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-rw-r--r--library/std/src/sys_common/io.rs3
1 files changed, 2 insertions, 1 deletions
diff --git a/library/std/src/sys_common/io.rs b/library/std/src/sys_common/io.rs
index d1e9fed41..4a42ff3c6 100644
--- a/library/std/src/sys_common/io.rs
+++ b/library/std/src/sys_common/io.rs
@@ -39,9 +39,10 @@ pub mod test {
}
}
+ #[track_caller] // for `test_rng`
pub fn tmpdir() -> TempDir {
let p = env::temp_dir();
- let mut r = rand::thread_rng();
+ let mut r = crate::test_helpers::test_rng();
let ret = p.join(&format!("rust-{}", r.next_u32()));
fs::create_dir(&ret).unwrap();
TempDir(ret)