Sorry to disappoint you :) , but the HP C/C++ compiler (for
Itanium-based systems) allows you to control the behavior of NULL
pointer dereferences. Although out-of-topic for gcc, if you set the -Z
option, a NULL pointer dereference returns 0, while it returns a
"SIGSEGV" if you set -z.
This is probably the -Z option which gkarthi29 mentioned ... But, once
again, this is NOT gcc, and it is also NOT Linux!
Philip Herron wrote:
> gkarthi29 wrote:
>> Hi
>>
>> Compiling the following program
>> #include <stdio.h>
>> int main()
>> {
>> char **variable=NULL;
>>
>> printf("Starting\n");
>> fflush(stdout);
>> while(*variable)
>> {
>> printf("Inside while\n");
>> fflush(stdout);
>> break;
>> }
>> printf("Ending\n");
>> fflush(stdout);
>> }
>>
>> Produces the output
>> Starting
>> Segmentation fault
>>
>>
> Hey
>
> I have to agree with everyone else here, why would you de-referenced a
> null pointer to something which is un-defined. And then act on
> something which is un-defined. Maby you could do *variable =
> something; then do what you want. It isn't anything to do with the
> compiler.
>
> If i had a compiler that let me run such a program i would be worried.
>
> --Phil
>
