ci: validate Microsoft.Z3.dll PE Machine field is AnyCPU in nightly build validation#9873
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[WIP] Fix .NET wrapper PE Machine field for arm64 support
ci: validate Microsoft.Z3.dll PE Machine field is AnyCPU in nightly build validation
Jun 15, 2026
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Microsoft.Z3.dllships with PEMachine=0x8664(AMD64), causing the CLR loader to reject it on arm64 .NET hosts (macOS/Linux/Windows ARM) even though the assembly is pure IL (CorFlags.ILONLY=True) and arm64 native libraries are already bundled in the package.Changes
.github/workflows/nightly-validation.yml— addsvalidate-dotnet-anycpujob to the Nightly Build Validation workflow:lib/netstandard2.0/Microsoft.Z3.dll(NuGet packages are ZIP archives)Machinefield from the PE header using PythonstructMachineis0x8664(AMD64) or0xAA64(ARM64); passes for0x014C(i386/AnyCPU) or0x0000The check catches any regression where the managed wrapper is compiled architecture-specific, blocking non-x64 .NET hosts from loading it.