Helge Bahmann wrote:
On Linux there you can have the zero page mapped by running your program
through the following wrapper:
---
#include <linux/personality.h>
#include <unistd.h>
main()
{
personality(MMAP_PAGE_ZERO);
char *cmd[]={"/path/to/your/broken/app", 0};
execv(cmd[0], cmd);
}
---
This will get you a single page mapped at address zero (depending on the
brokenness of your app this may not be enough and you have to map more
than that manually).
I hope to not further trouble the waters of what is clearly a "don't do
that, because it has no meaning" transgression of the (C) language
definition, but isn't this a VMSious problem ?
I.e., getting 0 if you dereference a NULL pointer ?
It's been 20 years (5.4ish) since I last used VMS, but this is what came
up to my mind when I saw this question ...
Cheers,
--
Toon Moene - e-mail: toon@xxxxxxxxx - phone: +31 346 214290
Saturnushof 14, 3738 XG Maartensdijk, The Netherlands
At home: http://moene.org/~toon/
Progress of GNU Fortran: http://gcc.gnu.org/gcc-4.5/changes.html
