diff options
Diffstat (limited to 'testsuite/tests/overloadedlists/should_fail/overloadedlistsfail01.stderr')
| -rw-r--r-- | testsuite/tests/overloadedlists/should_fail/overloadedlistsfail01.stderr | 67 |
1 files changed, 35 insertions, 32 deletions
diff --git a/testsuite/tests/overloadedlists/should_fail/overloadedlistsfail01.stderr b/testsuite/tests/overloadedlists/should_fail/overloadedlistsfail01.stderr index dbc250d794..7a43f4f778 100644 --- a/testsuite/tests/overloadedlists/should_fail/overloadedlistsfail01.stderr +++ b/testsuite/tests/overloadedlists/should_fail/overloadedlistsfail01.stderr @@ -1,38 +1,41 @@ overloadedlistsfail01.hs:5:8: error: - Ambiguous type variable ‘a0’ arising from a use of ‘print’ - prevents the constraint ‘(Show a0)’ from being solved. - Probable fix: use a type annotation to specify what ‘a0’ should be. - These potential instances exist: - instance [safe] Show Version -- Defined in ‘Data.Version’ - instance Show Module -- Defined in ‘GHC.Show’ - instance Show Ordering -- Defined in ‘GHC.Show’ - ...plus 26 others - (use -fprint-potential-instances to see them all) - In the expression: print [1] - In an equation for ‘main’: main = print [1] + • Ambiguous type variable ‘a0’ arising from a use of ‘print’ + prevents the constraint ‘(Show a0)’ from being solved. + Probable fix: use a type annotation to specify what ‘a0’ should be. + These potential instances exist: + instance Show Ordering -- Defined in ‘GHC.Show’ + instance Show Integer -- Defined in ‘GHC.Show’ + instance Show a => Show (Maybe a) -- Defined in ‘GHC.Show’ + ...plus 22 others + ...plus four instance involving out-of-scope typess + (use -fprint-potential-instances to see them all) + • In the expression: print [1] + In an equation for ‘main’: main = print [1] overloadedlistsfail01.hs:5:14: error: - Ambiguous type variable ‘a0’ arising from an overloaded list - prevents the constraint ‘(IsList a0)’ from being solved. - Probable fix: use a type annotation to specify what ‘a0’ should be. - These potential instances exist: - instance IsList Version -- Defined in ‘GHC.Exts’ - instance IsList [a] -- Defined in ‘GHC.Exts’ - In the first argument of ‘print’, namely ‘[1]’ - In the expression: print [1] - In an equation for ‘main’: main = print [1] + • Ambiguous type variable ‘a0’ arising from an overloaded list + prevents the constraint ‘(GHC.Exts.IsList a0)’ from being solved. + Probable fix: use a type annotation to specify what ‘a0’ should be. + These potential instances exist: + instance GHC.Exts.IsList [a] -- Defined in ‘GHC.Exts’ + ...plus one instance involving out-of-scope types + (use -fprint-potential-instances to see them all) + • In the first argument of ‘print’, namely ‘[1]’ + In the expression: print [1] + In an equation for ‘main’: main = print [1] overloadedlistsfail01.hs:5:15: error: - Ambiguous type variable ‘a0’ arising from the literal ‘1’ - prevents the constraint ‘(Num (Item a0))’ from being solved. - Probable fix: use a type annotation to specify what ‘a0’ should be. - These potential instances exist: - instance Num Integer -- Defined in ‘GHC.Num’ - instance Num Double -- Defined in ‘GHC.Float’ - instance Num Float -- Defined in ‘GHC.Float’ - ...plus two others - (use -fprint-potential-instances to see them all) - In the expression: 1 - In the first argument of ‘print’, namely ‘[1]’ - In the expression: print [1] + • Ambiguous type variable ‘a0’ arising from the literal ‘1’ + prevents the constraint ‘(Num + (GHC.Exts.Item a0))’ from being solved. + Probable fix: use a type annotation to specify what ‘a0’ should be. + These potential instances exist: + instance Num Integer -- Defined in ‘GHC.Num’ + instance Num Double -- Defined in ‘GHC.Float’ + instance Num Float -- Defined in ‘GHC.Float’ + ...plus two others + (use -fprint-potential-instances to see them all) + • In the expression: 1 + In the first argument of ‘print’, namely ‘[1]’ + In the expression: print [1] |