[Bug 34930] Cygwin-compiled Hello World program couldn't display output

https://bugs.winehq.org/show_bug.cgi?id=34930

--- Comment #6 from Qian Hong  ---
According to relay log:

0023:Call KERNEL32.GetStdHandle(fffffff6) ret=610299bf
0023:Ret  KERNEL32.GetStdHandle() retval=00000017 ret=610299bf
...
0023:Call KERNEL32.GetFileType(0000001b) ret=610293bb
0023:Ret  KERNEL32.GetFileType() retval=00000002 ret=610293bb
0023:Call KERNEL32.GetConsoleScreenBufferInfo(0000001b,0061aa16) ret=610293f7
0023:trace:console:GetConsoleScreenBufferInfo (0x1b,(80,150) (0,0) 15
(0,0-79,24) (80,25)
0023:Ret  KERNEL32.GetConsoleScreenBufferInfo() retval=00000001 ret=610293f7
0023:Call KERNEL32.CloseHandle(0000001b) ret=61029853
0023:Ret  KERNEL32.CloseHandle() retval=00000001 ret=61029853

So STDOUT (STD_OUTPUT_HANDLE:fffffff6 =>0000001b) is closed here.

I'm looking into the below cygwin code:

winsup/cygwin/dtable.cc:

dtable::init_std_file_from_handle:

311   else if (GetConsoleScreenBufferInfo (handle, &buf)
 312            || GetNumberOfConsoleInputEvents (handle, (DWORD *) &buf))
 313     {
 314       /* Console I/O */
 315       if (myself->ctty > 0)
 316         dev.parse (myself->ctty);
 317       else
 318         {
 319           dev.parse (FH_CONSOLE);
 320           CloseHandle (handle);
 321           handle = INVALID_HANDLE_VALUE;
 322         }
 323     }

Not sure why ctty is not positive here.