Thanks Andrei,
pushed the sample on githib:

https://github.com/abmancini/testcase-sourcemap

mvn:run should give you the error

if you comment

        <*dependency*>

            <*groupId*>com.google.gwt</*groupId*>

            <*artifactId*>gwt-dev</*artifactId*>

            <*version*>${gwt.version}</*version*>

            <*scope*>provided</*scope*>

        </*dependency*>

in the pom file the problem disappear.


Thanks,

A.





On Fri, Aug 19, 2016 at 1:04 PM Andrei Korzhevskii <a.korzhevs...@gmail.com>
wrote:

> It's hard to see what the problem actually is. I see you've created a test
> project, can you share it? That would help to reproduce and track the error.
>
>
> On Friday, August 19, 2016 at 1:06:56 PM UTC+3, Alberto Mancini wrote:
>>
>> Hello,
>> we have still the same problem with SourceMaps.
>> A teammate tracked down the problem and we found that the error appears if we
>> depend on  gwt-dev (rc1 or rc2) and errai.
>>
>> ---------------
>>  Job com.testcase.sourcemap.App_1_0
>> [INFO]       Linking into
>> /var/folders/n8/8w8npfys46x90q0y9lqdxb0h0000gn/T/gwt-codeserver-4222675233479416644.tmp/com.testcase.sourcemap.App/compile-2/war/app;
>> Writing extras to
>> /var/folders/n8/8w8npfys46x90q0y9lqdxb0h0000gn/T/gwt-codeserver-4222675233479416644.tmp/com.testcase.sourcemap.App/compile-2/extras/app
>> [INFO]          [WARN] Can't write source map
>> D84F40D38A264502877474A1394B6135_sourceMap0.json
>> [INFO] java.lang.NullPointerException
>> [INFO] at
>> com.google.gwt.thirdparty.debugging.sourcemap.SourceMapConsumerV3.parse(SourceMapConsumerV3.java:101)
>> ....
>> ----------------
>>
>> Am I missing something trivial ?
>> Should i file a bug on gwt-2.8.0-rc2  or errai beta2?
>>
>> Follows the sample  pom.
>>
>> Thanks,
>>    Alberto.
>>
>> ----
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <project xmlns="http://maven.apache.org/POM/4.0.0";
>>          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
>>          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
>> http://maven.apache.org/xsd/maven-4.0.0.xsd";>
>>     <modelVersion>4.0.0</modelVersion>
>>
>>     <groupId>com.testcase</groupId>
>>     <artifactId>sourcemap</artifactId>
>>     <version>1.0-SNAPSHOT</version>
>>     <packaging>war</packaging>
>>
>>     <properties>
>>         <errai.version>4.0.0.Beta2</errai.version>
>>         <gwt.version>2.8.0-rc2</gwt.version>
>>     </properties>
>>
>>     <repositories>
>>         <repository>
>>             <id>jboss</id>
>>             <name>JBoss Public Repo</name>
>>             
>> <url>https://repository.jboss.org/nexus/content/groups/public</url>
>>         </repository>
>>     </repositories>
>>
>>
>>
>>     <dependencies>
>>         <!-- GWT -->
>>         <dependency>
>>             <groupId>com.google.gwt</groupId>
>>             <artifactId>gwt-user</artifactId>
>>             <version>${gwt.version}</version>
>>             <scope>provided</scope>
>>         </dependency>
>>         <!-- it works if commented -->
>>         <dependency>
>>             <groupId>com.google.gwt</groupId>
>>             <artifactId>gwt-dev</artifactId>
>>             <version>${gwt.version}</version>
>>             <scope>provided</scope>
>>         </dependency>
>>         <!-- -->
>>     </dependencies>
>>
>>
>>     <build>
>>         <finalName>${project.artifactId}</finalName>
>>         <resources>
>>             <resource>
>>                 <directory>src/main/java</directory>
>>             </resource>
>>         </resources>
>>
>>         <plugins>
>>             <plugin>
>>                 <artifactId>maven-compiler-plugin</artifactId>
>>                 <version>3.5.1</version>
>>                 <configuration>
>>                     <source>1.8</source>
>>                     <target>1.8</target>
>>                 </configuration>
>>             </plugin>
>>             <plugin>
>>                 <artifactId>maven-clean-plugin</artifactId>
>>                 <version>2.4.1</version>
>>                 <configuration>
>>                     <filesets>
>>                         <fileset>
>>                             <directory>${basedir}</directory>
>>                             <includes>
>>                                 <include>src/gen/</include>
>>                                 <include>src/main/webapp/app/</include>
>>                                 
>> <include>src/main/webapp/WEB-INF/deploy/</include>
>>                                 
>> <include>src/main/webapp/WEB-INF/lib/</include>
>>                                 
>> <include>src/main/webapp/WEB-INF/classes/**/*.*</include>
>>                                 
>> <include>src/main/webapp/WEB-INF/classes/**/*</include>
>>                                 
>> <include>src/main/webapp/WEB-INF/classes</include>
>>                                 <include>**/gwt-unitCache/**</include>
>>                                 <include>.errai/</include>
