diff options
Diffstat (limited to 'testsuite/tests/overloadedlists/should_fail/overloadedlistsfail01.stderr')
| -rw-r--r-- | testsuite/tests/overloadedlists/should_fail/overloadedlistsfail01.stderr | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/testsuite/tests/overloadedlists/should_fail/overloadedlistsfail01.stderr b/testsuite/tests/overloadedlists/should_fail/overloadedlistsfail01.stderr index 75abc3b0e6..7faa9207a4 100644 --- a/testsuite/tests/overloadedlists/should_fail/overloadedlistsfail01.stderr +++ b/testsuite/tests/overloadedlists/should_fail/overloadedlistsfail01.stderr @@ -1,8 +1,9 @@ overloadedlistsfail01.hs:5:8: error: - No instance for (Show a0) arising from a use of ‘print’ - The type variable ‘a0’ is ambiguous - Potential instances: + 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 Ordering -- Defined in ‘GHC.Show’ instance Show Integer -- Defined in ‘GHC.Show’ @@ -12,9 +13,10 @@ overloadedlistsfail01.hs:5:8: error: In an equation for ‘main’: main = print [1] overloadedlistsfail01.hs:5:14: error: - No instance for (IsList a0) arising from an overloaded list - The type variable ‘a0’ is ambiguous - Potential instances: + 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]’ @@ -22,9 +24,10 @@ overloadedlistsfail01.hs:5:14: error: In an equation for ‘main’: main = print [1] overloadedlistsfail01.hs:5:15: error: - No instance for (Num (Item a0)) arising from the literal ‘1’ - The type variable ‘a0’ is ambiguous - Potential instances: + 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’ |