Hi there, I have a strange problem for which I could not find any help online or in the Cygwin FAQs (have been searching for about a month now). I have Cygwin64 on Windows 7 (downloaded maybe about 8 months ago).
I have a bash script that, in addition to running Cygwin programs, runs a few native Windows executables (e.g. powershell.exe, windows python.exe, some C++ binary that I've compiled for Windows [not cygwin], etc.). This works fine normally, except in random instances (I'd say it happens maybe one out of every 30 runs), I observe the following: 1) The Cygwin bash script runs the native executable 2) The executable is properly located by bash and begins to run (i.e., I can see output from the native windows program) 3) The native windows program successfully completes and exits with code 0 internally 4) But -- the error code returned to the bash script is 127 -- despite no indication of an error anywhere Here's an example: #!/bin/bash # Run windows binary # program is properly located and runs to completion with no errors ./nativeWindowsProgram.exe echo $? # maybe 1 out of 30 times this returns 127 127 This only happens with native binaries, including with one of my own compiled (from C++) native windows .exe files in which I know for certain that it is returning a zero error code. So in other words, the bash script, despite having located and run the native windows exe successfully, is still handed an error code of 127. I realize that 127 usually means "Command not found" but that is not the case here, because the native program always runs, and always runs successfully (I verified this). This happens randomly -- today I run the script a few times and it's fine, then tomorrow I run it a few times (unchanged) and I observe this issue on one of those runs. Furthermore, it only happens when running the native windows binaries in the shell script (never happens for Cygwin programs). This is really mystifying me, I've searched all over but I can't find anything. Does anyone have any idea? I could always setup my bash script to ignore the 127 return code from invocations of native exes, but I'd prefer to get to the bottom of it. Any ideas? Thank you -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple