[Lazarus] RE : Lazarus crashing reproducibly on startup (64-bitLinux)

[Ludo Brands]

> >> I've recently switched distros to Mint Debian 12 64-bit 
> XFCE. This is 
> >> on an AMD Phenom *4, 4 GB of RAM. When I was reinstalling stuff I 
> >> noticed that the latest version of Lazarus that they have 
> in the repo 
> >> is 0.9.28, a bit old I know, but it works for what I do.
> >>
> >> So I installed 0.9.28, which also brought in FPC 2.4.0-2.
> >>
> >> When I try to run Lazarus from the menus, I get the splash 
> screen and 
> >> then nothing, the IDE never comes up.
> >>
> >> So, I switched to a terminal, ran startlazarus and got the 
> following 
> >> output.
> >>
> >> [WARNING] Out of OEM specific VK codes, changing to unassigned 
> >> [WARNING] Out of unassigned VK codes, assigning $FF 
> >> TLazarusManager.Run starting /usr/lib/lazarus/0.9.28.2/lazarus ... 
> >> Runtime error 203 at $0000000000736A16 $0000000000736A16
> >> $0000000000720991
> >>
> >>
> >> OK, maybe it's an old version. I downloaded the latest .DEBs from 
> >> SourceForge, and installed those. No change in the symptoms (well, 
> >> OK, I can't say the addresses were exactly the same, but the bit 
> >> about the VK codes was, and it was still a runtime error 203).
> >>
> >> I cleaned out everything to do with Lazarus and FPC that I 
> could find 
> >> (using KFind to make sure I got everything) and had one 
> more try with 
> >> 0.9.28. As expected, still the same error. I know that 
> 0.9.28 used to 
> >> run on Mint 9 64-bit, but that was the Ubuntu-based 
> version, not the 
> >> Debian-based one.
> >>
> >> Anyone have any ideas how to fix this, please?
> >
> > Starting at a shell prompt, if you load Lazarus in gdb, run 
> it, wait 
> > for the crash and then use GDB's bt command to get a 
> backtrace, do the 
> > first few lines say anything useful?
> >
> 
> Probably not, but this is what was produced using V0.9.28
> 
> <paste>
> 
> run
> Starting program: /usr/bin/startlazarus
> [Thread debugging using libthread_db enabled]
> 
> Program received signal SIGSEGV, Segmentation fault. 
> 0x00000000005a2879 in ?? ()
> (gdb) bt
> #0  0x00000000005a2879 in ?? ()
> #1  0x00007fffffffe1c0 in ?? ()
> #2  0x00007ffff7de902c in ?? () from 
> /lib64/ld-linux-x86-64.so.2 #3  0x0000000000502b31 in ?? () 
> #4  0x00007ffff577dead in __libc_start_main () from 
> /lib/x86_64-linux-gnu/libc.so.6
> #5  0x0000000000000000 in ?? ()
> (gdb)
> 
> 
> </paste>
> 
> 

There was a problem with ubuntu 12 and gtk (glib2-2.31). A patch was created
and committed http://bugs.freepascal.org/view.php?id=21129 . If mint 12 is
derived from ubuntu 12 you'll probably running into this problem. Try
lazarus from svn.

Ludo