bug#35409: 27.0.50; Emacs master can't be built in Win 10

[Eli Zaretskii]

> From: Shuguang Sun <shuguang79@qq.com>
> Cc: 35409@debbugs.gnu.org
> Date: Wed, 24 Apr 2019 23:20:48 +0800
> 
> Thread 1 received signal SIGSEGV, Segmentation fault.
> 0x00007ff9131b40ab in ntdll!RtlUnwindEx () from C:\WINDOWS\SYSTEM32\ntdll.dll
> (gdb) thread 1
> [Switching to thread 1 (Thread 17908.0x8e7c)]
> #0  0x00007ff9131b40ab in ntdll!RtlUnwindEx ()
>    from C:\WINDOWS\SYSTEM32\ntdll.dll
> (gdb) backtrace
> #0  0x00007ff9131b40ab in ntdll!RtlUnwindEx ()
>    from C:\WINDOWS\SYSTEM32\ntdll.dll
> #1  0x00007ff910751f4a in msvcrt!_setjmpex ()
>    from C:\WINDOWS\System32\msvcrt.dll
> #2  0x00000004001ee4c6 in unwind_to_catch (catch=catch@entry=0x2f34110,
>     type=type@entry=NONLOCAL_EXIT_SIGNAL, value=value@entry=0x3bb6cd3)
>     at eval.c:1169

Thanks, can you also show the results of xbacktrace?

Also, when did you build the master branch before this time?