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Improve resiliency of custom attribute parsing #101164

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Apr 17, 2024
Merged

Improve resiliency of custom attribute parsing #101164

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7 changes: 7 additions & 0 deletions ...LCompiler.Compiler/Compiler/DependencyAnalysis/CustomAttributeBasedDependencyAlgorithm.cs
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System;
using System.Collections.Immutable;
using System.Diagnostics;
using System.Reflection.Metadata;
Expand Down Expand Up @@ -151,6 +152,12 @@ private static void AddDependenciesDueToCustomAttributes(ref DependencyList depe
// worth the hassle: the input was invalid. The most important thing is that we
// don't crash the compilation.
}
catch (BadImageFormatException)
{
// System.Reflection.Metadata will throw BadImageFormatException if the blob is malformed.
// This can happen if e.g. underlying type of an enum changes between versions and
// we can no longer decode the custom attribute blob.
}
}
}

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