microsoft / microsoft/DirectXShaderCompiler
[SPIR-V] Crash when using local struct with ByteAddressBuffer/StructuredBuffer memeber and -fspv-debug=vulkan-with-source
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@SteveUrquhart is already working on this.
Since Dec 18, 2025.
bug
spirv
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Description
Description
DXC returns SIGSEGV when using a local variable in a function with struct type that has a ByteAddressBuffer/StructuredBuffer member
Steps to Reproduce
https://godbolt.org/z/Yj8635bEr
If a function that uses the struct is added instead of crashing, invalid spirv is generated
https://godbolt.org/z/Psbfqndo5
Actual Behavior
SIGSEV or
fatal error: generated SPIR-V is invalid: In Logical addressing, variables may not allocate a pointer type
%68 = OpVariable %_ptr_Function__ptr_Uniform_type_ByteAddressBuffer Function
Environment
DXC Trunk
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