fossilize-synth - Can't create shader with

I hit this as trying to instrument this pipeline (from a a vkd3d title using Descriptor Buffers on Intel Mesa) with GPU-AV running on caused the driver to crash and wanted to create a repro, but hitting

$ fossilize-synth --frag dump_frag.spv --output repro.foz

Fossilize ERROR: Overlap in descriptor type for binding (2, 0) (was 6, now 7).

I pulled out the shader and seems valid https://godbolt.org/z/cadKMvben

I see this is around the whole HLSL having CBV vs SSBO stuff

layout(set = 2, binding = 0, std430) restrict readonly buffer SSBO {
    uint _m0[];
} _23[];

layout(set = 2, binding = 0, std430) restrict readonly buffer _26_29 {
    uvec4 _m0[];
} _29[];

layout(set = 2, binding = 0, std140) uniform BindlessCBV {
    vec4 _m0[4096];
} _36[];

not sure who is at fault here, but if this is valid SPIR-V, I guess not sure if this is a limitation of fossilize-synth... but at the same time, not sure what the VK_EXT_descriptor_buffer API side looks like

Start by reproducing the report with fossilize-synth --frag dump_frag.spv --output repro.foz and examine the provided shader's set 2, binding 0 declarations. Compare the reported descriptor-type overlap with the relevant Vulkan descriptor-buffer rules. No source file or test is named; done means determining whether the SPIR-V is valid and whether Fossilize should accept it or clearly report a limitation.