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Avoid panicking when previous stack trace doesn't have the same length

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This commit is contained in:
Antonio Scandurra
2023-07-25 15:03:42 +02:00
parent 88829dfe21
commit edc63ee3ff
1 changed files with 18 additions and 13 deletions
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31
crates/gpui/src/executor.rs
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@@ -561,8 +561,8 @@ impl DeterministicState {
self.poll_history.push(event);
if let Some(prev_history) = &self.previous_poll_history {
let ix = self.poll_history.len() - 1;
let prev_event = prev_history[ix];
if event != prev_event {
let prev_event = prev_history.get(ix);
if Some(&event) != prev_event {
let mut message = String::new();
writeln!(
&mut message,
@@ -573,17 +573,22 @@ impl DeterministicState {
})
)
.unwrap();
writeln!(
&mut message,
"previous runnable backtrace:\n{:?}",
self.runnable_backtraces
.get_mut(&prev_event.id())
.map(|trace| {
trace.resolve();
util::CwdBacktrace(trace)
})
)
.unwrap();
if let Some(prev_event) = prev_event {
writeln!(
&mut message,
"previous runnable backtrace:\n{:?}",
self.runnable_backtraces
.get_mut(&prev_event.id())
.map(|trace| {
trace.resolve();
util::CwdBacktrace(trace)
})
)
.unwrap();
} else {
writeln!(&mut message, "previous runnable backtrace:\nnone");
}
panic!("detected non-determinism after {ix}. {message}");
}
}