Internal Compiler Error

Thomas Fischer

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Sep 26, 2013, 11:53:03 AM9/26/13

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Hi,
I currently play with goog.scope() and it crashes the CC when I try to compile this code:

goog.provide("main");

goog.scope (function (){

var a = foo, b, c = 1;

});

Here the console.log:

>> buildtools/closure-library/closure/bin/build/closurebuilder.py: Compiling with the following command: java -jar buildtools/closure-compiler/compiler.jar --js buildtools/closure-library/closure/goog/base.js --js src/main/main.js --output_wrapper='(function() {%output%})();' --formatting=PRETTY_PRINT --generate_exports --create_source_map=dist/0.1.0//compressed/heremaps.js.map --accept_const_keyword --compilation_level=ADVANCED_OPTIMIZATIONS

>> src/main/main.js:3: ERROR - The local variable b is in a goog.scope and is not an alias.

>> var a = foo, b, c = 1;

>> ^

>> 1 error(s), 0 warning(s)

>> java.lang.RuntimeException: java.lang.RuntimeException: INTERNAL COMPILER ERROR.

>> Please report this problem.

>> null

>> Node(FUNCTION ): src/main/main.js:2:12

>> goog.scope (function (){

>> Parent(CALL): src/main/main.js:2:0

>> goog.scope (function (){

>>

>> at com.google.javascript.jscomp.Compiler.runInCompilerThread(Compiler.java:715)

>> at com.google.javascript.jscomp.Compiler.compile(Compiler.java:647)

>> at com.google.javascript.jscomp.Compiler.compile(Compiler.java:603)

>> at com.google.javascript.jscomp.AbstractCommandLineRunner.doRun(AbstractCommandLineRunner.java:771)

>> at com.google.javascript.jscomp.AbstractCommandLineRunner.run(AbstractCommandLineRunner.java:372)

>> at com.google.javascript.jscomp.CommandLineRunner.main(CommandLineRunner.java:976)

>> Caused by: java.lang.RuntimeException: INTERNAL COMPILER ERROR.

>> Please report this problem.

>> null

>> Node(FUNCTION ): src/main/main.js:2:12

>> goog.scope (function (){

>> Parent(CALL): src/main/main.js:2:0

>> goog.scope (function (){

>>

>> at com.google.javascript.jscomp.Compiler.ensureLibraryInjected(Compiler.java:2554)

>> at com.google.javascript.jscomp.ScopedAliases$Traversal.findAliases(ScopedAliases.java:373)

>> at com.google.javascript.jscomp.ScopedAliases$Traversal.enterScope(ScopedAliases.java:298)

>> at com.google.javascript.jscomp.NodeTraversal.pushScope(NodeTraversal.java:600)

>> at com.google.javascript.jscomp.NodeTraversal.traverseFunction(NodeTraversal.java:558)

>> at com.google.javascript.jscomp.NodeTraversal.traverseBranch(NodeTraversal.java:528)

>> at com.google.javascript.jscomp.NodeTraversal.traverseBranch(NodeTraversal.java:534)

>> at com.google.javascript.jscomp.NodeTraversal.traverse(NodeTraversal.java:287)

>> at com.google.javascript.jscomp.NodeTraversal.traverse(NodeTraversal.java:494)

>> at com.google.javascript.jscomp.ScopedAliases.hotSwapScript(ScopedAliases.java:133)

>> at com.google.javascript.jscomp.ScopedAliases.process(ScopedAliases.java:127)

>> at com.google.javascript.jscomp.PhaseOptimizer$NamedPass.process(PhaseOptimizer.java:271)

>> at com.google.javascript.jscomp.PhaseOptimizer.process(PhaseOptimizer.java:215)

>> at com.google.javascript.jscomp.Compiler.check(Compiler.java:825)

>> at com.google.javascript.jscomp.Compiler.compileInternal(Compiler.java:742)

>> at com.google.javascript.jscomp.Compiler.access$000(Compiler.java:83)

>> at com.google.javascript.jscomp.Compiler$2.call(Compiler.java:650)

>> at com.google.javascript.jscomp.Compiler$2.call(Compiler.java:647)

>> at com.google.javascript.jscomp.Compiler$3.call(Compiler.java:677)

>> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)

>> at java.util.concurrent.FutureTask.run(FutureTask.java:138)

>> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)

>> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)

>> at java.lang.Thread.run(Thread.java:680)

>> Caused by: java.lang.NullPointerException

>> ... 27 more

>> buildtools/closure-library/closure/bin/build/closurebuilder.py: JavaScript compilation failed.

>> Exited with code: 1.

John Lenz

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Sep 26, 2013, 11:59:41 AM9/26/13

to closure-compiler

What version of the compiler are you using?

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Thomas Fischer

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Sep 26, 2013, 12:17:20 PM9/26/13

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Hi John, I'm using

Version: v20130823

Built on: 2013/08/26 10:59

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John Lenz

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Sep 27, 2013, 1:14:50 AM9/27/13

to closure-compiler, Nick Santos

Originally, all locals to goog.scope needed to be alias of global objects. Nick recently made a change here. I thought this was now allowed.

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Nick Santos

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Sep 27, 2013, 3:04:14 AM9/27/13

to John Lenz, Nick Santos, closure-compiler

Thanks for the report, I'll try to take a look early next week.

Nick Santos

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Sep 27, 2013, 12:11:27 PM9/27/13

to John Lenz, Nick Santos, closure-compiler

posted here:
https://code.google.com/p/closure-compiler/issues/detail?id=1103

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