GWT compiler fails when -saveSource is used

[timeu]

When the GWT compiler is run with the -saveSource parameter, it fails with following error:

[ERROR] Fatal error emitting artifact: src/gen/com/gmi/nordborglab/browser/shared/proxy/CandidateGeneListEnrichmentPageProxyAutoBean_com_google_web_bindery_requestfactory_shared_impl_EntityProxyCategory_com_google_web_bindery_requestfactory_shared_impl_ValueProxyCategory_com_google_web_bindery_requestfactory_shared_impl_BaseProxyCategory.java
[INFO] java.io.FileNotFoundException: /home/GMI/uemit.seren/mnt/user/uemit.seren/Code/GWAPortal/genophenbrowser/genophenbrowser-client/target/extra/browser/src/gen/com/gmi/nordborglab/browser/shared/proxy/CandidateGeneListEnrichmentPageProxyAutoBean_com_google_web_bindery_requestfactory_shared_impl_EntityProxyCategory_com_google_web_bindery_requestfactory_shared_impl_ValueProxyCategory_com_google_web_bindery_requestfactory_shared_impl_BaseProxyCategory.java (File name too long)

It seems to be the same underlying issue as in #6014 which was fixed in 2.4

The workaround is to store the sources in a .war,.zip or .jar file:

-saveSourceOutput sources.war

[timeu]

The exception is thrown in the copyGeneratedFile function:

gwt/dev/core/src/com/google/gwt/dev/SourceSaver.java

Line 234 in c9c3225

throw new UnableToCompleteException();

Maybe one should just log a message and not throw an Exception similar to what is done in issue #6014.
If needed I can create a pull request

[tbroyer]

If needed I can create a pull request

Assuming you mean a change in Gerrit here ;-) then yes please go ahead.

[timeu]

https://gwt-review.googlesource.com/#/c/14190/