>>                             </includes>
>>                         </fileset>
>>                     </filesets>
>>                 </configuration>
>>             </plugin>
>>             <plugin>
>>                 <artifactId>maven-war-plugin</artifactId>
>>                 <version>2.6</version>
>>             </plugin>
>>             <plugin>
>>                 <groupId>org.codehaus.mojo</groupId>
>>                 <artifactId>gwt-maven-plugin</artifactId>
>>                 <version>2.8.0-rc1</version>
>>                 <executions>
>>                     <execution>
>>                         <goals>
>>                             <goal>compile</goal>
>>                         </goals>
>>                     </execution>
>>                 </executions>
>>                 <configuration>
>>                     <bindAddress>0.0.0.0</bindAddress>
>>                     <logLevel>WARN</logLevel>
>>                     <strict>true</strict>
>>                     <noServer>false</noServer>
>>                     <generateDirectory>src/gen/java</generateDirectory>
>>                     <gen>src/gen/java</gen>
>>                     
>> <webappDirectory>${project.basedir}/src/main/webapp</webappDirectory>
>>                     
>> <hostedWebapp>${project.basedir}/src/main/webapp</hostedWebapp>              
>>       <runTarget>/</runTarget>
>>                     <extraJvmArgs>-Xmx2048m 
>> -XX:CompileThreshold=700</extraJvmArgs>
>>                     <strict>true</strict>
>>                 </configuration>
>>                 <dependencies>
>>                     <dependency>
>>                         <groupId>com.google.gwt</groupId>
>>                         <artifactId>gwt-user</artifactId>
>>                         <version>${gwt.version}</version>
>>                     </dependency>
>>                     <dependency>
>>                         <groupId>com.google.gwt</groupId>
>>                         <artifactId>gwt-dev</artifactId>
>>                         <version>${gwt.version}</version>
>>                         <scope>compile</scope>
>>                     </dependency>
>>                 </dependencies>
>>             </plugin>
>>         </plugins>
>>     </build>
>>
>>     <profiles>
>>         <profile>
>>             <id>errai</id>
>>             <activation>
>>                 <activeByDefault>true</activeByDefault>
>>             </activation>
>>             <dependencyManagement>
>>                 <dependencies>
>>                     <dependency>
>>                         <groupId>org.jboss.errai.bom</groupId>
>>                         <artifactId>errai-bom</artifactId>
>>                         <version>${errai.version}</version>
>>                         <type>pom</type>
>>                         <scope>import</scope>
>>                     </dependency>
>>                 </dependencies>
>>             </dependencyManagement>
>>             <dependencies>
>>                 <!--errai-->
>>                 <!--<dependency>-->
>>                     <!--<groupId>org.jboss.errai</groupId>-->
>>                     <!--<artifactId>errai-navigation</artifactId>-->
>>                     <!--<version>${errai.version}</version>-->
>>                     <!--<scope>provided</scope>-->
>>                 <!--</dependency>-->
>>                 <!--
>>                 <dependency>
>>                     <groupId>org.jboss.errai</groupId>
>>                     <artifactId>errai-ioc</artifactId>
>>                     <version>${errai.version}</version>
>>                     <scope>provided</scope>
>>                 </dependency>
>>                 <dependency>
>>                     <groupId>org.jboss.errai</groupId>
>>                     <artifactId>errai-ui</artifactId>
>>                     <version>${errai.version}</version>
>>                     <scope>provided</scope>
>>                 </dependency>
>>                 <dependency>
>>                     <groupId>org.jboss.errai</groupId>
>>                     <artifactId>errai-data-binding</artifactId>
>>                     <version>${errai.version}</version>
>>                     <scope>provided</scope>
>>                 </dependency>
>>                 <dependency>
>>                     <groupId>org.jboss.errai</groupId>
>>                     <artifactId>errai-cdi-client</artifactId>
>>                     <version>${errai.version}</version>
>>                     <scope>provided</scope>
>>                 </dependency>
>>                 <dependency>
>>                     <groupId>org.jboss.errai</groupId>
>>                     <artifactId>errai-bus</artifactId>
>>                     <version>${errai.version}</version>
>>                     <scope>provided</scope>
>>                 </dependency>
>>                 -->
>>             </dependencies>
>>         </profile>
>>     </profiles>
>>
>>
>> </project>
>>
>> --
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