From 10def29b9600fdd082c3157b960c2e50be496d56 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Mon, 15 Apr 2024 08:07:06 +0200
Subject: [PATCH] seq: fuzz PreciseNumber::from_str (#6183)

* fuzz the seq parse number functions

* run fuzz_parse_number into the CI
---
 .github/workflows/fuzzing.yml              |  2 ++
 fuzz/Cargo.toml                            |  6 ++++++
 fuzz/fuzz_targets/fuzz_seq_parse_number.rs | 15 +++++++++++++++
 src/uu/seq/src/seq.rs                      |  4 ++++
 4 files changed, 27 insertions(+)
 create mode 100644 fuzz/fuzz_targets/fuzz_seq_parse_number.rs

diff --git a/.github/workflows/fuzzing.yml b/.github/workflows/fuzzing.yml
index e045d9b4f..df40b1236 100644
--- a/.github/workflows/fuzzing.yml
+++ b/.github/workflows/fuzzing.yml
@@ -58,6 +58,8 @@ jobs:
           - { name: fuzz_parse_glob, should_pass: true }
           - { name: fuzz_parse_size, should_pass: true }
           - { name: fuzz_parse_time, should_pass: true }
+          - { name: fuzz_seq_parse_number, should_pass: true }
+
     steps:
     - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@nightly
diff --git a/fuzz/Cargo.toml b/fuzz/Cargo.toml
index a97054192..e8ce7b697 100644
--- a/fuzz/Cargo.toml
+++ b/fuzz/Cargo.toml
@@ -92,6 +92,12 @@ path = "fuzz_targets/fuzz_test.rs"
 test = false
 doc = false
 
+[[bin]]
+name = "fuzz_seq_parse_number"
+path = "fuzz_targets/fuzz_seq_parse_number.rs"
+test = false
+doc = false
+
 [[bin]]
 name = "fuzz_parse_glob"
 path = "fuzz_targets/fuzz_parse_glob.rs"
diff --git a/fuzz/fuzz_targets/fuzz_seq_parse_number.rs b/fuzz/fuzz_targets/fuzz_seq_parse_number.rs
new file mode 100644
index 000000000..04da6d47f
--- /dev/null
+++ b/fuzz/fuzz_targets/fuzz_seq_parse_number.rs
@@ -0,0 +1,15 @@
+// This file is part of the uutils coreutils package.
+//
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+#![no_main]
+
+use libfuzzer_sys::fuzz_target;
+use std::str::FromStr;
+use uu_seq::number::PreciseNumber;
+
+fuzz_target!(|data: &[u8]| {
+    if let Ok(s) = std::str::from_utf8(data) {
+        let _ = PreciseNumber::from_str(s);
+    }
+});
diff --git a/src/uu/seq/src/seq.rs b/src/uu/seq/src/seq.rs
index 33b7636ed..96ae83ba0 100644
--- a/src/uu/seq/src/seq.rs
+++ b/src/uu/seq/src/seq.rs
@@ -14,6 +14,10 @@ use uucore::{format_usage, help_about, help_usage};
 
 mod error;
 mod extendedbigdecimal;
+// public to allow fuzzing
+#[cfg(fuzzing)]
+pub mod number;
+#[cfg(not(fuzzing))]
 mod number;
 mod numberparse;
 use crate::error::SeqError;