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Hack fix for ICE as seen in CI

This commit is contained in:
Trent Nelson 2022-02-23 00:02:27 -07:00 committed by Trent Nelson
parent 084fb79ad8
commit c81dd602c4
1 changed files with 18 additions and 0 deletions
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18
runtime/src/builtins.rs
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@ -123,6 +123,24 @@ pub enum BuiltinFeatureTransition {
},
}
// https://github.com/solana-labs/solana/pull/23233 added `BuiltinFeatureTransition`
// to `Bank` which triggers https://github.com/rust-lang/rust/issues/92987 while
// attempting to resolve `Sync` on `BankRc` in `AccountsBackgroundService::new` ala,
//
// query stack during panic:
// #0 [evaluate_obligation] evaluating trait selection obligation `bank::BankRc: core::marker::Sync`
// #1 [typeck] type-checking `accounts_background_service::<impl at runtime/src/accounts_background_service.rs:358:1: 520:2>::new`
// #2 [typeck_item_bodies] type-checking all item bodies
// #3 [analysis] running analysis passes on this crate
// end of query stack
//
// Yoloing a `Sync` onto it avoids the auto trait evaluation and thus the ICE.
//
// We should remove this when upgrading to Rust 1.60.0, where the bug has been
// fixed by https://github.com/rust-lang/rust/pull/93064
unsafe impl Send for BuiltinFeatureTransition {}
unsafe impl Sync for BuiltinFeatureTransition {}
impl BuiltinFeatureTransition {
pub fn to_action(
&self,