Auto merge of #33355 - luqmana:33202-repr-ice, r=nrc
adt: Allow repr attribute on single variant enum. Fixes #33202.
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33a5c9dfd1
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@ -306,10 +306,8 @@ fn represent_type_uncached<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
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cx.tcx().item_path_str(def.did));
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cx.tcx().item_path_str(def.did));
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}
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}
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if cases.len() == 1 {
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if cases.len() == 1 && hint == attr::ReprAny {
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// Equivalent to a struct/tuple/newtype.
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// Equivalent to a struct/tuple/newtype.
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// (Typechecking will reject discriminant-sizing attrs.)
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assert_eq!(hint, attr::ReprAny);
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let mut ftys = cases[0].tys.clone();
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let mut ftys = cases[0].tys.clone();
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if dtor { ftys.push(cx.tcx().dtor_type()); }
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if dtor { ftys.push(cx.tcx().dtor_type()); }
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return Univariant(mk_struct(cx, &ftys[..], false, t),
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return Univariant(mk_struct(cx, &ftys[..], false, t),
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@ -0,0 +1,18 @@
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// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#[repr(C)]
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pub enum CPOption<T> {
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PSome(T),
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}
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fn main() {
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println!("sizeof CPOption<i32> {}", std::mem::size_of::<CPOption<i32>>());
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}
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