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It was added 3 years ago as a workaround for Clang MS vtable layouting bugs which have since been solved upstream.pull/742/head
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using System.Linq; |
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using CppSharp.AST; |
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using CppSharp.Utils; |
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namespace CppSharp.Passes |
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{ |
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/// <summary>
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/// This pass checks for vftable entries with duplicated components.
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/// This might happen because of bugs in Clang vftable layouting.
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/// </summary>
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public class CheckVTableComponentsPass : TranslationUnitPass |
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{ |
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public override bool VisitClassDecl(AST.Class @class) |
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{ |
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foreach (var vfptr in @class.Layout.VFTables) |
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{ |
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var uniqueEntries = new OrderedSet<VTableComponent>(); |
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foreach (var entry in vfptr.Layout.Components) |
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uniqueEntries.Add(entry); |
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// The vftable does not have duplicated components.
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if (vfptr.Layout.Components.Count == uniqueEntries.Count) |
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continue; |
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Diagnostics.Warning( |
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"Class '{0}' found with duplicated vftable components", |
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@class.Name); |
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vfptr.Layout.Components = uniqueEntries.ToList(); |
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} |
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return base.VisitClassDecl(@class); |
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} |
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} |
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} |
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