C# 15 (.NET 11 preview 5) encodes the closed modifier as
System.Runtime.CompilerServices.ClosedAttribute on the implicitly
abstract type plus CompilerFeatureRequired("ClosedClasses") on every
constructor; the BCL does not ship the attribute yet, so assemblies
declare their own copy or reference one from another assembly. The
decompiler now reconstructs the modifier from this encoding, gated on a
new C# 15 ClosedHierarchies setting. Exported projects state LangVersion
preview because the compiler does not accept 15.0 yet.
The pretty tests cover the definition side only: switch exhaustiveness
over a closed hierarchy is compile-time knowledge that leaves no trace
in the IL of consuming code.
Compiling "#dependency" test assemblies to a temp file left them
unresolvable while decompiling the main test assembly; they now land
next to the main output. With its dependency resolvable, Issue3684 no
longer needs the disambiguating base-class cast. The cross-assembly
fixture also exposed a latent NRE in RecordDecompiler when a record's
base type cannot be resolved.
Assisted-by: Claude:claude-fable-5:Claude Code
- Set 'LogicalName' attribute for all decompiled resources. This makes it possible to correctly recompile projects with resource names that are not valid filenames.
- Set Generator and SubType properties for XAML files.
Christoph Wille
Siegfried Pammer
Peter Crabtree
ds5678
Daniel Grunwald
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