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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/nll/closure-requirements/propagate-multiple-requirements.rs
parentInitial commit. (diff)
downloadrustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz
rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/nll/closure-requirements/propagate-multiple-requirements.rs')
-rw-r--r--src/test/ui/nll/closure-requirements/propagate-multiple-requirements.rs23
1 files changed, 23 insertions, 0 deletions
diff --git a/src/test/ui/nll/closure-requirements/propagate-multiple-requirements.rs b/src/test/ui/nll/closure-requirements/propagate-multiple-requirements.rs
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index 000000000..a9d2a0771
--- /dev/null
+++ b/src/test/ui/nll/closure-requirements/propagate-multiple-requirements.rs
@@ -0,0 +1,23 @@
+// Test that we propagate *all* requirements to the caller, not just the first
+// one.
+
+fn once<S, T, U, F: FnOnce(S, T) -> U>(f: F, s: S, t: T) -> U {
+ f(s, t)
+}
+
+pub fn dangle() -> &'static [i32] {
+ let other_local_arr = [0, 2, 4];
+ let local_arr = other_local_arr;
+ let mut out: &mut &'static [i32] = &mut (&[1] as _);
+ once(|mut z: &[i32], mut out_val: &mut &[i32]| {
+ // We unfortunately point to the first use in the closure in the error
+ // message
+ z = &local_arr; //~ ERROR
+ *out_val = &local_arr;
+ }, &[] as &[_], &mut *out);
+ *out
+}
+
+fn main() {
+ println!("{:?}", dangle());
+}