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| author | Simon Peyton Jones <simonpj@microsoft.com> | 2018-09-20 19:53:56 +0100 |
|---|---|---|
| committer | Simon Peyton Jones <simonpj@microsoft.com> | 2018-09-23 02:45:23 +0100 |
| commit | cad5d0b69bc039b635a6eb0e5c9ed47d7c5a38ed (patch) | |
| tree | e245f11c6cb56e4422a9e0875ceacd93c3ef4096 /testsuite/tests/rename | |
| parent | 7e77f41430ae1cad84d5b0c90328331d38f3eda0 (diff) | |
| download | haskell-cad5d0b69bc039b635a6eb0e5c9ed47d7c5a38ed.tar.gz | |
Buglet in reporting out of scope errors in rules
Most out of scope errors get reported by the type checker these
days, but not all. Example, the function on the LHS of a RULE.
Trace #15659 pointed out that this less-heavily-used code path
produce a "wacky" error message. Indeed so. Easily fixed.
Diffstat (limited to 'testsuite/tests/rename')
| -rw-r--r-- | testsuite/tests/rename/should_fail/T15659.hs | 5 | ||||
| -rw-r--r-- | testsuite/tests/rename/should_fail/T15659.stderr | 6 | ||||
| -rw-r--r-- | testsuite/tests/rename/should_fail/all.T | 2 |
3 files changed, 12 insertions, 1 deletions
diff --git a/testsuite/tests/rename/should_fail/T15659.hs b/testsuite/tests/rename/should_fail/T15659.hs new file mode 100644 index 0000000000..9fa516f2b6 --- /dev/null +++ b/testsuite/tests/rename/should_fail/T15659.hs @@ -0,0 +1,5 @@ +module T15659 where + +{-# RULES "test" forall x. f x = x #-} + + diff --git a/testsuite/tests/rename/should_fail/T15659.stderr b/testsuite/tests/rename/should_fail/T15659.stderr new file mode 100644 index 0000000000..e1cbf9f079 --- /dev/null +++ b/testsuite/tests/rename/should_fail/T15659.stderr @@ -0,0 +1,6 @@ + +T15659.hs:3:11: error: + Rule "test": + Not in scope: âfâ + in left-hand side: f x + LHS must be of form (f e1 .. en) where f is not forall'd diff --git a/testsuite/tests/rename/should_fail/all.T b/testsuite/tests/rename/should_fail/all.T index c69efb9c66..f8b950b563 100644 --- a/testsuite/tests/rename/should_fail/all.T +++ b/testsuite/tests/rename/should_fail/all.T @@ -134,4 +134,4 @@ test('T14591', normal, compile_fail, ['']) test('T15214', normal, compile_fail, ['']) test('T15539', normal, compile_fail, ['']) test('T15487', normal, multimod_compile_fail, ['T15487','-v0']) - +test('T15659', normal, compile_fail, ['']) |