[Lazarus] startlazarus crash in Ubuntu 14:04

[zeljko at holobit.net]

On 2014-04-23 13:49, Flávio Etrusco wrote:
> On Wed, Apr 23, 2014 at 12:56 PM, zeljko <zeljko at holobit.net> wrote:
> 
>> On 04/23/2014 10:14 AM, FreeMan wrote:
>> His problem is with 32 bit. I guess it's because of libpixman which
>> crashes if it isn't compiled with -mstackrealign.We, lazarus
>> developers cannot do anything about this problem.
>> Is this mean problem on just Ubuntu 14.04 - 32 bits gtk 2 ?
> 
>  That means: any 32bit gtk2 application created by fpc compiler will
> crash on any distro which realigns stack (eg sse2/sse3) inside
> library.
>  Currently libpixman.so is critical (but tomorrow any C lib can be
> critical), so such lib should be rebuilt with -mstackrealign passed to
> gcc or fpc devels should make some magic to avoid such problem.Maybe
> it will be good to open issue at fpc bugtracker about this.
> 
>> second question if any application created other platform and
>> crosscompiled to linux 32bit, and this application has crash on
>> Ubuntu
>> 14.04 - 32 bits gtk 2
> 
>  Yes if we have above scenario. If you rebuild libpixman by yourself
> (with -mstackrealign passed to gcc) then it won't crash.
> 
>  There is already story about that problem:
>  http://bugs.freepascal.org/view.php?id=15582 [1]
> 
>  zeljko
> 
> Do you think it's useful to vote "affects me" in
> https://bugs.launchpad.net/ubuntu/+source/pixman/+bug/1297845 [2] ?

Maybe. I don't use Ubuntu so don't know exactly how many votes can 
trigger packager to take a look into problem. Someone should write there 
that libpixman compiled with -mstackrealign fixes problem.

zeljko