[mkgmap-dev] [mkgmap-svn] Commit r4811: fix java.lang.AssertionError while building index from unicode tiles

Sat Nov 6 14:29:52 GMT 2021

Hi Gerd

I just hate the idea it is obviously wrong and trivially to make
correct. It is unlikely it will ever fail. While it is in this
inconsistent state it inhibits any addressing of the more complicated
issue about how to tackle the case-differences in city names and what
MdrCheck is reporting.

Ticker

On Sat, 2021-11-06 at 14:10 +0000, Gerd Petermann wrote:
> Hi Ticker,
> 
> ok, so let's wait for that crash to get an example. I really have no
> idea how to force it :(
> According to MdrCheck the index is full of errors for the two tiles
> in China, but maybe it's MdrCheck which is wrong.
> 
> Gerd
> 
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag
> von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
> Gesendet: Samstag, 6. November 2021 12:27
> An: mkgmap-dev at lists.mkgmap.org.uk
> Betreff: Re: [mkgmap-dev] [mkgmap-svn] Commit r4811: fix
> java.lang.AssertionError while building index from unicode tiles
> 
> Hi Gerd
> 
> The crash in Carlos's original problem is due to the inconsistency in
> the dedups between Mdr5/Mdr25.
> 
> This could be triggered with any --code-page where city names contain
> characters that exist in this character-set but are not given sort
> positions.
> 
> My mistake with mdrUnicode_v1/2.patch was trying to tackle the case
> problem at the same time. This is going to be much more difficult.
> 
> Ticker
> 
> 
> On Fri, 2021-11-05 at 11:00 +0000, Gerd Petermann wrote:
> > Hi Ticker,
> > 
> > sorry for my reluctance. I simply have no test case that shows an
> > error (search for xyz not working). If you have one please share it
> > so that I can understand the importance of the patch.
> > 
> > I would also be happy if you could create a new branch to test
> > further changes reg. --lower-case.
> > According to MdrCheck we also produce wrong data for mdr 27 (cities
> > are not de-duped).
> > Found this also with Arndts *.img data but did not yet try to find
> > out if MdrCheck is right.
> > 
> > Gerd
> > 
> > ________________________________________
> > Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag
> > von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
> > Gesendet: Freitag, 5. November 2021 11:34
> > An: mkgmap-dev at lists.mkgmap.org.uk; mkgmap-svn at lists.mkgmap.org.uk
> > Betreff: Re: [mkgmap-dev] [mkgmap-svn] Commit r4811: fix
> > java.lang.AssertionError while building index from unicode tiles
> > 
> > Hi Gerd
> > 
> > I really don't like the idea of the consistent dedup part of this
> > patch
> > not being applied (Mdr5 & Mdr25).
> > The Mdr7 changes are a slight refactor and a useful comment, but
> > has
> > no
> > logical effect.
> > The Mdr29 changes are an assert to detect inconsistency in Mdr5/25
> > index pointer lengths before these could cause a crash +
> > .equal()/collator.compare() change that could be removed
> > 
> > Ticker
> > 
> > On Fri, 2021-11-05 at 09:02 +0000, svn commit wrote:
> > > Version mkgmap-r4811 was committed by gerd on Fri, 05 Nov 2021
> > > 
> > > fix java.lang.AssertionError while building index from unicode
> > > tiles
> > > Changes extracted from mdrUnicode_v8.patch by Ticker Berkin
> > > 
> > > http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4811
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> > 
> > 
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