fix via mdinger

pull/10/head
Alexis Beingessner 9 years ago committed by Manish Goregaokar
parent c2e44a36f3
commit b6cf288741

@ -109,7 +109,7 @@ struct FooRepr {
And indeed this is approximately how it would be laid out in general
(modulo the size and position of `tag`). However there are several cases where
such a representation is ineffiecient. The classic case of this is Rust's
such a representation is inefficient. The classic case of this is Rust's
"null pointer optimization". Given a pointer that is known to not be null
(e.g. `&u32`), an enum can *store* a discriminant bit *inside* the pointer
by using null as a special value. The net result is that
@ -121,4 +121,4 @@ nested enums pooling their tags into a single descriminant, as they are by
definition known to have a limited range of valid values. In principle enums can
use fairly elaborate algorithms to cache bits throughout nested types with
special constrained representations. As such it is *especially* desirable that
we leave enum layout unspecified today.
we leave enum layout unspecified today.

Loading…
Cancel
Save