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| author | Edward Z. Yang <ezyang@cs.stanford.edu> | 2017-03-01 00:11:43 -0800 |
|---|---|---|
| committer | Edward Z. Yang <ezyang@cs.stanford.edu> | 2017-03-02 15:59:02 -0800 |
| commit | bba004f2a0642d3bb8c8876543aaa1a48a2f9a43 (patch) | |
| tree | dbf421874c9e5ae537652851006c2b38144acd72 /testsuite/tests/typecheck/should_fail/T13068a.hs | |
| parent | df919fb21c951c1892bd96d9e6306ce1bec3daa9 (diff) | |
| download | haskell-bba004f2a0642d3bb8c8876543aaa1a48a2f9a43.tar.gz | |
Prevent users from defining instances for abstract classes.
Summary:
Fixes #13068.
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
Test Plan: validate
Reviewers: simonpj, austin, bgamari
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D3254
Diffstat (limited to 'testsuite/tests/typecheck/should_fail/T13068a.hs')
| -rw-r--r-- | testsuite/tests/typecheck/should_fail/T13068a.hs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_fail/T13068a.hs b/testsuite/tests/typecheck/should_fail/T13068a.hs new file mode 100644 index 0000000000..fb7bda627a --- /dev/null +++ b/testsuite/tests/typecheck/should_fail/T13068a.hs @@ -0,0 +1,3 @@ +module T13068a where +import {-# SOURCE #-} T13068 +instance C Int where |