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
> 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$1.run(Compiler.java:110)
> at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:55)
> at
> com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:50)
> at com.google.gwt.dev.Compiler.main(Compiler.java:113)
> [ERROR] at Map.java(82): (value != null)
> org.eclipse.jdt.internal.compiler.ast.EqualExpression
>
> ```
>
> On Friday, February 24, 2023 at 12:58:21 PM UTC+3 Thomas Broyer wrote:
>
>> This looks like a deadlock in JDK classes themselves. Did you try
>> updating your JDK to the latest version? (11.0.18 AFAICT; 11.0.5 is more
>> than 3 years old already)
>>
>> On Thursday, February 23, 2023 at 3:14:03 PM UTC+1 [email protected]
>> wrote:
>>
>>> I'm working on upgrading an app that uses GWT and embedded jetty server
>>> from java 8 to java 11. The app was working fine with jetty 9, GWT 2.10.0
>>> before the upgrade. After upgrading to java 11- Jetty 11, the compilation
>>> for GWT got stuck.
>>>
>>> I removed all unused dependencies, upgraded existing ones to their
>>> latest version (compatible with Java11), tried to increase Xmx and Xss for
>>> the compilation target, and tried to add workers, but nothing worked.
>>>
>>> I used `jstack` to check the processes threads, which showed a deadlock
>>> (result attached).
>>>
>>> Below is the ant target I'm using to build GWT:
>>>
>>> ```
>>> <target name="compile.gwt" description="build applications"
>>> depends="compile">
>>> <java jvm="${home}/apps64/java11/bin/java" failonerror="true"
>>> classname="com.google.gwt.dev.Compiler"
>>> fork="true"
>>> output="build.log">
>>> <classpath>
>>> <path refid="local.class.path"/>
>>> </classpath>
>>> <jvmarg line="-Xmx1024M"/>
>>> <jvmarg line="-Xss16M"/>
>>> <arg value="-style"/>
>>> <arg value="DETAILED"/>
>>> <arg value="-localWorkers"/>
>>> <arg value="16"/>
>>> <arg value="-logLevel"/>
>>> <arg value="DEBUG"/>
>>> <arg value="-optimize"/>
>>> <arg value="5"/>
>>> <arg value="com.automation.core.ds"/>
>>> </java>
>>> </target>
>>> ```
>>>
>>> How can I fix that?
>>>
>>
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