diff options
Diffstat (limited to 'testsuite/tests/deriving/should_fail/T3833.stderr')
| -rw-r--r-- | testsuite/tests/deriving/should_fail/T3833.stderr | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/testsuite/tests/deriving/should_fail/T3833.stderr b/testsuite/tests/deriving/should_fail/T3833.stderr new file mode 100644 index 0000000000..2d31cc1364 --- /dev/null +++ b/testsuite/tests/deriving/should_fail/T3833.stderr @@ -0,0 +1,6 @@ + +T3833.hs:9:1: + Can't make a derived instance of `Monoid (DecodeMap e)': + `Monoid' is not a derivable class + Try -XGeneralizedNewtypeDeriving for GHC's newtype-deriving extension + In the stand-alone deriving instance for `Monoid (DecodeMap e)' |