Re: GWT compile stuck

[Alaa Humaidat]

I was only able to fix the error above *ecj *from from *apache-jsp* per the 
suggestions here 

```

org.eclipse.jetty
apache-jsp
${jetty.version}


org.eclipse.jdt
ecj



```
On Sunday, February 26, 2023 at 5:14:04 PM UTC+3 Alaa Humaidat wrote:

> Actually, after a few tries, I started getting compilation errors on all 
> lines containing logical operators. For example, 
> ```
> public void onClick(ClickEvent event) {
>* if ( ! selectedOptionsList.isEmpty()) {*
> repOptfPanel.clear();
> for (String str : selectedOptionsList) {
> Label label = new Label(str);
> 
> label.getElement().getStyle().setProperty("float", "left");
> 
> label.getElement().getStyle().setProperty("margin", "3px");
> repOptfPanel.add(label);
> }
>
> ReprocessOptionsDialog.this.hide();
> }
> }
> ```
> doesn't compile due to the following error:
> ```
> [ERROR] An internal compiler exception occurred
> com.google.gwt.dev.jjs.InternalCompilerException: Unexpected operator for 
> unary expression
> at 
> com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.endVisit(GwtAstBuilder.java:2377)
> at 
> org.eclipse.jdt.internal.compiler.ast.UnaryExpression.traverse(UnaryExpression.java:353)
> at 
> org.eclipse.jdt.internal.compiler.ast.IfStatement.traverse(IfStatement.java:329)
> at 
> org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:411)
> at 
> org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1765)
> at 
> org.eclipse.jdt.internal.compiler.ast.QualifiedAllocationExpression.traverse(QualifiedAllocationExpression.java:693)
> at 
> org.eclipse.jdt.internal.compiler.ast.MessageSend.traverse(MessageSend.java:1167)
> at 
> org.eclipse.jdt.internal.compiler.ast.ConstructorDeclaration.traverse(ConstructorDeclaration.java:708)
> at 
> org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1831)
> at 
> org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1683)
>
> at 
> com.google.gwt.dev.jjs.impl.GwtAstBuilder.processImpl(GwtAstBuilder.java:3969)
> at 
> com.google.gwt.dev.jjs.impl.GwtAstBuilder.process(GwtAstBuilder.java:4007)
> at 
> com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater$UnitProcessorImpl.process(CompilationStateBuilder.java:128)
> at 
> com.google.gwt.dev.javac.JdtCompiler$CompilerImpl.process(JdtCompiler.java:322)
> at 
> org.eclipse.jdt.internal.compiler.Compiler.processCompiledUnits(Compiler.java:575)
> at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:475)
> at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:426)
> at com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:1020)
> at 
> com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:322)
> at 
> com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:532)
> at 
> com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:464)
> at com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:423)
> at com.google.gwt.dev.Precompile.precompile(Precompile.java:210)
> at com.google.gwt.dev.Precompile.precompile(Precompile.java:190)
> at com.google.gwt.dev.Precompile.precompile(Precompile.java:131)
> at com.google.gwt.dev.Compiler.compile(Compiler.java:192)
> at com.google.gwt.dev.Compiler.compile(Compiler.java:143)
> at com.google.gwt.dev.Compiler.compile(Compiler.java:132)
> at com.google.gwt.dev.Compiler$1.run(Compiler.java:110)
> at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:55)
> at 
> com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:50)
> at com.google.gwt.dev.Compiler.main(Compiler.java:113)
>[ERROR] at ReprocessProductForm.java(324): *(! 
> selectedOptionsList.isEmpty())*
>   org.eclipse.jdt.internal.compiler.ast.UnaryExpression
> ```
>
> while the following compiles successfully:
> ```
> public void onClick(ClickEvent event) {
> *if ( selectedOptionsList.isEmpty()) {*
> repOptfPanel.clear();
> for (String str : selectedOptionsList) {
> Label label = new Label(str);
> 
> label.getElement().getStyle().setProperty("float", "left");
> 
> label.getElement().getStyle().setProperty("margin", "3px");
> repOptfPanel.add(label);
> }
>
> 

