Do not crash if we are passed a null compilation in EnumerateSymbols

Fixes dotnet#11092
jmarolf · May 6, 2016 · cab53cf · cab53cf
1 parent 2f7f0d3
commit cab53cf
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/Workspaces/Core/Portable/SymbolId/SymbolKey.BodyLevelSymbolKey.cs b/src/Workspaces/Core/Portable/SymbolId/SymbolKey.BodyLevelSymbolKey.cs
@@ -63,6 +63,10 @@ internal NonDeclarationSymbolKey(TSymbol symbol, Visitor visitor)
             private static IEnumerable<ValueTuple<TSymbol, int>> EnumerateSymbols(Compilation compilation, ISymbol containingSymbol, string name, CancellationToken cancellationToken)
             {
                 int ordinal = 0;
+                if (compilation == null)
+                {
+                    yield break;
+                }
 
                 foreach (var declaringLocation in containingSymbol.DeclaringSyntaxReferences)
                 {