bjoernager/rust
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rustc: Zero out slots after dropping them

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This commit is contained in:
Patrick Walton 2010-12-17 17:21:56 -08:00
parent 56e040e61a
commit c44c7c5ab3
1 changed files with 8 additions and 2 deletions
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10
src/comp/middle/trans.rs
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@ -768,7 +768,7 @@ fn type_of_variant(@crate_ctxt cx, &ast.variant v) -> TypeRef {
type val_and_ty_fn =
fn(@block_ctxt cx, ValueRef v, @typeck.ty t) -> result;
// Iterates through the elements of a tup, rec or tag.
// Iterates through the elements of a box, tup, rec or tag.
fn iter_structural_ty(@block_ctxt cx,
ValueRef v,
@typeck.ty t,
@ -968,7 +968,13 @@ fn incr_all_refcnts(@block_ctxt cx,
fn drop_slot(@block_ctxt cx,
ValueRef slot,
@typeck.ty t) -> result {
be drop_ty(cx, load_non_structural(cx, slot, t), t);
auto llptr = load_non_structural(cx, slot, t);
auto re = drop_ty(cx, llptr, t);
auto llty = val_ty(slot);
auto llelemty = lib.llvm.llvm.LLVMGetElementType(llty);
re.bcx.build.Store(C_null(llelemty), slot);
ret re;
}
fn drop_ty(@block_ctxt cx,