Hi, just a quick note: This commit message is rather unhelpful. In this case it is not a big deal (the patch is quite self-explanatory), but I recommend you to manually clean up arc-generated commit messages before pushing. Also remember when creating a Phab DR that whatever you put in the summary will be part of the default commit message. Greetings, Joachim (who does more complaining than actual contributing these days...) Am Sonntag, den 30.11.2014, 19:17 +0000 schrieb git@git.haskell.org:

Repository : ssh://git@git.haskell.org/ghc

On branch : master Link : http://ghc.haskell.org/trac/ghc/changeset/780b061ce2aea4722d1a5d0e46fd4ed8ee...

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commit 780b061ce2aea4722d1a5d0e46fd4ed8ee2641d6 Author: Sivaram Balakrishnan Date: Sun Nov 30 13:05:56 2014 -0600

compiler: fix trac issue #8815

Summary: This patch changes the error message as suggested in trac issue #8815 comments.

Reviewers: jstolarek, austin

Reviewed By: jstolarek, austin

Subscribers: jstolarek, thomie, carter

Differential Revision: https://phabricator.haskell.org/D533

GHC Trac Issues: #8815

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780b061ce2aea4722d1a5d0e46fd4ed8ee2641d6 compiler/typecheck/TcPat.lhs | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler/typecheck/TcPat.lhs b/compiler/typecheck/TcPat.lhs index 3b7b5df..58e8bae 100644 --- a/compiler/typecheck/TcPat.lhs +++ b/compiler/typecheck/TcPat.lhs @@ -796,7 +796,8 @@ tcDataConPat penv (L con_span con_name) data_con pat_ty arg_pats thing_inside ; gadts_on <- xoptM Opt_GADTs ; families_on <- xoptM Opt_TypeFamilies ; checkTc (no_equalities || gadts_on || families_on) - (ptext (sLit "A pattern match on a GADT requires GADTs or TypeFamilies")) + (text "A pattern match on a GADT requires the" <+> + text "GADTs or TypeFamilies language extension") -- Trac #2905 decided that a *pattern-match* of a GADT -- should require the GADT language flag. -- Re TypeFamilies see also #7156

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-- Joachim “nomeata” Breitner mail@joachim-breitner.de • http://www.joachim-breitner.de/ Jabber: nomeata@joachim-breitner.de • GPG-Key: 0xF0FBF51F Debian Developer: nomeata@debian.org