OK, I think I've solved this by creating export/import libraries.
Thanks
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Steve Baldwin
Sent: Saturday, 22 February 2003 4:22 PM
To: [EMAIL PROTECTED]
Subject: Accessing global variables causes segfault
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)
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Bug reporting: http://cygwin.com/bugs.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Bug reporting: http://cygwin.com/bugs.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/
