Re: GTK applications crash on start

[Ludovic Courtès]

Alex ter Weele <address@hidden> skribis:

> Alex ter Weele <address@hidden> writes:
>
>>
>>     $ echo $LD_LIBRARY_PATH
>>
>>     $ echo $LD_PRELOAD
>>     
>> /gnu/store/hfz0z0fs14jgl0kzk5hid2msr83lxii1-spectrwm-3.1.0/lib/libswmhack.so.0.0
>>
>> That's weird, looks like my WM set LD_PRELOAD. I wouldn't have expected
>> that. And sure enough, with LD_PRELOAD unset:
>>
>>     $ LD_PRELOAD= emacs -Q --eval "(kill-emacs)"
>>     ...(GTK warnings omitted)
>>     $ echo $?
>>     0

Bingo!

>> So why and how does spectrwm set LD_PRELOAD? I can't figure this out.
>
> OK, I figured it out:
> https://github.com/conformal/spectrwm/blob/SPECTRWM_3_1_0/spectrwm.c#L3764. 
> Looks
> like it injects libswmhack.so so that it can intercept X events,
> e.g. 
> https://github.com/conformal/spectrwm/blob/SPECTRWM_3_1_0/lib/swm_hack.c#L137

Well, the library name says it all.  :-)

Thanks,
Ludo’.