Fix using DependencyGraphViewer with AOT compilers #76357
Merged
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The
readonly
was added in #74825.MarkStrategy
can have mutable state that was getting lost because Roslyn considers it necessary to put_marker
into a temporary before calling instance methods on it.This resulted in DependencyGraphViewer hanging after seeing tens of thousands of new graphs being added.
Cc @dotnet/ilc-contrib