jlink 14.0.1 with 100 modules fail

[Christian Stein]

On Sun, May 31, 2020 at 8:52 AM Alan Bateman <Alan.Bateman at oracle.com>
wrote:

>
>
> On 30/05/2020 17:40, Christian Stein wrote:
> > Hi,
> >
> > the modular [bach-demo-99] I generated to check my build tool
> > against, failed to create a custom runtime image using jlink
> > via itsToolProvider-based service entry-point.
> >
> > The project consists of 100 module descriptors. No other Java
> > source files (for classes and interfaces) are part of that demo.
> > Each descriptor ball${i}n declares a "requires ball${j}n;" with j
> > set to a number from 0 to i-1 ... in words, all lower modules.
> >
> > javac compiles this project with problems.
> >
> > Arguments passed to jlink (as an array of string) reads:
> >
> > jlink
> >    --add-modules ball27n,ball43n,ball88n,[...],ball77n,ball93n
> >    --module-path .bach\workspace\modules
> >    --output .bach\workspace\image
> >    --compress 2
> >    --no-header-files
> >    --no-man-pages
> >
> > The error message reads:
> >
> > jdk.internal.org.objectweb.asm.MethodTooLargeException: Method too large:
> > jdk/internal/module/SystemModules$all.moduleDescriptors
> > ()[Ljava/lang/module/ModuleDescriptor;
> >
> > Is there a limitation of supported modules that can be linked?
> > Is the module graph of this conceived project too far out of scope?
> >
> > Shall I open an issue at JBS?
> >
> Yeah, this is an issue with the jlink system modules plugin where it
> needs to split the initialization when it results in a method size more
> than 64k. It it tracked by JDK-8240567. Can you add `--disable-plugin
> system-modules` to the jlink command as workaround until this is fixed?
>

Thanks for the heads-up, Alan.
Didn't find the issue you linked by a brief search.

Working workarounds:
- add `--disable-plugin system-modules` works with 100 modules.
- use only 90 modules instead of 100 modules as described above.

Cheers,
Christian