Since i use gentoo i downgraded x11-libs/gdk-pixbuf from 2.28.2 to 2.28.1 (didnt make more downgrade cause of dependencies) with excact same behavior. I say exact because this time i checked dmesg that gave, in both cases,
rolauncher[29654]: segfault at 40 ip 00007fa31c177d98 sp 00007fff9a9350c0 error 4 in libc-2.17.so[7fa31c074000+1a2000]
So maybe it's a C version promblem. May it works on my stable gentoo cause there should be sys-libs/glibc-2.15-r3 and i use here with gentoo testing the sys-libs/glibc-2.17
nevertheless i tried to debug harder and got these fatals on my debug.log
./rolauncher: error: symbol lookup error: undefined symbol: gtk_widget_device_is_shadowed (fatal)
/usr/lib64/gtk-2.0/2.10.0/engines/libpixmap.so: error: symbol lookup error: undefined symbol: g_module_unload (fatal)
4058: /usr/lib64/gtk-2.0/2.10.0/engines/libadwaita.so: error: symbol lookup error: undefined symbol: g_module_check_init (fatal)
4058: /usr/lib64/gtk-2.0/2.10.0/engines/libadwaita.so: error: symbol lookup error: undefined symbol: g_module_unload (fatal)
4058: /usr/lib64/gtk-2.0/modules/libcanberra-gtk-module.so: error: symbol lookup error: undefined symbol: g_module_unload (fatal)
4058: /usr/lib64/gtk-2.0/modules/libcanberra-gtk-module.so: error: symbol lookup error: undefined symbol: gtk_widget_device_is_shadowed (fatal)
4058: /usr/lib64/gtk-2.0/modules/libcanberra-gtk-module.so: error: symbol lookup error: undefined symbol: gtk_module_display_init (fatal)
/usr/lib64/gtk-2.0/2.10.0/immodules/im-ibus.so: error: symbol lookup error: undefined symbol: g_module_unload (fatal)
/usr/lib64/gio/modules/libgiognomeproxy.so: error: symbol lookup error: undefined symbol: g_module_check_init (fatal)
4058: /usr/lib64/gio/modules/libgiognomeproxy.so: error: symbol lookup error: undefined symbol: g_module_unload (fatal)
/usr/lib64/gio/modules/libdconfsettings.so: error: symbol lookup error: undefined symbol: g_module_check_init (fatal)
4058: /usr/lib64/gio/modules/libdconfsettings.so: error: symbol lookup error: undefined symbol: g_module_unload (fatal)
/usr/lib64/gio/modules/libgiognutls.so: error: symbol lookup error: undefined symbol: g_module_check_init (fatal)
4058: /usr/lib64/gio/modules/libgiognutls.so: error: symbol lookup error: undefined symbol: g_module_unload (fatal)
/usr/lib64/gio/modules/libgioremote-volume-monitor.so: error: symbol lookup error: undefined symbol: g_module_check_init (fatal)
4058: /usr/lib64/gio/modules/libgioremote-volume-monitor.so: error: symbol lookup error: undefined symbol: g_module_unload (fatal)
/usr/lib64/gio/modules/libgsettingsgconfbackend.so: error: symbol lookup error: undefined symbol: g_module_check_init (fatal)
4058: /usr/lib64/gio/modules/libgsettingsgconfbackend.so: error: symbol lookup error: undefined symbol: g_module_unload (fatal)
/usr/lib64/gio/modules/libgiolibproxy.so: error: symbol lookup error: undefined symbol: g_module_check_init (fatal)
4058: /usr/lib64/gio/modules/libgiolibproxy.so: error: symbol lookup error: undefined symbol: g_module_unload (fatal)
/usr/lib64/gio/modules/libgvfsdbus.so: error: symbol lookup error: undefined symbol: g_module_check_init (fatal)
4058: /usr/lib64/gio/modules/libgvfsdbus.so: error: symbol lookup error: undefined symbol: g_module_unload (fatal)
/usr/lib64/gconv/ISO8859-7.so: error: symbol lookup error: undefined symbol: gconv_end (fatal)
/usr/lib64/pango/1.8.0/modules/pango-basic-fc.so: error: symbol lookup error: undefined symbol: g_module_check_init (fatal)
4058: /usr/lib64/pango/1.8.0/modules/pango-basic-fc.so: error: symbol lookup error: undefined symbol: g_module_unload (fatal)
/usr/lib64/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-xpm.so: error: symbol lookup error: undefined symbol: g_module_check_init (fatal)
4058: /usr/lib64/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-xpm.so: error: symbol lookup error: undefined symbol: g_module_unload (fatal)
/usr/lib64/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-png.so: error: symbol lookup error: undefined symbol: g_module_check_init (fatal)
4058: /usr/lib64/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-png.so: error: symbol lookup error: undefined symbol: g_module_unload (fatal)
I tried copy some of them from gentoo-stable desktop where rolauncher works but did not seem any progress. And i cant believe all these are indeed fatals