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Fix stack overflow in recursive AST walk in early lint #105919

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merged 1 commit into from
Jan 11, 2023
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Fix stack overflow in recursive AST walk in early lint #105919

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3 changes: 2 additions & 1 deletion compiler/rustc_lint/src/early.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@ use crate::passes::{EarlyLintPass, EarlyLintPassObject};
use rustc_ast::ptr::P;
use rustc_ast::visit::{self as ast_visit, Visitor};
use rustc_ast::{self as ast, walk_list, HasAttrs};
use rustc_data_structures::stack::ensure_sufficient_stack;
use rustc_middle::ty::RegisteredTools;
use rustc_session::lint::{BufferedEarlyLint, LintBuffer, LintPass};
use rustc_session::Session;
Expand Down Expand Up @@ -71,7 +72,7 @@ impl<'a, T: EarlyLintPass> EarlyContextAndPass<'a, T> {
self.inlined_check_id(id);
debug!("early context: enter_attrs({:?})", attrs);
lint_callback!(self, enter_lint_attrs, attrs);
f(self);
ensure_sufficient_stack(|| f(self));
debug!("early context: exit_attrs({:?})", attrs);
lint_callback!(self, exit_lint_attrs, attrs);
self.context.builder.pop(push);
Expand Down