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Workaround ICE with if-let and RFC 2229

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This commit is contained in:
Mark Rousskov 2021-09-18 18:04:40 -04:00
parent db1fb85cff
commit 440d9372a2
2 changed files with 8 additions and 9 deletions
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6
compiler/rustc_errors/src/lib.rs
View file

@ -1028,15 +1028,13 @@ impl HandlerInner {
let mut error_codes = self
.emitted_diagnostic_codes
.iter()
.filter_map(|x| {
match &x {
.filter_map(|x| match &x {
DiagnosticId::Error(s)
if let Ok(Some(_explanation)) = registry.try_find_description(s) =>
if registry.try_find_description(s).map_or(false, |o| o.is_some()) =>
{
Some(s.clone())
}
_ => None,
}
})
.collect::<Vec<_>>();
if !error_codes.is_empty() {

11
compiler/rustc_typeck/src/astconv/mod.rs
View file

@ -2417,13 +2417,14 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
let substs = InternalSubsts::for_item(tcx, def_id, |param, _| {
if let Some(i) = (param.index as usize).checked_sub(generics.parent_count) {
// Our own parameters are the resolved lifetimes.
match param.kind {
GenericParamDefKind::Lifetime
if let hir::GenericArg::Lifetime(lifetime) = &lifetimes[i] =>
{
if let GenericParamDefKind::Lifetime = param.kind {
if let hir::GenericArg::Lifetime(lifetime) = &lifetimes[i] {
self.ast_region_to_region(lifetime, None).into()
} else {
bug!()
}
_ => bug!(),
} else {
bug!()
}
} else {
match param.kind {