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Fix issue 91206

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This commit is contained in:
Michael Goulet 2021-11-25 06:48:09 +00:00
parent 862962b90e
commit 718a3b1f2d
1 changed files with 14 additions and 10 deletions
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24
compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs
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@ -447,16 +447,20 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
// check if the RHS is from desugaring // check if the RHS is from desugaring
let opt_assignment_rhs_span = let opt_assignment_rhs_span =
self.body.find_assignments(local).first().map(|&location| { self.body.find_assignments(local).first().map(|&location| {
let stmt = &self.body[location.block].statements if let Some(mir::Statement {
[location.statement_index]; source_info: _,
match stmt.kind { kind:
mir::StatementKind::Assign(box ( mir::StatementKind::Assign(box (
_, _,
mir::Rvalue::Use(mir::Operand::Copy(place)), mir::Rvalue::Use(mir::Operand::Copy(place)),
)) => { )),
self.body.local_decls[place.local].source_info.span }) = self.body[location.block]
} .statements
_ => self.body.source_info(location).span, .get(location.statement_index)
{
self.body.local_decls[place.local].source_info.span
} else {
self.body.source_info(location).span
} }
}); });
match opt_assignment_rhs_span.and_then(|s| s.desugaring_kind()) { match opt_assignment_rhs_span.and_then(|s| s.desugaring_kind()) {