/src/regex/fuzz/fuzz_targets/ast_fuzz_regex.rs

Source
#![no_main]

use {
    libfuzzer_sys::fuzz_target, regex::RegexBuilder, regex_syntax::ast::Ast,
};

#[derive(Eq, PartialEq, arbitrary::Arbitrary)]
struct FuzzData {
    ast: Ast,
}

impl std::fmt::Debug for FuzzData {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        let mut builder = f.debug_struct("FuzzData");
        builder.field("ast", &format!("{}", self.ast));
        builder.finish()
    }
}

fuzz_target!(|data: FuzzData| {
    let _ = env_logger::try_init();

    let pattern = format!("{}", data.ast);
    RegexBuilder::new(&pattern).size_limit(1 << 20).build().ok();
});

Coverage Report

Created: 2025-09-27 07:15

Line	Count	Source
1		#![no_main]
2
3		use {
4		libfuzzer_sys::fuzz_target, regex::RegexBuilder, regex_syntax::ast::Ast,
5		};
6
7		#[derive(Eq, PartialEq, arbitrary::Arbitrary)]
8		struct FuzzData {
9		ast: Ast,
10		}
11
12		impl std::fmt::Debug for FuzzData {
13	0	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
14	0	let mut builder = f.debug_struct("FuzzData");
15	0	builder.field("ast", &format!("{}", self.ast));
16	0	builder.finish()
17	0	}
18		}
19
20		fuzz_target!(\|data: FuzzData\| {
21		let _ = env_logger::try_init();
22
23		let pattern = format!("{}", data.ast);
24		RegexBuilder::new(&pattern).size_limit(1 << 20).build().ok();
25		});