From c31aedf47f946e616169d4e0b95f898981b4e84b Mon Sep 17 00:00:00 2001
From: Michael Goulet <michael@errs.io>
Date: Wed, 16 Aug 2023 00:45:02 +0000
Subject: [PATCH] Don't ICE in is_trivially_sized when encountering late-bound
self ty
---
compiler/rustc_middle/src/ty/sty.rs | 4 ++--
.../sized-late-bound-issue-114872.rs | 19 +++++++++++++++++++
.../sized-late-bound-issue-114872.stderr | 11 +++++++++++
3 files changed, 32 insertions(+), 2 deletions(-)
create mode 100644 tests/ui/traits/non_lifetime_binders/sized-late-bound-issue-114872.rs
create mode 100644 tests/ui/traits/non_lifetime_binders/sized-late-bound-issue-114872.stderr
diff --git a/compiler/rustc_middle/src/ty/sty.rs b/compiler/rustc_middle/src/ty/sty.rs
index e6baa624205..0291cdd6c57 100644
--- a/compiler/rustc_middle/src/ty/sty.rs
+++ b/compiler/rustc_middle/src/ty/sty.rs
@@ -2827,11 +2827,11 @@ impl<'tcx> Ty<'tcx> {
ty::Adt(def, _args) => def.sized_constraint(tcx).skip_binder().is_empty(),
- ty::Alias(..) | ty::Param(_) | ty::Placeholder(..) => false,
+ ty::Alias(..) | ty::Param(_) | ty::Placeholder(..) | ty::Bound(..) => false,
ty::Infer(ty::TyVar(_)) => false,
- ty::Bound(..) | ty::Infer(ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => {
+ ty::Infer(ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => {
bug!("`is_trivially_sized` applied to unexpected type: {:?}", self)
}
}
diff --git a/tests/ui/traits/non_lifetime_binders/sized-late-bound-issue-114872.rs b/tests/ui/traits/non_lifetime_binders/sized-late-bound-issue-114872.rs
new file mode 100644
index 00000000000..ba55ab07185
--- /dev/null
+++ b/tests/ui/traits/non_lifetime_binders/sized-late-bound-issue-114872.rs
@@ -0,0 +1,19 @@
+// check-pass
+
+#![feature(non_lifetime_binders)]
+//~^ WARN is incomplete and may not be safe
+
+pub fn foo()
+where
+ for<V> V: Sized,
+{
+ bar();
+}
+
+pub fn bar()
+where
+ for<V> V: Sized,
+{
+}
+
+pub fn main() {}
diff --git a/tests/ui/traits/non_lifetime_binders/sized-late-bound-issue-114872.stderr b/tests/ui/traits/non_lifetime_binders/sized-late-bound-issue-114872.stderr
new file mode 100644
index 00000000000..e75d8127052
--- /dev/null
+++ b/tests/ui/traits/non_lifetime_binders/sized-late-bound-issue-114872.stderr
@@ -0,0 +1,11 @@
+warning: the feature `non_lifetime_binders` is incomplete and may not be safe to use and/or cause compiler crashes
+ --> $DIR/sized-late-bound-issue-114872.rs:3:12
+ |
+LL | #![feature(non_lifetime_binders)]
+ | ^^^^^^^^^^^^^^^^^^^^
+ |
+ = note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information
+ = note: `#[warn(incomplete_features)]` on by default
+
+warning: 1 warning emitted
+