diff --git a/compiler/rustc_passes/src/liveness.rs b/compiler/rustc_passes/src/liveness.rs index 06eb76c30c5fb..24fac19991113 100644 --- a/compiler/rustc_passes/src/liveness.rs +++ b/compiler/rustc_passes/src/liveness.rs @@ -1021,7 +1021,10 @@ impl<'a, 'tcx> Liveness<'a, 'tcx> { } hir::ExprKind::Call(ref f, args) => { - let succ = self.check_is_ty_uninhabited(expr, succ); + let is_ctor = |f: &Expr<'_>| matches!(f.kind, hir::ExprKind::Path(hir::QPath::Resolved(_, path)) if matches!(path.res, rustc_hir::def::Res::Def(rustc_hir::def::DefKind::Ctor(_, _), _))); + let succ = + if !is_ctor(f) { self.check_is_ty_uninhabited(expr, succ) } else { succ }; + let succ = self.propagate_through_exprs(args, succ); self.propagate_through_expr(f, succ) } diff --git a/tests/ui/reachable/unreachable-by-call-arguments-issue-139627.rs b/tests/ui/reachable/unreachable-by-call-arguments-issue-139627.rs new file mode 100644 index 0000000000000..b3310ac1c754c --- /dev/null +++ b/tests/ui/reachable/unreachable-by-call-arguments-issue-139627.rs @@ -0,0 +1,16 @@ +//@ check-pass +#![deny(unreachable_code)] +#![deny(unused)] + +pub enum Void {} + +pub struct S(T); + +pub fn foo(void: Void, void1: Void) { + let s = S(void); + drop(s); + let s1 = S { 0: void1 }; + drop(s1); +} + +fn main() {}