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Diffstat (limited to 'tests/ui/consts/const-fn-mismatch.rs')
-rw-r--r-- | tests/ui/consts/const-fn-mismatch.rs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/consts/const-fn-mismatch.rs b/tests/ui/consts/const-fn-mismatch.rs new file mode 100644 index 000000000..3107b8128 --- /dev/null +++ b/tests/ui/consts/const-fn-mismatch.rs @@ -0,0 +1,17 @@ +// Test that we can't declare a const fn in an impl -- right now it's +// just not allowed at all, though eventually it'd make sense to allow +// it if the trait fn is const (but right now no trait fns can be +// const). + +trait Foo { + fn f() -> u32; +} + +impl Foo for u32 { + const fn f() -> u32 { + //~^ ERROR functions in traits cannot be declared const + 22 + } +} + +fn main() {} |