotations anns@(L loc _ : _) - = do { setSrcSpan loc $ addWarnTc $ + = do { setSrcSpan loc $ addWarnTc NoReason $ (text "Ignoring ANN annotation" <> plural anns <> comma <+> text "because this is a stage-1 compiler or doesn't support GHCi") ; return [] } |