Cyg32 on Win64 fails with stack-protector

[Ben RUBSON]

Hi,

We are facing an issue with Cygwin 2.10 32 bits running on Windows 64 bits.

Issue was found running EncFS FUSE FS using WinFsp.

When forking, and calling StartServiceCtrlDispatcher, program fails with  
0xC0000028 / STATUS_BAD_STACK.

Testing several Cygwin versions reveals that issue was introduced between  
2017-11-14 and 2017-12-01.
And Bill (WinFsp author) found that compiling with -fno-stack-protector  
works around the issue.

There you can then find the full story and Bill's nice investigation :
https://github.com/billziss-gh/winfsp/issues/161

Could it be possible something went wrong with Cygwin ?

Thank you very much for your support !

Best regards,

Ben