[FLEX-35226] [Falcon] Compiler crashes with stack trace if MXML file is empty

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Apache FlexJS 0.7.0
• Fix Version/s: Apache FalconJX 0.8.0
• Component/s: Falcon
• Assignee: Josh Tynjala
• Reporter: Josh Tynjala
• Created: 20/Dec/16 16:38
• Updated: 20/Dec/16 19:18
• Resolved: 20/Dec/16 18:32

Description

<flexjs>/js/bin/mxmlc src/Main.mxml
Using Falcon codebase: /Users/joshtynjala/Development/Flex/sdks/flexjs-nightly/js/bin/../..
Using Flex SDK: /Users/joshtynjala/Development/Flex/sdks/flexjs-nightly/js/bin/../..
/Users/joshtynjala/Desktop/TestFlexJS/src/Main.mxml Internal error in syntax tree request subsystem, when generating code for: /Users/joshtynjala/Desktop/TestFlexJS/src/Main.mxml: java.lang.ArrayIndexOutOfBoundsException: 0
at org.apache.flex.compiler.internal.units.MXMLCompilationUnit.handleSyntaxTreeRequest(MXMLCompilationUnit.java:89)
at org.apache.flex.compiler.internal.units.CompilationUnitBase.processSyntaxTreeRequest(CompilationUnitBase.java:836)
at org.apache.flex.compiler.internal.units.CompilationUnitBase.access$100(CompilationUnitBase.java:108)
at org.apache.flex.compiler.internal.units.CompilationUnitBase$2$1.call(CompilationUnitBase.java:260)
at org.apache.flex.compiler.internal.units.CompilationUnitBase$2$1.call(CompilationUnitBase.java:256)
at org.apache.flex.compiler.internal.units.requests.RequestMaker$1.call(RequestMaker.java:228)
at org.apache.flex.compiler.internal.units.requests.RequestMaker$1.call(RequestMaker.java:222)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

/Users/joshtynjala/Desktop/TestFlexJS/src/Main.mxml Internal error in file scope builder subsystem, when generating code for: /Users/joshtynjala/Desktop/TestFlexJS/src/Main.mxml: java.lang.NullPointerException
at org.apache.flex.compiler.internal.units.requests.ASFileScopeRequestResult.checkExternallyVisibleDefinitions(ASFileScopeRequestResult.java:101)
at org.apache.flex.compiler.internal.units.requests.ASFileScopeRequestResult.checkExternallyVisibleDefinitions(ASFileScopeRequestResult.java:121)
at org.apache.flex.compiler.internal.units.requests.ASFileScopeRequestResult.<init>(ASFileScopeRequestResult.java:58)
at org.apache.flex.compiler.internal.units.MXMLCompilationUnit.handleFileScopeRequest(MXMLCompilationUnit.java:180)
at org.apache.flex.compiler.internal.units.CompilationUnitBase.processFileScopeRequest(CompilationUnitBase.java:861)
at org.apache.flex.compiler.internal.units.CompilationUnitBase.access$200(CompilationUnitBase.java:108)
at org.apache.flex.compiler.internal.units.CompilationUnitBase$3$1.call(CompilationUnitBase.java:285)
at org.apache.flex.compiler.internal.units.CompilationUnitBase$3$1.call(CompilationUnitBase.java:281)
at org.apache.flex.compiler.internal.units.requests.RequestMaker$1.call(RequestMaker.java:228)
at org.apache.flex.compiler.internal.units.requests.RequestMaker$1.call(RequestMaker.java:222)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

/Users/joshtynjala/Desktop/TestFlexJS/src/Main.mxml Internal error in outgoing dependency subsystem, when generating code for: /Users/joshtynjala/Desktop/TestFlexJS/src/Main.mxml: java.lang.NullPointerException
at org.apache.flex.compiler.internal.units.CompilationUnitBase.startParsingImports(CompilationUnitBase.java:907)
at org.apache.flex.compiler.internal.units.MXMLCompilationUnit.handleOutgoingDependenciesRequest(MXMLCompilationUnit.java:240)
at org.apache.flex.compiler.internal.units.CompilationUnitBase.processOutgoingDependenciesRequest(CompilationUnitBase.java:889)
at org.apache.flex.compiler.internal.units.CompilationUnitBase.access$500(CompilationUnitBase.java:108)
at org.apache.flex.compiler.internal.units.CompilationUnitBase$6$1.call(CompilationUnitBase.java:385)
at org.apache.flex.compiler.internal.units.CompilationUnitBase$6$1.call(CompilationUnitBase.java:381)
at org.apache.flex.compiler.internal.units.requests.RequestMaker$1.call(RequestMaker.java:228)
at org.apache.flex.compiler.internal.units.requests.RequestMaker$1.call(RequestMaker.java:222)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

/Users/joshtynjala/Desktop/TestFlexJS/src/Main.mxml Internal error in ABC generator subsystem, when generating code for: /Users/joshtynjala/Desktop/TestFlexJS/src/Main.mxml: java.lang.NullPointerException
at org.apache.flex.compiler.internal.units.EmbedCompilationUnitFactory.collectEmbedDatas(EmbedCompilationUnitFactory.java:132)
at org.apache.flex.compiler.internal.as.codegen.ABCGenerator.generate(ABCGenerator.java:180)
at org.apache.flex.compiler.internal.units.MXMLCompilationUnit.handleABCBytesRequest(MXMLCompilationUnit.java:199)
at org.apache.flex.compiler.internal.units.CompilationUnitBase.processABCBytesRequest(CompilationUnitBase.java:873)
at org.apache.flex.compiler.internal.units.CompilationUnitBase.access$300(CompilationUnitBase.java:108)
at org.apache.flex.compiler.internal.units.CompilationUnitBase$4$1.call(CompilationUnitBase.java:310)
at org.apache.flex.compiler.internal.units.CompilationUnitBase$4$1.call(CompilationUnitBase.java:306)
at org.apache.flex.compiler.internal.units.requests.RequestMaker$1.call(RequestMaker.java:228)
at org.apache.flex.compiler.internal.units.requests.RequestMaker$1.call(RequestMaker.java:222)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

In the currently nightly, an empty ActionScript file will creates a proper problem instead, and it should be the same with MXML:

<flexjs>/js/bin/asjsc src/Main.as
Using Falcon codebase: /Users/joshtynjala/Development/Flex/sdks/flexjs-nightly/js/bin/../..
Using Flex SDK: /Users/joshtynjala/Development/Flex/sdks/flexjs-nightly/js/bin/../..
/Users/joshtynjala/Desktop/TestFlexJS/src/Main.as No externally-visible definition with the name 'Main' was found.

/Users/joshtynjala/Desktop/TestFlexJS/src/Main.as No externally-visible definition with the name 'Main' was found.

It appears that an ActionScript file has a similar stack trace if compiled with FlexJS 0.7.0, so something has been fixed on the ActionScript side in the nightlies.