1.7.15-1: mintty bash failing to run .NET executables ?

Pawel Jasinski pawel.jasinski@gmail.com
Tue May 22 06:22:00 GMT 2012


roll back your cygwin.dll to 1.7.14-2


On Tue, May 22, 2012 at 8:13 AM, John Costella <john.costella@gmail.com> wrote:
> Not a newbie exactly, but haven't posted a question to this list before.
> I've been running Cygwin on both Windows 7 Pro 64-bit SP1 for about eight
> months and a (virtualised) server running Win Server 2008 R2 Standard SP1
> for about two months, mainly as a "convenience shell" as corporate policy
> prevents me running native Linux machines. I'm using MonoDevelop to compile
> command-line C# programs into .NET executables (generally 4.0 by default,
> but have also tested the following with a "Hello, World!" compiled to 2.0).
> I believe MonoDevelop on Windows uses the standard Windows SDK and compiler.
> Today I happened to reboot the server for another reason, and then found
> that the standard output of the .NET executables was not appearing in the
> mintty bash terminal (although standard error was, and the programs were
> executing: visibly doing things in Task Manager, files being created,
> etc.).
> During investigation I wanted to get a utility from the Cygwin site, but hit
> Enter at the wrong time and ended up refreshing the installation to the
> latest (1.7.15-1).
> After that, .NET programs failed to launch at all. The mintty bash terminal
> just sits there, no CPU or anything else being used, the .NET .exe failing
> to launch according to Task Manager. (Have left it 10 or 15 minutes to make
> sure.) Ctrl-C / Ctrl-Break, Ctrl-Z fail to have any effect. Clicking the
> close 'X' on the window housing the mintty terminal just kills it
> (mintty.exe and bash.exe) immediately (as seen in Task Manager) without
> comment or question from Windows.
> I've tried reinstalling Cygwin on the server, then deleting c:\cygwin and
> reinstalling from scratch (rebooting each time in between for good measure),
> and have been unable to get .NET executables to run.
> Unfortunately, during my investigations, I also updated my laptop Cygwin to
> 1.7.15-1 as well (although I didn't uninstall or delete it). I've just
> discovered that it, too, is hanging if I try to launch any .NET exe.
> Running a "normal" .exe (e.g. things like explorer.exe from the Windows
> directory, or just typing 'explorer') works fine, and launches the
> applicable Windows program. I'm guessing that normal executables (e.g.
> created directly by gcc) are fine, and it's only those pulling in the .NET
> CLR that are failing.
> Both machines have all available Windows updates on them.
> I've never hit this sort of problem before with Cygwin, and am absolutely
> perplexed as to what is causing it. The fact that it's happened on two
> different machines (with different Windows versions), one with only a Cygwin
> update from setup.exe and the other with a "scorched earth" clean install,
> makes me tend to think that I might not be doing something absolutely stupid
> (which was my default assumption).
> Fortunately I can run the .NET executables directly from a Windows command
> prompt (cmd.exe) on either machine, but the loss of the Cygwin "convenience
> shell" (and the many shell scripts I use in it) is somewhat painful.
> I'm attaching the output from cygcheck for both machines, but have had to
> sanitise a fair bit of corporate information (usernames, servers, domains,
> etc.) and have replaced in each case with the string "!sanitised!".
> Also, if it's at all possible to "rollback" to previous version of Cygwin,
> that would be a great help. (I see 1.5 on the site but that might be a bit
> too far back unless I get desperate.)
> Thanks in advance.
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