language-servers/roc
1
0
Fork 0
mirror of https://github.com/roc-lang/roc.git synced 2025-09-27 22:09:09 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

box fixes

Browse source
This commit is contained in:
Folkert 2021-07-13 00:42:21 +02:00
parent 3bf46ff662
commit 83bea1582f
2 changed files with 27 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

27
compiler/gen_llvm/src/llvm/build.rs
View file

@ -2489,7 +2489,32 @@ pub fn build_exp_stmt<'a, 'ctx, 'env>(
Dec(symbol) => {
let (value, layout) = load_symbol_and_layout(scope, symbol);
if layout.contains_refcounted() {
if let Layout::Boxed(_) = layout {
if value.is_pointer_value() {
let value_ptr = value.into_pointer_value();
let then_block = env.context.append_basic_block(parent, "then");
let done_block = env.context.append_basic_block(parent, "done");
let condition =
env.builder.build_is_not_null(value_ptr, "box_is_not_null");
env.builder
.build_conditional_branch(condition, then_block, done_block);
{
env.builder.position_at_end(then_block);
let refcount_ptr =
PointerToRefcount::from_ptr_to_data(env, value_ptr);
refcount_ptr.decrement(env, layout);
env.builder.build_unconditional_branch(done_block);
}
env.builder.position_at_end(done_block);
} else {
eprint!("we're likely leaking memory; see issue #985 for details");
}
} else if layout.contains_refcounted() {
decrement_refcount_layout(env, parent, layout_ids, value, layout);
}