Repository navigation
System.InvalidOperationException: variable '' of type 'Program+TickDataDto' referenced from scope '', but it is not defined #921
Description
Version: 10.0.7
System.InvalidOperationException: variable '' of type 'Program+TickDataDto' referenced from scope '', but it is not defined
at System.Linq.Expressions.Compiler.VariableBinder.Reference(ParameterExpression node, VariableStorageKind storage)
at System.Linq.Expressions.Compiler.VariableBinder.VisitParameter(ParameterExpression node)
at System.Linq.Expressions.ExpressionVisitor.VisitMember(MemberExpression node)
at System.Linq.Expressions.ExpressionVisitor.VisitBinary(BinaryExpression node)
at System.Linq.Expressions.ExpressionVisitor.VisitConditional(ConditionalExpression node)
at System.Linq.Expressions.ExpressionVisitor.Visit(ReadOnlyCollection`1 nodes)
at System.Linq.Expressions.Compiler.VariableBinder.VisitBlock(BlockExpression node)
at System.Linq.Expressions.ExpressionVisitor.Visit(ReadOnlyCollection`1 nodes)
at System.Linq.Expressions.Compiler.VariableBinder.VisitBlock(BlockExpression node)
at System.Linq.Expressions.ExpressionVisitor.Visit(ReadOnlyCollection`1 nodes)
at System.Linq.Expressions.Compiler.VariableBinder.VisitLambda[T](Expression`1 node)
at System.Linq.Expressions.Compiler.LambdaCompiler.Compile(LambdaExpression lambda)
at Mapster.TypeAdapterConfig.<>c.<.ctor>b__47_1(LambdaExpression lambda)
at Mapster.TypeAdapterConfig.<GetDynamicMapFunction>b__71_0[TDestination](TypeTuple tuple)
at Mapster.TypeAdapterConfig.<>c__DisplayClass60_0`1.<AddToHash>b__0(TypeTuple types)
at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
at Mapster.TypeAdapterConfig.AddToHash[T](ConcurrentDictionary`2 hash, TypeTuple key, Func`2 func)
at Mapster.TypeAdapterConfig.GetDynamicMapFunction[TDestination](Type sourceType)
at Mapster.TypeAdapter.Adapt[TDestination](Object source, TypeAdapterConfig config)
at Mapster.TypeAdapter.Adapt[TDestination](Object source)
at Program.<>c.<Main>b__2_0() in C:\work\ConsoleApp1\ConsoleApp1\Program.cs:line 38
System.InvalidOperationException: variable '' of type 'Program+TickDataDto' referenced from scope '', but it is not defined
at System.Linq.Expressions.Compiler.VariableBinder.Reference(ParameterExpression node, VariableStorageKind storage)
at System.Linq.Expressions.Compiler.VariableBinder.VisitParameter(ParameterExpression node)
at System.Linq.Expressions.ExpressionVisitor.VisitMember(MemberExpression node)
at System.Linq.Expressions.ExpressionVisitor.VisitBinary(BinaryExpression node)
at System.Linq.Expressions.ExpressionVisitor.VisitConditional(ConditionalExpression node)
at System.Linq.Expressions.ExpressionVisitor.Visit(ReadOnlyCollection`1 nodes)
at System.Linq.Expressions.Compiler.VariableBinder.VisitBlock(BlockExpression node)
at System.Linq.Expressions.ExpressionVisitor.Visit(ReadOnlyCollection`1 nodes)
at System.Linq.Expressions.Compiler.VariableBinder.VisitBlock(BlockExpression node)
at System.Linq.Expressions.ExpressionVisitor.Visit(ReadOnlyCollection`1 nodes)
at System.Linq.Expressions.Compiler.VariableBinder.VisitLambda[T](Expression`1 node)
at System.Linq.Expressions.Compiler.LambdaCompiler.Compile(LambdaExpression lambda)
at Mapster.TypeAdapterConfig.<>c.<.ctor>b__47_1(LambdaExpression lambda)
at Mapster.TypeAdapterConfig.<GetDynamicMapFunction>b__71_0[TDestination](TypeTuple tuple)
at Mapster.TypeAdapterConfig.<>c__DisplayClass60_0`1.<AddToHash>b__0(TypeTuple types)
at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
at Mapster.TypeAdapterConfig.AddToHash[T](ConcurrentDictionary`2 hash, TypeTuple key, Func`2 func)
at Mapster.TypeAdapterConfig.GetDynamicMapFunction[TDestination](Type sourceType)
at Mapster.TypeAdapter.Adapt[TDestination](Object source, TypeAdapterConfig config)
at Mapster.TypeAdapter.Adapt[TDestination](Object source)
at Program.<>c.<Main>b__2_0() in C:\work\ConsoleApp1\ConsoleApp1\Program.cs:line 38
Code:
public record TickData
{
public string Symbol { get; init; } = "";
}
public record TickDataDto
{
public string Symbol { get; init; } = "";
}
private static async Task Main(string[] args)
{
TypeAdapterConfig.GlobalSettings.Default
.IgnoreNullValues(true);
for (int i = 0; i < 2; i++)
{
Task.Run(() =>
{
try
{
new TickDataDto().Adapt<TickData>();
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
});
}
await Task.Delay(1000);
}Remove .IgnoreNullValues(true) will not cause the exception.
Activity
fix: fix race condition when mapping to RecordType using IgnoreNullVa…
DocSvartz commentedon Apr 21, 2026
Hi @kanade133. This should be fixed in https://www.nuget.org/packages/Mapster/10.0.8-pre03