[mkgmap-dev] Exception introduced in r1725

Thu Apr 7 19:06:16 BST 2011

Hi All,

I realised I was having problems with the newest stable and not with
an older version, so I went back through and did some bisecting. r1725
appears to cause issues for me when generating large gmapsupp.img
files (1.1G, from 293 .img tiles), where it throws

Exception in thread "main" java.lang.IllegalArgumentException
	at java.nio.ByteBuffer.allocate(ByteBuffer.java:328)
	at uk.me.parabola.imgfmt.sys.Directory.sync(Directory.java:176)
	at uk.me.parabola.imgfmt.sys.ImgFS.sync(ImgFS.java:230)
	at uk.me.parabola.imgfmt.sys.ImgFS.close(ImgFS.java:240)
	at uk.me.parabola.mkgmap.combiners.GmapsuppBuilder.onFinish(GmapsuppBuilder.java:119)
	at uk.me.parabola.mkgmap.main.Main.endOptions(Main.java:413)
	at uk.me.parabola.mkgmap.CommandArgsReader.readArgs(CommandArgsReader.java:126)
	at uk.me.parabola.mkgmap.main.Main.main(Main.java:127)

r1724 and earlier works fine. Any thoughts?

I've seen earlier threads with the same error, but hopefully narrowing
it down to the specific commit helps. I've also tested my r1724 image
on my eTrex and everything works fine, so the suggestion in one of the
earlier threads that the file format only supports 256 sub-images
isn't watertight.

Cheers,
Andy