Backport Do not feed &"" to D3DCompile (#5812) to 0.18 #5834
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A recent change by rustc, now in 1.79-stable, makes empty str constants point to the same location: 0x01. This is an optimization of sorts, not stable behavior. Code must not rely on constants having stable addresses nor should it pass &"" to APIs expecting CStrs or NULL addresses. D3DCompile will segfault if you give it such a pointer, or worse: read random garbage addresses! Pass the NULL pointer to D3DCompile if wgpu lacks a decent CString. refs: - https://learn.microsoft.com/en-us/windows/win32/api/d3dcompiler/nf-d3dcompiler-d3dcompile Co-authored-by: Jan Hohenheim <jan@hohenheim.ch> Co-authored-by: Brezak <bezak.adam@proton.me>
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I'm not 100% sure about the wasm-bindgen bump here, as iirc there's issues around having mismatched versions of it (though the 2.88 version wgpu 0.18 uses was yanked). |
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I'm going ot close this for now as there's not significant interest in getting this in. If it comes back, we can push it forward. |
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Backport Do not feed &"" to D3DCompile (#5812) to 0.18.
Testing was just running the water example with dx12+fxc, and it worked.
Veloren seems to be on 0.18 (specifically a custom branch that includes some fixes from newer wgpu versions).
Checklist
cargo fmt.cargo clippy. If applicable, add:--target wasm32-unknown-unknown--target wasm32-unknown-emscriptencargo xtask testto run tests.CHANGELOG.md. See simple instructions inside file.