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From:	"Steve Baldwin" <stbaldwin AT multiservice DOT com>
To:	<cygwin AT cygwin DOT com>
Subject:	Accessing global variables causes segfault
Date:	Sat, 22 Feb 2003 16:21:33 +1100
Message-ID:	<000701c2da32$4472f640$3264a8c0@AUSTBMOBILE>
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I'm having some (further) issues porting some Unix code to cygwin.  I
have a
scenario where there are global variables defined in a shared library,
and referenced in the executable.  See the example below.  Yes I know
it's bad coding practice, but I'm hoping to port the code with the least
amount of re-writing as possible.  It works fine under Unix, but as you
can see from below, doesn't play well under cygwin.  Is there anything
I can do - apart from the obvious re-write.

Cheers,

Steve

[cdev]$ cat a.c
#include <stdio.h>
#include <stdlib.h>
extern void fx (void) ;
extern int myglobal ;

int
main (int argc, char **argv) {
        myglobal = 99 ;
        fx () ;
}
[cdev]$ cat b.c
#include <stdio.h>

int             *myglobal ;

void
fx (void)
{
        printf("here i am : myglobal = %d\n", myglobal) ;
}
[cdev]$ gcc b.c -o libb.dll -shared
[cdev]$ gcc a.c -o a -L. -lb
[cdev]$ a
Segmentation fault (core dumped)


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