lean4-htt/tests/lean/run/3996.lean
jrr6 4759506bcf
chore: use note and hint' for message addenda (#8980)
This PR improves the consistency of error message formatting by
rendering addenda of several existing error messages as labeled notes
and hints.
2025-06-27 15:16:01 +00:00

45 lines
697 B
Text

namespace Ex1
class A where
class B (n : Nat) where
class C where
instance test [B 10000] [C] : A where
instance Bsucc {n : Nat} [B n] : B n.succ where
instance instB0 : B 0 where
instance instB10000 : B 10000 where
/--
error: failed to synthesize
A
Hint: Additional diagnostic information may be available using the `set_option diagnostics true` command.
-/
#guard_msgs in
#synth A -- should fail quickly
end Ex1
namespace Ex2
class A where
class B (n : Nat) where
class C where
instance test' [B 10] : A where
instance test [B 0] [C] : A where
instance foo {n : Nat} [B n.succ] : B n where
instance instB (n : Nat) : B n where
/--
info: test'
-/
#guard_msgs in
#synth A
end Ex2