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libharfbuzz0 1.7.6-1 update causing xwin-xdg-menu.exe to crash
- From: Gilles Detillieux <grdetil at scrc dot umanitoba dot ca>
- To: cygwin at cygwin dot com
- Date: Thu, 19 Apr 2018 16:15:15 -0500
- Subject: libharfbuzz0 1.7.6-1 update causing xwin-xdg-menu.exe to crash
Has anybody else run into this problem? I've done two installations of
Cygwin/X on Windows 10 systems this week, and they both had problems
with the XWin Server dying just a few seconds after starting up. I
traced the problem back to xwin-xdg-menu.exe getting a Segmentation
fault, which then causes XWin Server to exit. I hacked an alternate
.startxwinrc file to prevent XWin Server from dying (it ends with a
"sleep infinity"), so I could debug it further.
With the XWin Server running reliably, I then ran "strace
xwin-xdg-menu.exe" and saw that it got a segmentation fault just after
reading a TTF font from the Windows Font directory (bahnschrift.ttf if
it matters). I noticed there were two recent library updates related to
font handling, so I tried back out to the previous version for each. It
turns out that when I reverted to version 1.7.4-1 of libharfbuzz0,
xwin-xdg-menu.exe stopped crashing.
If it matters, both these systems are the Fall Creator's Update (1709)
of Windows 10 64-bit, and I'm running the 32-bit version of Cygwin.
Hopefully someone can track down and fix this recent bug!
Gilles R. Detillieux E-mail: <email@example.com>
Spinal Cord Research Centre WWW: http://www.scrc.umanitoba.ca/
Dept. of Physiology and Pathophysiology, Rady Faculty of Health Sciences,
Univ. of Manitoba Winnipeg, MB R3E 0J9 (Canada)
Problem reports: http://cygwin.com/problems.html
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