I tracked down why Leafpad is crashing when glib is changed.

I found that last working glib is 2.23.0 and first broken (in meaning of 'broken') version is 2.23.1. Then I git bisected and found that first breaking commit is 718b476c4474e5c9e973046ef555ffcb9bfd38a1 Which is then pointing to the bug tracker: https://bugzilla.gnome.org/show_bug.cgi?id=585375

Current leafpad in maemo is leafpad-0.8.17le (le stands for lite edition). Because unmodified upstream leafpad-0.8.17 (and latest 0.8.18.1) works with new glib (2.23.1 and even 2.26.0), I would say that issue comes from these lite edition patches.

Next steps: newest glib (2.35.X). leafpad without 'le'. (optional) create lite edition against newest leafpad+glib.

Here are debianizations I have used: http://cc.oulu.fi/~rantalai/maemo5/libglib/ Version numbers (of course) refers to these upstream tar-balls: http://ftp.acc.umu.se/pub/gnome/sources/glib/