diff --git a/compiler/rustc_mir_build/src/check_tail_calls.rs b/compiler/rustc_mir_build/src/check_tail_calls.rs index 0659e3ea314..921205428db 100644 --- a/compiler/rustc_mir_build/src/check_tail_calls.rs +++ b/compiler/rustc_mir_build/src/check_tail_calls.rs @@ -1,4 +1,5 @@ use rustc_abi::ExternAbi; +use rustc_data_structures::stack::ensure_sufficient_stack; use rustc_errors::Applicability; use rustc_hir::LangItem; use rustc_hir::def::DefKind; @@ -344,12 +345,14 @@ impl<'a, 'tcx> Visitor<'a, 'tcx> for TailCallCkVisitor<'a, 'tcx> { } fn visit_expr(&mut self, expr: &'a Expr<'tcx>) { - if let ExprKind::Become { value } = expr.kind { - let call = &self.thir[value]; - self.check_tail_call(call, expr); - } + ensure_sufficient_stack(|| { + if let ExprKind::Become { value } = expr.kind { + let call = &self.thir[value]; + self.check_tail_call(call, expr); + } - visit::walk_expr(self, expr); + visit::walk_expr(self, expr); + }); } }