Re: GWT compile stuck

[Alaa Humaidat]

Actually, after a few tries, I started getting compilation errors on all 
lines containing logical operators. For example, 
```
public void onClick(ClickEvent event) {
   * if ( ! selectedOptionsList.isEmpty()) {*
repOptfPanel.clear();
for (String str : selectedOptionsList) {
Label label = new Label(str);

label.getElement().getStyle().setProperty("float", "left");

label.getElement().getStyle().setProperty("margin", "3px");
repOptfPanel.add(label);
}

ReprocessOptionsDialog.this.hide();
}
}
```
doesn't compile due to the following error:
```
[ERROR] An internal compiler exception occurred
com.google.gwt.dev.jjs.InternalCompilerException: Unexpected operator for 
unary expression
at 
com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.endVisit(GwtAstBuilder.java:2377)
at 
org.eclipse.jdt.internal.compiler.ast.UnaryExpression.traverse(UnaryExpression.java:353)
at 
org.eclipse.jdt.internal.compiler.ast.IfStatement.traverse(IfStatement.java:329)
at 
org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:411)
at 
org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1765)
at 
org.eclipse.jdt.internal.compiler.ast.QualifiedAllocationExpression.traverse(QualifiedAllocationExpression.java:693)
at 
org.eclipse.jdt.internal.compiler.ast.MessageSend.traverse(MessageSend.java:1167)
at 
org.eclipse.jdt.internal.compiler.ast.ConstructorDeclaration.traverse(ConstructorDeclaration.java:708)
at 
org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1831)
at 
org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1683)
at 
com.google.gwt.dev.jjs.impl.GwtAstBuilder.processImpl(GwtAstBuilder.java:3969)
at 
com.google.gwt.dev.jjs.impl.GwtAstBuilder.process(GwtAstBuilder.java:4007)
at 
com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater$UnitProcessorImpl.process(CompilationStateBuilder.java:128)
at 
com.google.gwt.dev.javac.JdtCompiler$CompilerImpl.process(JdtCompiler.java:322)
at 
org.eclipse.jdt.internal.compiler.Compiler.processCompiledUnits(Compiler.java:575)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:475)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:426)
at com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:1020)
at 
com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:322)
at 
com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:532)
at 
com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:464)
at com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:423)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:210)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:190)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:131)
at com.google.gwt.dev.Compiler.compile(Compiler.java:192)
at com.google.gwt.dev.Compiler.compile(Compiler.java:143)
at com.google.gwt.dev.Compiler.compile(Compiler.java:132)
at com.google.gwt.dev.Compiler$1.run(Compiler.java:110)
at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:55)
at 
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:50)
at com.google.gwt.dev.Compiler.main(Compiler.java:113)
   [ERROR] at ReprocessProductForm.java(324): *(! 
selectedOptionsList.isEmpty())*
  org.eclipse.jdt.internal.compiler.ast.UnaryExpression
```

while the following compiles successfully:
```
public void onClick(ClickEvent event) {
*if ( selectedOptionsList.isEmpty()) {*
repOptfPanel.clear();
for (String str : selectedOptionsList) {
Label label = new Label(str);

label.getElement().getStyle().setProperty("float", "left");

label.getElement().getStyle().setProperty("margin", "3px");
repOptfPanel.add(label);
}

ReprocessOptionsDialog.this.hide();
}
}
```

The code above used to work fine when compiled using Java 8, GWT 2.10.
On Friday, February 24, 2023 at 3:02:24 PM UTC+3 Alaa Humaidat wrote:

> Thank you, upgrading to java 11.0.18 fixed the issue, however, I got the 
> following compilation error:
> ```
> [ERROR] An internal compiler exception occurred
> com.google.gwt.dev.jjs.InternalCompilerException: Unexpected operator for 
> EqualExpression
> at 
> com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.endVisit(GwtAstBuilder.java:762)
> at 
> 

Re: GWT compile stuck

[Alaa Humaidat]

