nordic-dev.net/rust
nordic-dev.net/rust
2
0
Fork 0
mirror of https://github.com/rust-lang/rust.git synced 2024-11-30 10:45:18 +00:00
Code Issues Packages Projects Releases Wiki Activity

rustc: Perform a cast in vector initialization due to changing layers of indirection. Keep test/run-pass/size-and-align.rs XFAIL'd due to a leak in rustboot.

Browse Source
This commit is contained in:
Patrick Walton 2011-03-10 10:40:44 -08:00
parent 7505c1fa23
commit 36b81abf61
1 changed files with 21 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
src/comp/middle/trans.rs
View File

@ -4050,7 +4050,27 @@ fn trans_vec(@block_ctxt cx, vec[@ast.expr] args,
bcx = src_res.bcx;
auto dst_res = GEP_tup_like(bcx, pseudo_tup_ty, body, vec(0, i));
bcx = dst_res.bcx;
bcx = copy_ty(bcx, INIT, dst_res.val, src_res.val, unit_ty).bcx;
// Cast the destination type to the source type. This is needed to
// make tags work, for a subtle combination of reasons:
//
// (1) "dst_res" above is derived from "body", which is in turn
// derived from "vec_val".
// (2) "vec_val" has the LLVM type "llty".
// (3) "llty" is the result of calling type_of() on a vector type.
// (4) For tags, type_of() returns a different type depending on
// on whether the tag is behind a box or not. Vector types are
// considered boxes.
// (5) "src_res" is derived from "unit_ty", which is not behind a box.
auto dst_val;
if (!ty.type_has_dynamic_size(unit_ty)) {
dst_val = bcx.build.PointerCast(dst_res.val, T_ptr(llunit_ty));
} else {
dst_val = dst_res.val;
}
bcx = copy_ty(bcx, INIT, dst_val, src_res.val, unit_ty).bcx;
i += 1;
}
auto fill = bcx.build.GEP(vec_val,