diff options
| -rw-r--r-- | winsup/cygwin/timerfd.cc | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/winsup/cygwin/timerfd.cc b/winsup/cygwin/timerfd.cc index b0d4db9de..8e4c94e66 100644 --- a/winsup/cygwin/timerfd.cc +++ b/winsup/cygwin/timerfd.cc @@ -32,6 +32,15 @@ timerfd_tracker::create_timechange_window () wclass.lpfnWndProc = DefWindowProcW; wclass.hInstance = user_data->hmodule; wclass.lpszClassName = cname; + /* This sleep is required on Windows 10 64 bit only, and only when running + under strace. One of the child processes inheriting the timerfd + descriptor will get a STATUS_FLOAT_INEXACT_RESULT exception inside of + msvcrt.dll. While this is completely crazy in itself, it's apparently + some timing problem. It occurs in 4 out of 5 runs under strace only. + The sleep is required before calling RegisterClassW. Moving it before + CreateWindowExW does not work. What the heck? */ + if (being_debugged ()) + Sleep (1L); atom = RegisterClassW (&wclass); if (!atom) debug_printf ("RegisterClass %E"); |