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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/never_type/diverging-fallback-no-leak.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/test/ui/never_type/diverging-fallback-no-leak.rs b/src/test/ui/never_type/diverging-fallback-no-leak.rs new file mode 100644 index 000000000..03478e19d --- /dev/null +++ b/src/test/ui/never_type/diverging-fallback-no-leak.rs @@ -0,0 +1,19 @@ +// revisions: nofallback fallback +//[nofallback] check-pass + +#![cfg_attr(fallback, feature(never_type, never_type_fallback))] + +fn make_unit() {} + +trait Test {} +impl Test for i32 {} +impl Test for () {} + +fn unconstrained_arg<T: Test>(_: T) {} + +fn main() { + // Here the type variable falls back to `!`, + // and hence we get a type error. + unconstrained_arg(return); + //[fallback]~^ ERROR trait bound `!: Test` is not satisfied +} |