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Fix iter_structural_ty_full for resource types

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The compiler would blow up when compiling a structural type
containing a resource.
This commit is contained in:
Marijn Haverbeke 2011-07-29 11:44:29 +02:00
parent 4642300683
commit 5adf87a2c6
2 changed files with 35 additions and 21 deletions
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37
src/comp/middle/trans.rs
View File

@ -1649,8 +1649,7 @@ fn make_cmp_glue(cx: &@block_ctxt, lhs0: ValueRef, rhs0: ValueRef, t: &ty::t,
ret rslt(cnt_cx, C_nil());
}
if ty::type_is_structural(bcx_tcx(cx), t) {
r =
iter_structural_ty_full(r.bcx, lhs, rhs, t,
r = iter_structural_ty_full(r.bcx, lhs, rhs, t,
bind inner(next, false, flag, llop, _,
_, _, _));
} else {
@ -1661,8 +1660,7 @@ fn make_cmp_glue(cx: &@block_ctxt, lhs0: ValueRef, rhs0: ValueRef, t: &ty::t,
let rhs_lim = r.bcx.build.GEP(rhs_p0, ~[min_len]);
let elt_ty = ty::sequence_element_type(bcx_tcx(cx), t);
r = size_of(r.bcx, elt_ty);
r =
iter_sequence_raw(r.bcx, lhs_p0, rhs_p0, rhs_lim, r.val,
r = iter_sequence_raw(r.bcx, lhs_p0, rhs_p0, rhs_lim, r.val,
bind inner(next, true, flag, llop, _, _, _,
elt_ty));
}
@ -1982,13 +1980,16 @@ fn iter_structural_ty_full(cx: &@block_ctxt, av: ValueRef, bv: ValueRef,
}
}
ty::ty_res(_, inner, tps) {
let inner1 = ty::substitute_type_params(bcx_tcx(cx), tps, inner);
r = GEP_tup_like(r.bcx, t, av, ~[0, 1]);
let tcx = bcx_tcx(cx);
let inner1 = ty::substitute_type_params(tcx, tps, inner);
let inner_t_s = ty::substitute_type_params(tcx, tps, inner);
let tup_t = ty::mk_imm_tup(tcx, ~[ty::mk_int(tcx), inner_t_s]);
r = GEP_tup_like(r.bcx, tup_t, av, ~[0, 1]);
let llfld_a = r.val;
r = GEP_tup_like(r.bcx, t, bv, ~[0, 1]);
r = GEP_tup_like(r.bcx, tup_t, bv, ~[0, 1]);
let llfld_b = r.val;
f(r.bcx, load_if_immediate(r.bcx, llfld_a, inner1),
load_if_immediate(r.bcx, llfld_b, inner1), inner1);
r = f(r.bcx, load_if_immediate(r.bcx, llfld_a, inner1),
load_if_immediate(r.bcx, llfld_b, inner1), inner1);
}
ty::ty_tag(tid, tps) {
let variants = ty::tag_variants(bcx_tcx(cx), tid);
@ -2059,18 +2060,12 @@ fn iter_structural_ty_full(cx: &@block_ctxt, av: ValueRef, bv: ValueRef,
// Iterates through a pointer range, until the src* hits the src_lim*.
fn iter_sequence_raw(cx: @block_ctxt, dst: ValueRef,
src:
// elt*
ValueRef,
src_lim:
// elt*
ValueRef,
elt_sz:
// elt*
ValueRef, f: &val_pair_fn) -> result {
// elt*
src: ValueRef,
// elt*
src_lim: ValueRef,
// elt*
elt_sz: ValueRef, f: &val_pair_fn) -> result {
let bcx = cx;
let dst_int: ValueRef = vp2i(bcx, dst);
let src_int: ValueRef = vp2i(bcx, src);

19
src/test/run-pass/resource-in-struct.rs Normal file
View File

@ -0,0 +1,19 @@
// Ensures that putting resources inside structual types keeps
// working.
type closable = @mutable bool;
resource close_res(i: closable) {
*i = false;
}
tag option[T] { none; some(T); }
fn sink(res: option[close_res]) {}
fn main() {
let c = @mutable true;
sink(none);
sink(some(close_res(c)));
assert !*c;
}