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fuzzbug fix

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This commit is contained in:
Chris Fallin 2021-12-24 11:56:40 -08:00
parent fd969d9089
commit 88251ad7fb
1 changed files with 7 additions and 10 deletions
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17
src/backend/schedule.rs
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@ -73,7 +73,7 @@ impl Schedule {
// Prepare the "waiting on value", "remaining inputs", and
// "ready" vectors.
'skipvalue: for (value, value_def) in f.values() {
for (value, value_def) in f.values() {
if uses.use_count[value.index()] == 0 {
continue;
}
@ -82,6 +82,10 @@ impl Schedule {
}
match value_def {
&ValueDef::Operator(op, ref operands) => {
if operands.iter().any(|&value| value == Value::undef()) {
continue;
}
if operands.len() == 0 {
if !op_rematerialize(&op) {
log::trace!("immediately ready: v{}", value.index());
@ -90,9 +94,6 @@ impl Schedule {
} else {
let mut remaining = 0;
for &input in operands {
if input == Value::undef() {
continue 'skipvalue;
}
let input = f.resolve_alias(input);
match &f.values[input.index()] {
@ -222,14 +223,10 @@ impl<'a> SchedulerContext<'a> {
log::trace!("wake_dependents: v{}", v.index());
let dependents = self.waiting_on_value.remove(&v).unwrap_or_default();
for dependent in dependents {
log::trace!(" -> v{} wakes dependent v{}", v.index(), dependent.index(),);
let remaining = self.remaining_inputs.get_mut(&dependent).unwrap();
*remaining -= 1;
log::trace!(
" -> v{} wakes dependent v{}; remaining now {}",
v.index(),
dependent.index(),
*remaining
);
log::trace!(" -> remaining now {}", *remaining);
if *remaining == 0 {
self.remaining_inputs.remove(&dependent);
self.ready.push(dependent);