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Hi Ben, On Apr 27 19:12, Ben RUBSON wrote: > 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 ! Even with Bill's additionl info I have no idea what change in the above time frame might be the culprit, especially since no change has been made to stack handling. I suggest to build your own Cygwin and bisect it. Also, you may want to run your stuff under GDB and set breakpoints to, e.g., Cygwin's exception::handle method. Make sure the cygwin1.dbg file can be found by GDB. HTH, Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat
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