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| author | Matthew Pickering <matthewtpickering@gmail.com> | 2016-10-26 11:19:48 -0400 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2016-10-26 11:19:49 -0400 |
| commit | 23143f60680f78f80762754fe060a3e8c6dc9a01 (patch) | |
| tree | 6468024b284448e9e9d11d14e42ca9e6b4052e52 /testsuite | |
| parent | 488a9ed3440fe882ae043ba7f44fed4e84e679ce (diff) | |
| download | haskell-23143f60680f78f80762754fe060a3e8c6dc9a01.tar.gz | |
Refine ASSERT in buildPatSyn for the nullary case.
For a nullary pattern synonym we add an extra void argument to the
matcher in order to preserve laziness. The check in buildPatSyn
wasn't aware of this special case which was causing the assertion to
fail.
Reviewers: austin, simonpj, bgamari
Reviewed By: simonpj, bgamari
Subscribers: simonpj, thomie
Differential Revision: https://phabricator.haskell.org/D2624
GHC Trac Issues: #12746
Diffstat (limited to 'testsuite')
| -rw-r--r-- | testsuite/tests/patsyn/should_compile/T12746.hs | 7 | ||||
| -rw-r--r-- | testsuite/tests/patsyn/should_compile/T12746A.hs | 5 | ||||
| -rw-r--r-- | testsuite/tests/patsyn/should_compile/all.T | 1 |
3 files changed, 13 insertions, 0 deletions
diff --git a/testsuite/tests/patsyn/should_compile/T12746.hs b/testsuite/tests/patsyn/should_compile/T12746.hs new file mode 100644 index 0000000000..4c44c0fda5 --- /dev/null +++ b/testsuite/tests/patsyn/should_compile/T12746.hs @@ -0,0 +1,7 @@ +module T12746 where + +import T12746A + +foo a = case a of + Foo -> True + _ -> False diff --git a/testsuite/tests/patsyn/should_compile/T12746A.hs b/testsuite/tests/patsyn/should_compile/T12746A.hs new file mode 100644 index 0000000000..4cf7b070fb --- /dev/null +++ b/testsuite/tests/patsyn/should_compile/T12746A.hs @@ -0,0 +1,5 @@ +{-# LANGUAGE ScopedTypeVariables, PatternSynonyms #-} +module T12746A where + +pattern Foo :: Int +pattern Foo = 0x00000001 diff --git a/testsuite/tests/patsyn/should_compile/all.T b/testsuite/tests/patsyn/should_compile/all.T index 4426c74733..1952672a99 100644 --- a/testsuite/tests/patsyn/should_compile/all.T +++ b/testsuite/tests/patsyn/should_compile/all.T @@ -61,3 +61,4 @@ test('T12484', normal, compile, ['']) test('T11987', normal, multimod_compile, ['T11987', '-v0']) test('T12615', normal, compile, ['']) test('T12698', normal, compile, ['']) +test('T12746', normal, multi_compile, ['T12746', [('T12746A.hs', '-c')],'-v0']) |