broken pipe

[Thomas Klausner <wiz%NetBSD.org@localhost>]

Hi!

I noticed a day ago that some GUI applications on
NetBSD-current/amd64/20240711, modular X, start randomly exiting with
'broken pipe'.

I first saw it with transmission-gtk, but then also with qbittorrent,
which has completely different GUI library dependencies.

I've started qbittorrent in gdb, the backtrace when it dies starts with

__pwrite()
pwrite() at  pthread_cancelstub.c:520
libtorrent::aux::pwrite_all at libtorren-rasterbar-2.0.10/include/libtorrent/span.hpp:126
operator() at libtorren-rasterbar-2.0.10/include/libtorrent/file.hpp:116
...

Has anyone else seen this?

transmission-gtk (direct) dependencies:
transmission-common>=4.0.5
libevent>=2.1.12nb1
libdeflate>=1.10
miniupnpc>=2.1
curl>=8.7.1nb1
libpsl>=0.21.2nb1
hicolor-icon-theme>=0.9nb1
gtkmm4>=4.12.0nb1

qtbittorrent (direct) dependencies:
qt6-qtsvg>=6.6.3nb1
qt6-qtbase>=6.6.3nb1
boost-libs-1.85.*
boost-libs>=1.85.0
hicolor-icon-theme>=0.9nb1
libtorrent-rasterbar>=2.0.9nb2

No obvious overlap.
 Thomas