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Subject: Re: Running native exe from Cygwin in random instances reports incorrect error code 127
From: Warren Young <wyml AT etr-usa DOT com>
In-Reply-To: <CAGW0ud2ELnAAkx57A3LutxiAoBtv1Mm7ssfaut__JDJu5GUSkg@mail.gmail.com>
Date: Mon, 18 Jan 2016 12:50:39 -0700
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On Jan 18, 2016, at 8:27 AM, David Sicilia <dpsicilia AT gmail DOT com> wrote:
> 
>   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

We’ll want a simple test case showing the problem.  I can’t replicate it here.

That is to say, given hello.c:

    #include <stdio.h>

    int main(void)
    {
        printf("Hello, world!\n");
        return 0;
    }

…compiled via Visual Studio 2015’s cl, I can run it thousands of times successfully via runhello.sh:

    #!/bin/bash
    typeset -i i=0
    echo -n "0: "
    while ./hello
    do
        i=i+1
        echo -n "$i: "
    done
    echo “Error: $?"

If the same pair of programs work on your system, then the problem is not with *all* native .exes, as you claim, so you’d need to narrow down what your program is doing that actually causes the problem.

If this pair of programs *fails* on your system, then you’ve probably got a BLODA problem:

    https://cygwin.com/faq/faq.html#faq.using.bloda
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