[MacPorts] #67783: ghemical @3.0.0: segmentation fault on launch

[MacPorts]

#67783: ghemical @3.0.0: segmentation fault on launch
------------------------+----------------------
 Reporter:  ryandesign  |      Owner:  (none)
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.8.1
 Keywords:  monterey    |       Port:  ghemical
------------------------+----------------------
 ghemical @3.0.0 crashes immediately on launch for me on macOS Monterey:

 {{{
 Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
 0   ???                                                0x0 ???
 1   libpango-1.0.0.dylib                       0x1047d7f7c
 pango_font_get_hb_font + 77
 2   libpango-1.0.0.dylib                       0x1047f46a5
 pango_shape_internal + 307
 3   libpango-1.0.0.dylib                       0x1047f4529 pango_shape +
 35
 4   libpangox-1.0.0.dylib                      0x103facd05
 itemize_string_foreach + 312
 5   libpangox-1.0.0.dylib                      0x103fac911
 pango_x_font_get_metrics + 148
 6   ghemical                                   0x103c921f4
 pangofont_wcl::ogl_InitPangoFont(char const*) + 252
 7   ghemical                                   0x103c94253
 oglview_wcl::InitGL() + 295
 8   liboglappth.2.dylib                        0x1041e0c3f
 base_wcl::LinkWnd(base_wnd*) + 131
 9   ghemical                                   0x103c7caab
 project::AddGraphicsClient(custom_camera*, bool) + 455
 10  ghemical                                   0x103cb184e
 gtk_project::DoSafeStart() + 18
 11  ghemical                                   0x103cae460
 gtk_app::gtk_app() + 1828
 12  ghemical                                   0x103caf264
 gtk_app::GetAppX() + 66
 13  ghemical                                   0x103cb44a4 main + 364
 14  dyld                                       0x10cbf652e start + 462
 }}}

 We haven't been able to build ghemical for years because it depends on
 gtkglext which depends on pangox-compat which did not build with current
 pango (#64228) until I fixed it today by adapting patches used by other
 package managers. However, the ghemical crash within a pango function
 called from a pangox-compat function suggests our patched pangox-compat
 may not be fully functional. Or it could indicate a problem with the way
 ghemical is calling pangox-compat, or an incompatibility between ghemical,
 which is old, and our pango port, which has been updated many times since
 ghemical was released.

 The backtrace looks similar to the one reported in
 [https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=996006 Debian bug
 996006]. There are some differences in the chain of functions called but
 they begin and end in the same place and the difference may be caused by
 differences in the pango or harfbuzz versions used. It's not clear to me
 what fixed their problem however. There is a reference there to
 [https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=958017 Debian bug
 958017] but that seems to have been caused by a mismatch of pango
 libraries due to the Debian practice of publishing the individual pango
 libraries in separate packages; that can't occur in MacPorts since all
 pango libraries are published in the single pango port.

 I am using harfbuzz-devel @7.3.0_0 while harfbuzz remains at @6.0.0_1. I
 haven't tested whether the problem is specific to this newer version of
 harfbuzz. We haven't updated harfbuzz to newer versions because of build
 failures on older versions of macOS.

 Both pangox-compat and gtkglext have been discontinued by their
 developers; they will not fix bugs or release new versions. ghemical would
 be wise to migrate away from these libraries.

 Unless the project has moved somewhere else, ghemical 3.0.0, released in
 2011, appears to be the latest version. The ghemical mailing lists
 received their latest posts in 2011. The ghemical homepage hasn't been
 updated since 2006 and says the latest version is 2.0.0. So this software
 may be long abandoned and we should remove it and its dependencies
 libghemical and liboglappth unless we can find a fix for this issue.

-- 
Ticket URL: <https://trac.macports.org/ticket/67783>
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