librustc: Take in account mutability when casting array to raw ptr. #14856
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| mt1.ty, mt2.ty) => { | ||
| (&ty::ty_rptr(_, ty::mt { ty: mt1, mutbl: ast::MutImmutable }), | ||
| &ty::ty_ptr(ty::mt { ty: mt2, mutbl: ast::MutImmutable })) | ||
| if types_compatible(fcx, e.span, mt1, mt2) => { |
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Hmm, do we not intend to support &mut T to *mut T? I kind of assumed we did, though I can see an argument for not doing so, since the semantics are not compatible.
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Currently, we allow &mut T to *mut T but not &mut [T] to *mut T. This change just disallows something like &[T] to *mut T.
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On Fri, Jun 13, 2014 at 12:15:04PM -0700, Luqman Aden wrote:
Currently, we allow
&mut Tto*mut Tbut not&mut [T]to*mut T. This change just disallows something like&[T]to*mut T.
ok, hmm, I must have misread the patch.
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Fixes #14845.