segfault in xwin-xdg-menu.exe

[Fabio Rossi <rossi dot f at inwind dot it>]

I have just made a fresh cygwin installation on windows 10 pro 32bit using setup 2.891. I have selected xorg-server, xinit, vim and gdb packages. I have modified the Xwin server configuration as described in https://x.cygwin.com/docs/faq/cygwin-x-faq.html#q-startxwinrc-exit and later I have successfully started it by using the action "cygwin-x\xwin server" under Windows programs menu. The X server is running with display :0.0 and its icon is visible in the tray bar.

On another system installed months ago I have the xdg menu application already running (it's automatically started by the xwin startup script) but I didn't need to follow the above mentioned trick described in the FAQ.

In a cygwin terminal I then try starting manually xwin-xdg-menu by using:

$ DISPLAY=:0 xwin-xdg-menu.exe

but I get a segmentation fault. With gdb I get the following backtrace:

$ DISPLAY=:0 gdb xwin-xdg-menu.exe

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Reading symbols from xwin-xdg-menu.exe...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/xwin-xdg-menu.exe
[New Thread 6888.0x1578]
[New Thread 6888.0xecc]
[New Thread 6888.0x404]
[New Thread 6888.0x1bdc]
[New Thread 6888.0x6f4]
[New Thread 6888.0xdd4]
[New Thread 6888.0x1b04]
[New Thread 6888.0xf38]

Program received signal SIGSEGV, Segmentation fault.
0x6d0af8f0 in cygfontconfig-1!FcFreeTypeQueryFace () from /usr/bin/cygfontconfig-1.dll
(gdb) bt
#0  0x6d0af8f0 in cygfontconfig-1!FcFreeTypeQueryFace () from /usr/bin/cygfontconfig-1.dll
#1  0x6d0ab98b in cygfontconfig-1!FcFileScanConfig () from /usr/bin/cygfontconfig-1.dll
#2  0x6d0abd59 in cygfontconfig-1!FcFileScanConfig () from /usr/bin/cygfontconfig-1.dll
#3  0x6d0abfb6 in cygfontconfig-1!FcDirCacheScan () from /usr/bin/cygfontconfig-1.dll
#4  0x6d0a762c in cygfontconfig-1!FcConfigAddCache () from /usr/bin/cygfontconfig-1.dll
#5  0x6d0a76d6 in cygfontconfig-1!FcConfigBuildFonts () from /usr/bin/cygfontconfig-1.dll
#6  0x6d0b0cce in cygfontconfig-1!FcInitLoadOwnConfigAndFonts () from /usr/bin/cygfontconfig-1.dll
#7  0x6d0b0cff in cygfontconfig-1!FcInitLoadConfigAndFonts () from /usr/bin/cygfontconfig-1.dll
#8  0x6d0a4845 in cygfontconfig-1!FcConfigDestroy () from /usr/bin/cygfontconfig-1.dll
#9  0x6d0a63ce in cygfontconfig-1!FcConfigSubstituteWithPat () from /usr/bin/cygfontconfig-1.dll
#10 0x6d0a6d97 in cygfontconfig-1!FcConfigSubstitute () from /usr/bin/cygfontconfig-1.dll
#11 0x6c0a5cc5 in pango_cairo_fc_font_get_type () from /usr/bin/cygpangocairo-1.0-0.dll
#12 0x6c084c87 in pango_fc_font_get_raw_extents () from /usr/bin/cygpangoft2-1.0-0.dll
#13 0x6c0cc090 in pango_color_parse () from /usr/bin/cygpango-1.0-0.dll
#14 0x6c0cd68a in pango_itemize_with_base_dir () from /usr/bin/cygpango-1.0-0.dll
#15 0x6c0d5c89 in pango_layout_line_get_extents () from /usr/bin/cygpango-1.0-0.dll
#16 0x6c0d7c72 in pango_layout_move_cursor_visually () from /usr/bin/cygpango-1.0-0.dll
#17 0x6c0d8204 in pango_layout_get_size () from /usr/bin/cygpango-1.0-0.dll
#18 0x6b8bd65a in rsvg_state_reconstruct () from /usr/bin/cygrsvg-2-2.dll
#19 0x6b8bd569 in rsvg_state_reconstruct () from /usr/bin/cygrsvg-2-2.dll
#20 0x6b8bd936 in rsvg_state_reconstruct () from /usr/bin/cygrsvg-2-2.dll
#21 0x6b8b742c in rsvg_new_ellipse () from /usr/bin/cygrsvg-2-2.dll
#22 0x6b8b78ad in rsvg_new_ellipse () from /usr/bin/cygrsvg-2-2.dll
#23 0x6b8b8332 in rsvg_node_draw () from /usr/bin/cygrsvg-2-2.dll
#24 0x6b8c5834 in rsvg_handle_render_cairo_sub () from /usr/bin/cygrsvg-2-2.dll
#25 0x6b8c600f in rsvg_handle_get_pixbuf_sub () from /usr/bin/cygrsvg-2-2.dll
#26 0x6b8c60a7 in rsvg_handle_get_pixbuf () from /usr/bin/cygrsvg-2-2.dll
#27 0x6a5112e9 in ?? () from /usr/lib/gdk-pixbuf-2.0/2.10.0/loaders/cygpixbufloader-svg.dll
#28 0x6cb89918 in gdk_pixbuf_loader_close () from /usr/bin/cyggdk_pixbuf-2.0-0.dll
#29 0x6cb8620c in gdk_pixbuf_format_copy () from /usr/bin/cyggdk_pixbuf-2.0-0.dll
#30 0x6cb871cb in gdk_pixbuf_new_from_stream_at_scale () from /usr/bin/cyggdk_pixbuf-2.0-0.dll
#31 0x6bbae43d in gtk_icon_info_free () from /usr/bin/cyggtk-x11-2.0-0.dll
#32 0x6bbb169c in gtk_icon_info_load_icon () from /usr/bin/cyggtk-x11-2.0-0.dll
#33 0x00401eee in ?? ()
#34 0x004023ce in ?? ()
#35 0x0040249f in ?? ()
#36 0x004025fb in ?? ()
#37 0x00403bf3 in ?? ()
#38 0x61007a27 in cygwin_exit_return () from /usr/bin/cygwin1.dll
#39 0x00000001 in ?? ()
#40 0x0068cc6c in ?? ()
#41 0x610056c2 in _cygtls::call2(unsigned long (*)(void*, void*), void*, void*) () from /usr/bin/cygwin1.dll
(gdb)

It seems a problem with fontconfig. Any hint?

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