Help to understand/fix Kdevelop Crash

[Milian Wolff]

Hey All!

On Tuesday 17 March 2015 13:22:05 David Nolden wrote:
> Actually, the absolute limit on the size of the item repository is 4GB,
> because the index is a 32 bit number, and there can be 1<<16 buckets, each
> of size 1<<16, i.e. 1<<32=4.3GB. Maybe this limit is hit in your case. Can
> you add some assertion which avoids "wrapping" of the bucket number
> (especially of the buckets spanned by the "monster bucket extent")?
> 
> However, that limit applies to each item repository separately. In your
> case it seems to be the persistent symbol table. IMO it should never become
> that huge, not even for the linux kernel. So I guess this is a problem in
> kdevelop-clang, which puts too much stuff in the symbol table (just a
> guess).

I think this is a very good guess. I've seen similar problems before in kdev-
clang and that should certainly be investigated. Kevin, you added some tooling 
around the item repositories recently, no? Can we see what gets added to the 
symbol table and what not?

Also, Lucas - you marked https://bugs.kde.org/show_bug.cgi?id=343950 as a 
duplicate but say here it's actually not. So should I un-mark it and keep it 
open?

Bye

> 2015-03-15 2:15 GMT+01:00 Lucas Tanure <tanure at linux.com>:
> > Hi,
> > 
> > I'm trying to use kdevelop for develop linux kernel, but it's crashing
> > while parsing.
> > I imported the main makefile from linux kernel source and after a few
> > minutes the kdevelop crashes.
> > 
> > Take a look at:
> > *kdevelop* *binaries* :
> > https://www.dropbox.com/s/g01t1uzpkkwihwt/kdevelop.tar.xz?dl=0
> > 
> > *llvm* *binaries* :
> > https://www.dropbox.com/s/j8xarqu6leufk8s/llvm.tar.xz?dl=0
> > 
> > *kdevelop* *log* : https://www.dropbox.com/s/ke4iovxx8alis9j/kdev.log?dl=0
> > 
> > *gdb* *coredump* :
> > https://www.dropbox.com/s/1q7l8pi67kug59r/core.24956.xz?dl=0
> > 
> > I created the bug:
> > https://bugs.kde.org/show_bug.cgi?id=343950
> > 
> > and I thought it was the same as:
> > https://bugs.kde.org/show_bug.cgi?id=272408 ( not enough memory ram ).
> > But it's not, it's a real crash. I tested with a 24Gbytes of Ram, and
> > kdevelop took like 5Gb to parse 50% of linux kernel.
> > 
> > Please help.
> > Thanks
> > 
> > --
> > Lucas Tanure
> > +55 (19) 988176559
> > 
> > _______________________________________________
> > KDevelop-devel mailing list
> > KDevelop-devel at kde.org
> > https://mail.kde.org/mailman/listinfo/kdevelop-devel

-- 
Milian Wolff
mail at milianw.de
http://milianw.de