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allow enums that ref themselves via unsafe pointers

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This commit is contained in:
Niko Matsakis 2012-05-03 17:07:57 -07:00
parent c6d33c3d37
commit a7e0eb3581
1 changed files with 4 additions and 1 deletions
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5
src/rustc/middle/ty.rs
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@ -1475,11 +1475,14 @@ fn is_instantiable(cx: ctxt, r_ty: t) -> bool {
ty_box(mt) | ty_box(mt) |
ty_uniq(mt) | ty_uniq(mt) |
ty_ptr(mt) |
ty_rptr(_, mt) { ty_rptr(_, mt) {
be type_requires(cx, seen, r_ty, mt.ty); be type_requires(cx, seen, r_ty, mt.ty);
} }
ty_ptr(mt) {
false // unsafe ptrs can always be NULL
}
ty_rec(fields) { ty_rec(fields) {
vec::any(fields) {|field| vec::any(fields) {|field|
type_requires(cx, seen, r_ty, field.mt.ty) type_requires(cx, seen, r_ty, field.mt.ty)