Thank you, upgrading to java 11.0.18 fixed the issue, however, I got the 
following compilation error:
```
[ERROR] An internal compiler exception occurred
com.google.gwt.dev.jjs.InternalCompilerException: Unexpected operator for 
EqualExpression
at 
com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.endVisit(GwtAstBuilder.java:762)
at 
org.eclipse.jdt.internal.compiler.ast.EqualExpression.traverse(EqualExpression.java:995)
at 
org.eclipse.jdt.internal.compiler.ast.IfStatement.traverse(IfStatement.java:329)
at 
org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:437)
at 
org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1699)
at 
com.google.gwt.dev.jjs.impl.GwtAstBuilder.processImpl(GwtAstBuilder.java:3969)
at 
com.google.gwt.dev.jjs.impl.GwtAstBuilder.process(GwtAstBuilder.java:4007)
at 
com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater$UnitProcessorImpl.process(CompilationStateBuilder.java:128)
at 
com.google.gwt.dev.javac.JdtCompiler$CompilerImpl.process(JdtCompiler.java:322)
at 
org.eclipse.jdt.internal.compiler.Compiler.processCompiledUnits(Compiler.java:575)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:475)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:426)
at com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:1020)
at 
com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:322)
at 
com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:532)
at 
com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:464)
at com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:423)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:210)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:190)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:131)
at com.google.gwt.dev.Compiler.compile(Compiler.java:192)
at com.google.gwt.dev.Compiler.compile(Compiler.java:143)
at com.google.gwt.dev.Compiler.compile(Compiler.java:132)
at com.google.gwt.dev.Compiler$1.run(Compiler.java:110)
at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:55)
at 
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:50)
at com.google.gwt.dev.Compiler.main(Compiler.java:113)
   [ERROR] at Map.java(82): (value != null)
  org.eclipse.jdt.internal.compiler.ast.EqualExpression

```

On Friday, February 24, 2023 at 12:58:21 PM UTC+3 Thomas Broyer wrote:

> This looks like a deadlock in JDK classes themselves. Did you try updating 
> your JDK to the latest version? (11.0.18 AFAICT; 11.0.5 is more than 3 
> years old already)
>
> On Thursday, February 23, 2023 at 3:14:03 PM UTC+1 alaahu...@gmail.com 
> wrote:
>
>> I'm working on upgrading an  app that uses GWT and embedded jetty server 
>> from java 8 to java 11. The app was working fine with jetty 9, GWT 2.10.0 
>> before the upgrade. After upgrading to java 11- Jetty 11, the compilation 
>> for GWT got stuck.
>>
>> I removed all unused dependencies, upgraded existing ones to their latest 
>> version (compatible with Java11), tried to increase Xmx and Xss for the 
>> compilation target, and tried to add workers, but nothing worked.
>>
>> I used `jstack` to check the processes threads, which showed a deadlock 
>> (result attached).
>>
>> Below is the ant target I'm using to build GWT:
>>
>> ```
>> > depends="compile">
>> >   classname="com.google.gwt.dev.Compiler"
>>   fork="true"
>>   output="build.log">
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> ```
>>
>> How can I fix that?
>>
>

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Re: GWT compile stuck

[Thomas Broyer]

This looks like a deadlock in JDK classes themselves. Did you try updating 
your JDK to the latest version? (11.0.18 AFAICT; 11.0.5 is more than 3 
years old already)

On Thursday, February 23, 2023 at 3:14:03 PM UTC+1 alaahu...@gmail.com 
wrote:

> I'm working on upgrading an  app that uses GWT and embedded jetty server 
> from java 8 to java 11. The app was working fine with jetty 9, GWT 2.10.0 
> before the upgrade. After upgrading to java 11- Jetty 11, the compilation 
> for GWT got stuck.
>
> I removed all unused dependencies, upgraded existing ones to their latest 
> version (compatible with Java11), tried to increase Xmx and Xss for the 
> compilation target, and tried to add workers, but nothing worked.
>
> I used `jstack` to check the processes threads, which showed a deadlock 
> (result attached).
>
> Below is the ant target I'm using to build GWT:
>
> ```
>  depends="compile">
>classname="com.google.gwt.dev.Compiler"
>   fork="true"
>   output="build.log">
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> ```
>
> How can I fix that?
>

