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remove NoSendItem and NoSyncItem lang items #21394

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Merged
merged 1 commit into from
Jan 22, 2015
Merged

remove NoSendItem and NoSyncItem lang items #21394

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4 changes: 0 additions & 4 deletions src/doc/reference.md
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Expand Up @@ -2377,10 +2377,6 @@ These types help drive the compiler's analysis
: ___Needs filling in___
* `no_copy_bound`
: This type does not implement "copy", even if eligible.
* `no_send_bound`
: This type does not implement "send", even if eligible.
* `no_sync_bound`
: This type does not implement "sync", even if eligible.
* `eh_personality`
: ___Needs filling in___
* `exchange_free`
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2 changes: 1 addition & 1 deletion src/doc/trpl/unsafe.md
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Expand Up @@ -707,7 +707,7 @@ Other features provided by lang items include:
various kinds; lang items `send`, `sync` and `copy`.
- the marker types and variance indicators found in
`std::marker`; lang items `covariant_type`,
`contravariant_lifetime`, `no_sync_bound`, etc.
`contravariant_lifetime`, etc.

Lang items are loaded lazily by the compiler; e.g. if one never uses
`Box` then there is no need to define functions for `exchange_malloc`
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2 changes: 0 additions & 2 deletions src/librustc/middle/lang_items.rs
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Expand Up @@ -320,9 +320,7 @@ lets_do_this! {
ContravariantLifetimeItem, "contravariant_lifetime", contravariant_lifetime;
InvariantLifetimeItem, "invariant_lifetime", invariant_lifetime;

NoSendItem, "no_send_bound", no_send_bound;
NoCopyItem, "no_copy_bound", no_copy_bound;
NoSyncItem, "no_sync_bound", no_sync_bound;
ManagedItem, "managed_bound", managed_bound;

NonZeroItem, "non_zero", non_zero;
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6 changes: 1 addition & 5 deletions src/librustc/middle/traits/select.rs
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Expand Up @@ -1554,10 +1554,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
let tcx = this.tcx();
match bound {
ty::BoundSend => {
if
Some(def_id) == tcx.lang_items.no_send_bound() ||
Some(def_id) == tcx.lang_items.managed_bound()
{
if Some(def_id) == tcx.lang_items.managed_bound() {
return Err(Unimplemented)
}
}
Expand All @@ -1568,7 +1565,6 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {

ty::BoundSync => {
if
Some(def_id) == tcx.lang_items.no_sync_bound() ||
Some(def_id) == tcx.lang_items.managed_bound() ||
Some(def_id) == tcx.lang_items.unsafe_type()
{
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