Fix instance size emission in ILCompiler to handle indeterminate sizes #115293
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Tagging subscribers to this area: @agocke, @MichalStrehovsky, @jkotas |
src/coreclr/tools/aot/ILCompiler.Compiler/Compiler/UserDefinedTypeDescriptor.cs
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This PR fixes incorrect class size emission for reference types in NativeAOT PDBs, which caused IDA and other debuggers to ignore most fields.
See discussion and issue here:
#115283 (comment)
Before this fix, the emitted size would always be the pointer size (e.g., 8), even if the actual instance size was known and available. This caused debuggers to parse only the base class portion of the type.
After this fix, we use
defType.InstanceByteCountinstead ofGetElementSize()for class types when the size is determinate.