-- 
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Re: GWT compile stuck

[Alaa Humaidat]

Changing localWorkers to 1 didn't fix the issue (tried increasing them 
gradually as well). *build.log* doesn't show anything:
```
Public resources found in...
Translatable source found in...
Persistent unit cache dir set to: /home/ahumaidat/sourcegit/ds/gwt-unitCache
Opening cache file: 
/home/ahumaidat/sourcegit/ds/gwt-unitCache/gwt-unitCache-7b9fbb59f8661539c34f46974ce5fb573aac79fc-C90BB3B791D3293DB8D5BA1AB0A974D4-018681BB19A8
Looking for previously cached Compilation Units in 
/home/ahumaidat/sourcegit/ds/gwt-unitCache
Loaded 0 units from cache file: 
gwt-unitCache-7b9fbb59f8661539c34f46974ce5fb573aac79fc-C90BB3B791D3293DB8D5BA1AB0A974D4-01867EC1D3D6
Loaded 0 units from cache file: 
gwt-unitCache-7b9fbb59f8661539c34f46974ce5fb573aac79fc-C90BB3B791D3293DB8D5BA1AB0A974D4-01867EC29ADF
Loaded 0 units from cache file: 
gwt-unitCache-7b9fbb59f8661539c34f46974ce5fb573aac79fc-C90BB3B791D3293DB8D5BA1AB0A974D4-01867ECC816B
Loaded 0 units from cache file: 
gwt-unitCache-7b9fbb59f8661539c34f46974ce5fb573aac79fc-C90BB3B791D3293DB8D5BA1AB0A974D4-01867ED36467
Compiling module com.automation.core.ds
```

On Friday, February 24, 2023 at 5:45:34 AM UTC+3 Jonathan Baxter wrote:

> Try changing localWorkers to 1?
>
> On Thursday, February 23, 2023 at 9:14:03 AM UTC-5 Alaa Humaidat wrote:
>
>> I'm working on upgrading an  app that uses GWT and embedded jetty server 
>> from java 8 to java 11. The app was working fine with jetty 9, GWT 2.10.0 
>> before the upgrade. After upgrading to java 11- Jetty 11, the compilation 
>> for GWT got stuck.
>>
>> I removed all unused dependencies, upgraded existing ones to their latest 
>> version (compatible with Java11), tried to increase Xmx and Xss for the 
>> compilation target, and tried to add workers, but nothing worked.
>>
>> I used `jstack` to check the processes threads, which showed a deadlock 
>> (result attached).
>>
>> Below is the ant target I'm using to build GWT:
>>
>> ```
>> > depends="compile">
>> >   classname="com.google.gwt.dev.Compiler"
>>   fork="true"
>>   output="build.log">
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> ```
>>
>> How can I fix that?
>>
>

-- 
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Re: GWT compile stuck

[Jonathan Baxter]

Try changing localWorkers to 1?

On Thursday, February 23, 2023 at 9:14:03 AM UTC-5 Alaa Humaidat wrote:

> I'm working on upgrading an  app that uses GWT and embedded jetty server 
> from java 8 to java 11. The app was working fine with jetty 9, GWT 2.10.0 
> before the upgrade. After upgrading to java 11- Jetty 11, the compilation 
> for GWT got stuck.
>
> I removed all unused dependencies, upgraded existing ones to their latest 
> version (compatible with Java11), tried to increase Xmx and Xss for the 
> compilation target, and tried to add workers, but nothing worked.
>
> I used `jstack` to check the processes threads, which showed a deadlock 
> (result attached).
>
> Below is the ant target I'm using to build GWT:
>
> ```
>  depends="compile">
>classname="com.google.gwt.dev.Compiler"
>   fork="true"
>   output="build.log">
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> ```
>
> How can I fix that?
>

-- 
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