mirror of https://github.com/rust-lang/rust
39 lines
783 B
Rust
39 lines
783 B
Rust
//@ revisions: compat no-compat
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//@[no-compat] compile-flags: -Zno-implied-bounds-compat
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#![allow(unreachable_code, unused)]
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use std::marker::PhantomData;
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struct FsmBuilder<TFsm> {
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_fsm: PhantomData<TFsm>,
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}
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impl<TFsm> FsmBuilder<TFsm> {
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fn state(&mut self) -> FsmStateBuilder<TFsm> {
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todo!()
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}
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}
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struct FsmStateBuilder<TFsm> {
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_state: PhantomData<TFsm>,
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}
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impl<TFsm> FsmStateBuilder<TFsm> {
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fn on_entry<TAction: Fn(&mut StateContext<'_, TFsm>)>(&self, _action: TAction) {}
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}
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trait Fsm {
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type Context;
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}
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struct StateContext<'a, TFsm: Fsm> {
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context: &'a mut TFsm::Context,
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}
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fn main() {
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let mut builder: FsmBuilder<usize> = todo!();
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builder.state().on_entry(|_| {});
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//~^ ERROR the trait bound `usize: Fsm` is not satisfied
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}
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