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vkd3d-shader: Avoid passing NULL to memcpy(). (ubsan)

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Otherwise when passing "-fsanitize=undefined" to the compiler, ubsan
reports such as:

   libs/vkd3d-shader/ir.c:3794:5: runtime error: null pointer passed as argument 1, which is declared to never be null
This commit is contained in:
Francisco Casas
2024-12-18 16:04:15 -03:00
committed by Henri Verbeet
parent 29bac62ba2
commit eaf4d0bfbf
Notes: Henri Verbeet 2025-01-10 20:15:12 +01:00 
Approved-by: Elizabeth Figura (@zfigura)
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1327
2 changed files with 6 additions and 3 deletions
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3
libs/vkd3d-shader/vkd3d_shader_main.c
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@@ -396,7 +396,8 @@ size_t bytecode_put_bytes_unaligned(struct vkd3d_bytecode_buffer *buffer, const
buffer->status = VKD3D_ERROR_OUT_OF_MEMORY;
return offset;
}
memcpy(buffer->data + offset, bytes, size);
if (size)
memcpy(&buffer->data[offset], bytes, size);
buffer->size = offset + size;
return offset;
}