Variable not found error (in launch.json) should not be catastrophic

[lrbarber]

Description

If a variable definition has been added to the launch.json file, but that variable does not exist in the schema the debugger will not start.

Steps to Reproduce

1. Add a viarable defintion to the launch.json file:

2. Launch debugger with launch.json file
3. See pop-up error

Expected Behavior

This should probably just generate a warning. Definitely does not need to be an error that prevents debugger from running.

Actual Behavior

Catastrophic error that aborts debugger.

Environment

• Found on Windows 11 (but probably NOT OS dependent)
• Extension version 1.5.0 RC 1

[lrbarber]

It does seem that this error is coming from Daffodil itself...

2025-12-10 14:12:07,472 [io-compute-4] ERROR o.a.d.d.d.DAPSession - couldn't launch, request #2 launch {"request":"launch","type":"dfdl","name":"Wizard Config","schema":{"path":"C:\Users\larry.barber\OneDrive - Nteligen\Documents\PaxRiver\rdds.dfdl.xsd","rootName":null,"rootNamespace":null},"data":"C:\Users\larry.barber\OneDrive - Nteligen\Documents\PaxRiver\rug.rdds","debugServer":4715,"infosetFormat":"xml","infosetOutput":{"type":"file","path":"C:\Users\larry.barber\OneDrive - Nteligen\Documents\PaxRiver/target/infoset.xml"},"tdmlConfig":{"action":"generate","name":"undefined","path":"C:\Users\LARRY~1.BAR\AppData\Local\Temp\generatedTDML.tdml"},"trace":true,"stopOnEntry":true,"useExistingServer":false,"openDataEditor":true,"openInfosetView":true,"openInfosetDiffView":false,"variables":{"foo":"bar"},"tunables":{"maxOccursBounds":"256"},"daffodilDebugClasspath":[],"dataEditor":{"port":9000,"logging":{"file":"C:\Users\larry.barber\OneDrive - Nteligen\Documents\PaxRiver/dataEditor-${omegaEditPort}.log","level":"info"}},"dfdlDebugger":{"daffodilVersion":"4.0.0","timeout":"10s","logging":{"level":"INFO","file":"C:\Users\larry.barber\OneDrive - Nteligen\Documents\PaxRiver/daffodil-debugger.log"}},"__configurationTarget":6,"__sessionId":"f4911bfd-a149-4c62-9a0c-11e344dbef7f"}
org.apache.daffodil.runtime1.processors.ExternalVariableException: Variable definition not found: foo
at org.apache.daffodil.runtime1.processors.VariableMap.setExtVariable(VariableMap1.scala:553)
at org.apache.daffodil.runtime1.processors.VariableUtils$.setExternalVariables$$anonfun$1(VariableMap1.scala:147)
at println @ com.monovore.decline.effect.CommandIOApp$.addVersionFlag(CommandIOApp.scala:67)
at ensureOr$extension @ org.apache.daffodil.debugger.dap.DAPCompiler$$anon$1.compile(Compiler.scala:44)
at map @ org.apache.daffodil.debugger.dap.DAPCompiler$$anon$1.compile(Compiler.scala:45)
at map @ org.apache.daffodil.debugger.dap.Parse$.apply(Parse.scala:85)
at flatMap @ org.apache.daffodil.debugger.dap.Parse$.apply(Parse.scala:83)
at println @ com.monovore.decline.effect.CommandIOApp$.addVersionFlag(CommandIOApp.scala:67)
at map @ org.apache.daffodil.debugger.dap.Parse$Debugee$LaunchArgs$Manual.data(Parse.scala:259)
at flatMap @ org.apache.daffodil.debugger.dap.Parse$.debugee$$anonfun$2$$anonfun$1$$anonfun$1$$anonfun$1$$anonfun$1$$anonfun$1(Parse.scala:700)