Fix various block issues, see commit message#20
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This fixes a number of block-related issues in the codebase, as noted below. **This is a breaking change.** The API is changing to support these fixes. 1. Our flags had an off-by-one which meant our copy/dispose helpers were never being called. This caused other issues too like the refcount system not working properly so blocks would leak. 2. We were heap allocating a block but setting it as a stack allocated block. The proper behavior is to allocate it on the stack then let the ObjC runtime handle the copying via the compiler-rt. 3. Add manual copy/release helpers for blocks in case blocks are being passed around Zig code. This is needed because the Zig compiler won't automatically instrument the code like LLVM does for C-family languages. 4. Our copy helper that called `_Block_object_assign` was passing the wrong pointer value for the first parameter meaning reference counts weren't being incremented properly. Co-authored-by: qwerasd205 <qwerasd205@users.noreply.github.com>
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This fixes a number of block-related issues in the codebase, as noted below. This is a breaking change. The API is changing to support these fixes.
Our flags had an off-by-one which meant our copy/dispose helpers were never being called. This caused other issues too like the refcount system not working properly so blocks would leak.
We were heap allocating a block but setting it as a stack allocated block. The proper behavior is to allocate it on the stack then let the ObjC runtime handle the copying via the compiler-rt.
Add manual copy/release helpers for blocks in case blocks are being passed around Zig code. This is needed because the Zig compiler won't automatically instrument the code like LLVM does for C-family languages.
Our copy helper that called
_Block_object_assignwas passing the wrong pointer value for the first parameter meaning reference counts weren't being incremented properly.