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authorSimon Peyton Jones <simonpj@microsoft.com>2014-04-03 13:30:59 +0100
committerSimon Peyton Jones <simonpj@microsoft.com>2014-04-03 13:35:31 +0100
commit3671d0027329804a31a628a5bee355e0640a2045 (patch)
tree2c5f6f9e546ff77d09474b4c539aac3b92bd9f56 /testsuite
parent791f4fa24dd6929ab2e55c9f8b870d8078337427 (diff)
downloadhaskell-3671d0027329804a31a628a5bee355e0640a2045.tar.gz
Fix desguaring of bang patterns (Trac #8952)
A palpable bug, although one that will rarely bite
Diffstat (limited to 'testsuite')
-rw-r--r--testsuite/tests/deSugar/should_run/T8952.hs8
-rw-r--r--testsuite/tests/deSugar/should_run/T8952.stdout1
-rw-r--r--testsuite/tests/deSugar/should_run/all.T1
3 files changed, 10 insertions, 0 deletions
diff --git a/testsuite/tests/deSugar/should_run/T8952.hs b/testsuite/tests/deSugar/should_run/T8952.hs
new file mode 100644
index 0000000000..42eeb250a9
--- /dev/null
+++ b/testsuite/tests/deSugar/should_run/T8952.hs
@@ -0,0 +1,8 @@
+{-# LANGUAGE BangPatterns #-}
+
+module Main where
+
+main = print (case Nothing of
+ !(~(Just x)) -> "ok"
+ Nothing -> "bad")
+
diff --git a/testsuite/tests/deSugar/should_run/T8952.stdout b/testsuite/tests/deSugar/should_run/T8952.stdout
new file mode 100644
index 0000000000..52c33a57c7
--- /dev/null
+++ b/testsuite/tests/deSugar/should_run/T8952.stdout
@@ -0,0 +1 @@
+"ok"
diff --git a/testsuite/tests/deSugar/should_run/all.T b/testsuite/tests/deSugar/should_run/all.T
index 352a65239e..233f6485d9 100644
--- a/testsuite/tests/deSugar/should_run/all.T
+++ b/testsuite/tests/deSugar/should_run/all.T
@@ -40,3 +40,4 @@ test('mc08', normal, compile_and_run, [''])
test('T5742', normal, compile_and_run, [''])
test('DsLambdaCase', when(compiler_lt('ghc', '7.5'), skip), compile_and_run, [''])
test('DsMultiWayIf', when(compiler_lt('ghc', '7.5'), skip), compile_and_run, [''])
+test('T8952', normal, compile_and_run, [''])